% Encoding: UTF-8
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@COMMENT{For any questions please write to cris-support@fau.de}
@incollection{faucris.215857858,
author = {Munawar, Muhammad and Schubert, Dirk W. and Khan, Shahzad Maqsood and Gull, Nafisa and Islam, Atif and Ur Rehman, Muhammad Atiq and Voigt, Monika},
booktitle = {Polyester - Production, Characterization and Innovative Applications},
doi = {10.5772/intechopen.73476},
faupublication = {yes},
peerreviewed = {unknown},
title = {{A} {Case} {Study}: {Particulate}-{Filled} {Polyester} {Hybrid} {Laminated} {Composites},},
year = {2018}
}
@article{faucris.106139484,
abstract = {Bioactive and antibacterial coatings on stainless steel substrates were developed and characterized in this study. Silver nanocluster–silica composite coatings of 60–150 nm thickness were deposited using radio frequency (RF) co-sputtering on PEEK/bioactive glass (BG) layers (of 80–90 μm thickness) which had been electrophoretically deposited onto stainless steel. Two sputtering conditions were used by varying the deposition time (15 and 40 min); the resulting microstructure, composition, adhesion strength, in vitro bioactivity, and antibacterial activity were investigated. Scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and energy dispersive spectroscopy (EDX) confirmed the presence of silver nanoclusters, which were homogeneously embedded in the silica matrix. The isoelectric point of the coatings and their charge at physiological pH were determined by zeta potential measurements. The presence of BG particles in the PEEK/BG layer allows the coatings to form apatite-like crystals upon immersion in simulated body fluid (SBF). Moreover, silver nanoclusters embedded in the silica matrix as a top layer provided an antibacterial effect against Escherichia coli and Staphylococcus carnosus.},
author = {Ur Rehman, Muhammad Atiq and Ferraris, Sara and Goldmann, Wolfgang H and Perero, Sergio and Bastan, Fatih Erdem and Nawaz, Qaisar and Confiengo, G. Gautier di and Ferraris, Monica and Boccaccini, Aldo R.},
doi = {10.1021/acsami.7b08646},
faupublication = {yes},
journal = {ACS Applied Materials and Interfaces},
keywords = {antibacterial coatings; bioactive coatings; bioactive glass; electrophoretic deposition; PEEK; RF sputtering; silver},
pages = {32489-32497},
peerreviewed = {unknown},
title = {{Antibacterial} and {Bioactive} {Coatings} {Based} on {Radio} {Frequency} {Co}-{Sputtering} of {Silver} {Nanocluster}-{Silica} {Coatings} on {PEEK}/{Bioactive} {Glass} {Layers} {Obtained} by {Electrophoretic} {Deposition}},
volume = {9},
year = {2017}
}
@article{faucris.217471321,
abstract = {We investigated the bioactivity and cytocompatibility of 45S5 bioactive glass (BG) based scaffolds coated with a composite layer formed by gelatin and manganese doped mesoporous bioactive glass nanoparticles (Mn-MBGNs). The scaffolds were prepared using the foam replica method, and they were further coated with Mn-MBGNs/gelatin via dip coating. The synthesized scaffolds were characterized in relation to morphology, porosity, mechanical stability, bioactivity and cell biology behavior using osteoblast-like (MG-63) cells. The scaffolds were highly porous with interconnected porosity, and a suitable pore structure was maintained even after the Mn-MBGNs/gelatin coating. Energy-dispersive X-ray spectroscopy (EDX) confirmed the presence of Mn-MBGNs in the coatings. Moreover, the presence of gelatin was confirmed by Fourier transform infrared spectroscopy (FTIR). The coated scaffolds exhibited in-vitro bioactivity in simulated body fluid comparable to that of uncoated BG scaffolds. Finally, Mn-MBGNs/gelatin coated scaffolds were shown to be non-cytotoxic to MG-63 cells. Hence, the results presented here confirm that the novel Mn containing scaffolds can be considered in the field of biologically active ion releasing scaffolds for bone tissue engineering applications.},
author = {Nawaz, Qaisar and Ur Rehman, Muhammad Atiq and Roether, Judith and Yufei, Liu and Grünewald, Alina and Detsch, Rainer and Boccaccini, Aldo R.},
doi = {10.1016/j.ceramint.2019.04.179},
faupublication = {yes},
journal = {Ceramics International},
keywords = {Bioactive glasses; Bone tissue engineering; Gelatin; Manganese; Mesoporous bioactive glass nanoparticles; Scaffolds},
note = {CRIS-Team Scopus Importer:2019-05-14},
peerreviewed = {Yes},
title = {{Bioactive} glass based scaffolds incorporating gelatin/manganese doped mesoporous bioactive glass nanoparticle coating},
year = {2019}
}
@article{faucris.214175016,
abstract = {We investigated the suitability of 3D printed calcium phosphate scaffolds as drug carriers. The 3D powder printing process utilized a-tricalcium phosphate (alpha-TCP) as a solid phase and deionized water with 2.5% disodium hydrogen phosphate as a setting accelerator. The antibiotic gentamicin sulfate was incorporated by mixing it into alpha-TCP powder before printing. Two different concentrations of gentamicin (3 wt%, 7 wt%) were used to study the correlation between drug release kinetics and gentamicin content in the scaffolds. The scaffolds were hardened at 100% humidity. The synthesized scaffolds were characterized in terms of morphology, composition, mechanical strength, in vitro bioactivity and drug release kinetics. X-ray diffraction (XRD) analysis revealed that the alpha-TCP converted into calcium deficient hydroxyapatite (CDHA) during the printing process. Scanning electron microscopy (SEM) showed the typical needle-like structure of CDHA. Gentamicin release was investigated for a period of two weeks with an initial burst release. The produced scaffolds formed calcium enriched apatite crystals on their surface after three days of incubation in simulated body fluid.},
author = {Meissner, Ruth and Bertol, Liciane and Ur Rehman, Muhammad Atiq and Loureiro Dos Santos, Luis Alberto and Boccaccini, Aldo R.},
doi = {10.1016/j.ceramint.2018.12.212},
faupublication = {yes},
journal = {Ceramics International},
note = {CRIS-Team WoS Importer:2019-03-22},
pages = {7090-7094},
peerreviewed = {Yes},
title = {{Bioprinted} {3D} calcium phosphate scaffolds with gentamicin releasing capability},
volume = {45},
year = {2019}
}
@article{faucris.226139203,
abstract = {
Electrophoretic deposition (EPD) was used to produce
a multilayer coatings system based on chitosan/curcumin coatings on
poly-ether-ether-ketone (PEEK)/bioactive glass (BG)/hexagonal boron
nitride (h-BN) layers (previously deposited by EPD on 316L stainless
steel) to yield bioactive and antibacterial coatings intended for
orthopedic implants. Initially, PEEK/BG/h-BN coatings developed on 316L
stainless steel (SS) substrates were analyzed for wear studies. Then,
the EPD of chitosan/curcumin was optimized on 316L SS for suspension
stability, thickness, and homogeneity of the coatings. Subsequently, the
optimized EPD parameters were applied to produce chitosan/curcumin
coatings on the PEEK/BG/h-BN layers. The multilayered coatings produced
by EPD were characterized in terms of composition, microstructure, drug
release kinetics, antibacterial activity, and in vitro bioactivity.
Scanning electron microscopy (SEM) and Fourier transform infrared
spectroscopy (FTIR) confirmed the deposition of chitosan/curcumin on the
multilayer coating system. The release of curcumin upon immersion of
multilayer coatings in phosphate-buffered saline (PBS) was confirmed by
ultraviolet/visible (UV/VIS) spectroscopic analysis. The antibacterial
effect of chitosan/curcumin as the top coating was determined by
turbidity tests (optical density measurements). Moreover, the multilayer
coating system formed an apatite-like layer upon immersion in simulated
body fluid (SBF), which is similar in composition to the hydroxyapatite
component of bone, confirming the possibility of achieving close
bonding between bone and the coating surface.},
author = {Virk, Ranjot and Ur Rehman, Muhammad Atiq and Munawar, Muhammad and Schubert, Dirk W. and Goldmann, Wolfgang and Dusza, Ján and Boccaccini, Aldo R.},
doi = {10.3390/coatings9090572},
faupublication = {yes},
journal = {Coatings},
keywords = {curcumin; chitosan; bioactive coatings; electrophoretic deposition; antibacterial coatings},
peerreviewed = {Yes},
title = {{Curcumin}-{Containing} {Orthopedic} {Implant} {Coatings} {Deposited} on {Poly}-{Ether}-{Ether}-{Ketone}/{Bioactive} {Glass}/{Hexagonal} {Boron} {Nitride} {Layers} by {Electrophoretic} {Deposition}},
url = {https://www.mdpi.com/2079-6412/9/9/572},
year = {2019}
}
@article{faucris.200310592,
abstract = {
PEEK-hydroxyapatite (HA) coatings with feasible microstructure, adhesion strength, and in vitro bioactivity. Nanostructured hydroxyapatite (HA) micro-granules were incorporated with PEEK to form PEEK-hydroxyapatite composite coatings via EPD. After EPD, a heat-treatment at 375 ° C, which was applied for densification of the coatings and for enhancing the adhesion between the coatings and the substrates. It was found that both adhesion strength and in vitro bioactivity of the coatings were dependent on the PEEK and HA contents. Thus, increasing the amount of HA improved the bioactivity while decreasing the adhesion strength of the coatings. Apatite-like layer formation. High-quality content after incubation for three days in simulated body fluid (SBF). Finally, EPD of PEEK-hydroxyapatite composite system.
},
author = {Bastan, Fatih Erdem and Ur Rehman, Muhammad Atiq and Avcu, Yasemin Yildiran and Avcu, Egemen and Boccaccini, Aldo R.},
doi = {10.1016/j.colsurfb.2018.05.005},
faupublication = {yes},
journal = {Colloids and Surfaces B: Biointerfaces},
keywords = {Electrophoretic Deposition; EPD; Co-deposition; Composite Coating; Hydroxyapatite; PEEK},
peerreviewed = {unknown},
title = {{Electrophoretic} {Co}-deposition of {PEEK}-{Hydroxyapatite} {Composite} {Coatings} for {Biomedical} {Applications}},
url = {https://www.sciencedirect.com/science/article/pii/S0927776518302819},
year = {2018}
}
@phdthesis{faucris.207468951,
author = {Ur Rehman, Muhammad Atiq},
faupublication = {yes},
peerreviewed = {automatic},
school = {Friedrich-Alexander-Universität Erlangen-Nürnberg},
title = {{Electrophoretic} deposition ({EPD}) of bioactive (nano) structured composite coatings on metallic substrates and their corrosion, degradation, biological and wear resistance},
year = {2018}
}
@article{faucris.244319253,
abstract = {Electrophoretic deposition (EPD) is a powerful technique to assemble carbon nanotube (CNT) coatings and composite films with controlled architectures. This comprehensive review of the EPD of CNTs and CNT-containing composites focuses on achievements within the last 15 years and ongoing challenges. Stable CNT suspensions are a pre-requisite for successful EPD and have been prepared by a variety of strategies, discussed here. The resulting film microstructure is determined by the initial feedstock, the suspension, and the EPD approach applied, as well as a variety of EPD processing parameters. Nanocomposites can be prepared via co-deposition, sequential deposition, or post-deposition treatments, to introduce metallic, ceramic or polymeric phases. There are numerous potential applications for both homogeneous and patterned CNT films, including as structural reinforcements for composites, as field emission, energy storage and conversion devices, as well as in biomedical applications. The advantages and disadvantages of EPD processing in these contexts are discussed.},
author = {Ur Rehman, Muhammad Atiq and Chen, Qianq and Braem, Annabel and Shaffer, Milo S.P. and Boccaccini, Aldo R.},
doi = {10.1080/09506608.2020.1831299},
faupublication = {yes},
journal = {International Materials Reviews},
keywords = {Carbon nanotubes; coatings; electrophoretic deposition; nanocomposites; suspensions},
note = {CRIS-Team Scopus Importer:2020-10-23},
peerreviewed = {Yes},
title = {{Electrophoretic} deposition of carbon nanotubes: recent progress and remaining challenges},
year = {2020}
}
@article{faucris.218418755,
abstract = {Chitosan is one of the most widely used natural biopolymers for a great variety of biomedical applications owing to its biocompatibility, biodegradability, and antibacterial activity, being generally regarded as a safe material. It can be employed as a dispersant, binder, and surface charge agent for particles in suspension. Electrophoretic deposition (EPD) of chitosan, especially in combination with other materials, is receiving increasing attention for biomedical applications. This article presents a comprehensive review of the field of EPD of chitosan-based composite coatings by highlighting their microstructural, mechanical, surface, and biological properties. Since suspension characteristics have significant influences on the deposition mechanisms, kinetics, and on the overall properties of the electrophoretically deposited coatings, suspension parameters such as concentration, viscosity, and zeta potential are discussed, including chitosanbased suspensions with hydroxyapatite, bioactive glass particles, carbonaceous materials and other inorganic and organic materials. The deposition mechanisms proposed for each composite system are highlighted. Moreover, the effects of key EPD process parameters on the micro structural homogeneity, mechanical properties as well as surface and biological characteristics of the coatings are emphasised, and specific approaches for future research are proposed based on the state-of-the-art and considering EPD produced chitosan-based coatings in applications such as tissue engineering and drug delivery systems.},
author = {Avcu, Egemen and Bastan, Fatih Erdem and Abdullah, Hasan Zuhudi Bin and Ur Rehman, Muhammad Atiq and Avcu, Yasemin Yildiran and Boccaccini, Aldo R.},
doi = {10.1016/j.pmatsci.2019.01.001},
faupublication = {yes},
journal = {Progress in Materials Science},
note = {CRIS-Team WoS Importer:2019-05-24},
pages = {69-108},
peerreviewed = {Yes},
title = {{Electrophoretic} deposition of chitosan-based composite coatings for biomedical applications: {A} review},
volume = {103},
year = {2019}
}
@article{faucris.210649695,
author = {Ur Rehman, Muhammad Atiq and Munawar, Muhammad and Schubert, Dirk W. and Boccaccini, Aldo R.},
doi = {10.1016/j.surfcoat.2018.12.013},
faupublication = {yes},
journal = {Surface & Coatings Technology},
keywords = {Bioactive glass; Chitosan; Gelatin; Design of experiment; Electrophoretic deposition},
pages = {976-986},
peerreviewed = {Yes},
title = {{Electrophoretic} deposition of chitosan/gelatin/bioactive glass composite coatings on {316L} stainless steel: {A} design of experiment study},
volume = {358},
year = {2019}
}
@article{faucris.210338594,
abstract = {In this study, chitosan/bioactive glass (BG)/lawsone coatings were deposited by electrophoretic deposition (EPD) on polyetheretherketone (PEEK)/BG layers (previously deposited by EPD on 316-L stainless steel) to produce bioactive and antibacterial coatings. First, the EPD of chitosan/BG/lawsone was optimized on stainless steel in terms of suspension stability, homogeneity and thickness of coatings. Subsequently, the optimized EPD parameters were used to produce bioresorbable chitosan/bioactive glass (BG)/lawsone coatings on PEEK/BG layers. The produced layered coatings were characterized in terms of composition, microstructure, corrosion resistance, in vitro bioactivity, drug release kinetics and antibacterial activity. Ultraviolet/Visible (UV/VIS) spectroscopic analyses confirmed the release of lawsone from the coatings. Moreover, the deposition of chitosan/BG coatings was confirmed by Scanning Electron Microscopy (SEM) and Fourier Transform Infrared spectroscopy (FTIR). The coated specimens presented higher corrosion resistance (10 times) in comparison to that of bare 316-L stainless steel and showed convenient wettability for initial protein attachment. The presence of lawsone in the top layer provided antibacterial effects against Staphylococcus carnosus. Moreover, the developed coatings formed apatite-like crystals upon immersion in simulated body fluid, indicating the possibility of achieving close interaction between the coating surface and bone. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A: 3111-3122, 2018.},
author = {Ur Rehman, Muhammad Atiq and Bastan, Fatih Erdem and Nawaz, Qaisar and Goldmann, Wolfgang and Maqbool, Muhammad and Virtanen, Sannakaisa and Boccaccini, Aldo R.},
doi = {10.1002/jbm.a.36506},
faupublication = {yes},
journal = {Journal of Biomedical Materials Research Part A},
pages = {3111-3122},
peerreviewed = {Yes},
title = {{Electrophoretic} deposition of lawsone loaded bioactive glass ({BG})/chitosan composite on polyetheretherketone ({PEEK})/{BG} layers as antibacterial and bioactive coating.},
volume = {106},
year = {2018}
}
@article{faucris.107094944,
abstract = {
Composite layer based on chitosan containing silicate glass nanoparticles (SGN) and deposited by electrophoretic deposition (EPD) process on PEEK / bioactive glass (BG) layers (deposited by electrophoretic deposition on 316L stainless steel). Initially, the EPD process of chitosan / SGN / lawsone coatings was optimized on stainless steel in terms of suspension stability and coating characteristics. Subsequent, the optimized EPD parameters were used to produce chitosan / SGN / lawsone coatings on the PEEK / BG layers. The composite have been characterized in terms of composition, microstructure, and competitiveness in vitro bioactivity.The deposition of chitosan / SGN on PEEK / BG was confirmed qualitatively by Scanning Electron Microscopy (SEM) and Fourier Transform Infrared spectroscopy (FTIR). The multilayer coatings were relatively homogeneous having a coating thickness of 90-100 μm. Furthermore, multilayer coatings have been found to be useful in the SBF, which anticipates the bone bonding ability of the coatings.},
author = {Ur Rehman, Muhammad Atiq and Bastan, Fatih Erdem and Nawaz, Qaisar and Boccaccini, Aldo R.},
doi = {10.1149/08201.0045ecst},
faupublication = {yes},
journal = {ECS Transactions},
month = {Jan},
pages = {45-50},
peerreviewed = {Yes},
title = {{Electrophoretic} {Deposition} of {Lawsone} {Loaded} {Nanoscale} {Silicate} {Glass} /{Chitosan} {Composite} on {PEEK}/{BG} {Layers}},
url = {http://ecst.ecsdl.org/content/82/1/45.abstract},
volume = {82},
year = {2018}
}
@article{faucris.106145864,
abstract = {
This paper presents a study on the Design of Experiments (DoE) approach to optimize the electrophoretic deposition (EPD) process parameters for PEEK base coatings. PEEK and bioactive glass (45S5 BG) particles were suspended in ethanol and suspensions were stabilized with the help of citric acid. Electric field related parameters were optimized by using Taguchi DoE; an orthogonal array of L15 type with mixed levels of the control factors. Statistical tools were employed to identify the significant factors affecting deposition rate and to quantify the reproducibility of the constant voltage EPD process. It was demonstrated that both deposition voltage and time significantly influence deposition rate. Moreover, statistical confidence was elucidated by Defect Per Million Opportunities (DPMO) model, as proposed in six sigma tools. A pronounced deposition rate was obtained at 100 V/cm in comparison to 110 V/cm, although the adhesion strength and microstructural homogeneity were lower for 100 V/cm. The optimal suspension composition and EPD conditions predicted by DoE were further verified by experiments and qualitative agreement was found between the predicted and experimental data. The experimental results and statistical analyses are discussed based on current knowledge of the EPD of ceramic materials and their co-deposition with polymeric particles.},
author = {Ur Rehman, Muhammad Atiq and Bastan, Fatih Erdem and Haider, Bilal and Boccaccini, Aldo R.},
doi = {10.1016/j.matdes.2017.05.045},
faupublication = {yes},
journal = {Materials & Design},
keywords = {Electrophoretic deposition; Design of Experiment; PEEK; Bioactive glass},
pages = {223 - 230},
peerreviewed = {unknown},
title = {{Electrophoretic} deposition of {PEEK}/bioactive glass composite coatings for orthopedic implants: {A} design of experiments ({DoE}) study},
volume = {130},
year = {2017}
}
@article{faucris.216899786,
abstract = {Anodic nanoporous titanium dioxide (ATO) layers were synthesized via a three-step anodization process in a solution based on ethylene glycol containing fluoride ions and water. The as-prepared samples were annealed at 400 degrees C in order to transform amorphous oxide into the anatase phase. The anatase samples were coated with a chitosan-hydroxyapatite composite by using electrophoretic deposition (EPD) technique. A design of experiments (DoE) approach with Taguchi methodology was used in order to optimize the EPD parameters (voltage, time, and concentration of hydroxyapatite). A model describing the relationship between the mass of chitosan-hydroxyapatite composite coating and EPD parameters was proposed. The suggested model allows to estimate the mass (yield) of the coating based on the applied voltage, deposition time, and concentration of hydroxyapatite. It was shown that the concentration of hydroxyapatite in the suspension has the most significant impact on the morphology of the deposited coating. The coatings were characterized by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), contact angle and surface roughness measurements. The presence of chitosan-hydroxyapatite composite coatings increased the surface roughness of coated samples compared to the bare ATO layers. The morphology, compositional analysis, and crystalline phases of the EPD coatings confirmed that the anodic TiO2 samples were successfully coated with a chitosan-hydroxyapatite composite to achieve a more suitable bone-contacting surface. (C) 2019 Elsevier Ltd. All rights reserved.},
author = {Pawlik, Anna and Ur Rehman, Muhammad Atiq and Nawaz, Qaisar and Bastan, Fatih Erdem and Sulka, Grzegorz D. and Boccaccini, Aldo R.},
doi = {10.1016/j.electacta.2019.03.195},
faupublication = {yes},
journal = {Electrochimica Acta},
note = {CRIS-Team WoS Importer:2019-05-03},
pages = {465-473},
peerreviewed = {Yes},
title = {{Fabrication} and characterization of electrophoretically deposited chitosan-hydroxyapatite composite coatings on anodic titanium dioxide layers},
volume = {307},
year = {2019}
}
@article{faucris.210340044,
abstract = {The design of biomimetic biomaterials for cell culture has become a great tool to study and understand cell behavior, tissue degradation, and lesion. Topographical and morphological features play an important role in modulating cell behavior. In this study, a dual methodology was evaluated to generate novel gelatin methacrylate (GelMA)-based scaffolds with nano and micro topographical and morphological features. First, electrospinning parameters and crosslinking processes were optimized to obtain electrospun nanofibrous scaffolds. GelMA mats were characterized by SEM, FTIR, DSC, TGA, contact angle, and water uptake. Various nanofibrous GelMA mats with defect-free fibers and stability in aqueous media were obtained. Then, micropatterned molds produced by photolithography were used as collectors in the electrospinning process. Thus, biocompatible GelMA nanofibrous scaffolds with micro-patterns that mimic extracellular matrix were obtained successfully by combining two micro/nanofabrication techniques, electrospinning, and micromolding. Taking into account the cell viability results, the methodology used in this study could be considered a valuable tool to develop patterned GelMA based nanofibrous scaffolds for cell culture and tissue engineering.},
author = {Aldana, Ana Agustina and Malatto, Laura and Ur Rehman, Muhammad Atiq and Boccaccini, Aldo R. and Abraham, Gustavo Abel},
doi = {10.3390/nano9010120},
faupublication = {yes},
journal = {Nanomaterials},
month = {Jan},
peerreviewed = {unknown},
title = {{Fabrication} of {Gelatin} {Methacrylate} ({GelMA}) {Scaffolds} with {Nano}- and {Micro}-{Topographical} and {Morphological} {Features}.},
volume = {9},
year = {2019}
}
@article{faucris.240980128,
abstract = {Innovative asymmetric polyethersulfone (PES) membranes embedded with activated carbon (AC) were synthesized and then surface coated with thin PDMS layer. The membranes were then tested with advanced analytical techniques like FTIR, TGA, SEM and EDX analysis. Thereafter, the membranes were tested for gas permeation analysis with following five gases: carbon dioxide, hydrogen, nitrogen, helium and methane. The effects of embedding AC and feed gas pressure on gas permeation properties were also examined. The permeance of all the gases improved with the embedding of AC in the membrane without much decreasing their ideal selectivity while PDMS coating enhanced the ideal selectivity at the expense of decreasing permeance of all the gases. It was found that 30 wt. % AC embedded PDMS coated PES membrane, having thickness of 80 μm, exhibited the best gas permeation properties for following five pair of gases CO2/N2, CO2/CH4, H2/N2, He/N2 and He/CH4 at 25 °C and 20 bar. The best performing membrane was also tested for long term stability by exposing it with each gas for 96 h. It was also found that the performance of 30 wt % AC embedded membrane, surpassed the 2008 Robeson trade off line for all pair of gases except for CO2/CH4 for which it nearly touched this line. Finally, PDMS coated membranes were also tested with CO2/CH4 (50:50) mixture at high pressure and found that mixed gas permeation properties are considerably lesser than pure gas permeation properties due to possibility of competitive sorption phenomenon between the gases.},
author = {Haider, Bilal and Dilshad, Muhammad Rizwan and Ur Rehman, Muhammad Atiq and Akram, Muhammad Sarfraz and Kaspereit, Malte},
doi = {10.1016/j.jngse.2020.103406},
faupublication = {yes},
journal = {Journal of Natural Gas Science and Engineering},
keywords = {Activated carbon; Gas separation membranes; PDMS coating; Polyethersulfone},
note = {CRIS-Team Scopus Importer:2020-07-31},
peerreviewed = {Yes},
title = {{Highly} permeable innovative {PDMS} coated polyethersulfone membranes embedded with activated carbon for gas separation},
volume = {81},
year = {2020}
}
@article{faucris.238586676,
abstract = {Novel asymmetric polyethersulfone membranes loaded with SAPO-34 particles were prepared using phase inversion technique and then surface coated with PDMS using spin coating method. The mixed matrix membranes were then characterized by FTIR, TGA, SEM-EDX and gas permeation analysis. Effect of SAPO-34 loading alongwith operating pressure was also analyzed on gas permeation properties of both coated and uncoated membranes. SAPO-34 loading resulted in improvement of permeability of all the gases without much decrease in CO2 ideal selectivity with respect to methane and nitrogen whereas PDMS coating resulted in improvement of ideal selectivity of CO2 at the expense of decrease of permeance of all the gases. It was found that PDMS coated PES membrane, loaded with 30 wt.% SAPO-34, having thickness of 45 µm, demonstrated high CO2 permeance of 641.77 GPU, CO2/CH4 ideal selectivity of 4.45 and CO2/N2 ideal selectivity of 12.45, respectively at 20 bar and 25 °C. It was found that the performance of this membrane crossed the Robeson upper bound limit 2008 for CO2/N2 separation whereas for CO2/CH4 separation it crossed the previous upper bound limit 1991. Finally, the performance of this membrane was also analyzed under mixed gas conditions for CO2/CH4 separation at high pressure.},
author = {Haider, Bilal and Dilshad, Muhammad Rizwan and Ur Rehman, Muhammad Atiq and Vargas Schmitz, Jürgen and Kaspereit, Malte},
doi = {10.1016/j.seppur.2020.116899},
faupublication = {yes},
journal = {Separation and Purification Technology},
keywords = {Asymmetric; Gas separation membranes; PDMS coating; Polyethersulfone; SAPO-34},
note = {CRIS-Team Scopus Importer:2020-05-22},
peerreviewed = {Yes},
title = {{Highly} permeable novel {PDMS} coated asymmetric polyethersulfone membranes loaded with {SAPO}-34 zeolite for carbon dioxide separation},
volume = {248},
year = {2020}
}
@article{faucris.215840258,
author = {Munawar, Muhammad and Schubert, Dirk W. and Khan, Shahzad Maqsood and Ur Rehman, Muhammad Atiq and Gull, Nafisa and Islam, Atif and Sabir, Aneela and Shafique, Muhammad and Haider, Bilal and Azam, Mudassar and Khan, Saba Urooge and Voigt, Monika},
doi = {10.1016/j.pnsc.2017.12.005},
faupublication = {yes},
journal = {Progress in Natural Science},
keywords = {Design of experiment; Titania; Hybrid composites; Polyester},
pages = {266-274},
peerreviewed = {Yes},
title = {{Investigation} of functional, physical, mechanical and thermal properties of {TiO2} embedded polyester hybrid composites: {A} design of experiment ({DoE}) study},
volume = {28},
year = {2018}
}
@article{faucris.120079784,
abstract = {
In this study, we deposit composite coatings based on polyether ether ketone (PEEK), bioactive glass (BG) and hexagonal boron nitride (h-BN) particles via electrophoretic deposition (EPD) on stainless steel (SS316-L). The compounds have been characterized in terms of morphology, composition, adhesion strength, and compatibility in vitro bioactivity. Scanning electron microscopy (SEM) showed the uniform dispersion of PEEK, BG and h-BN particles in the deposit. The coatings were sintered in a furnace at 375 ° C for 30 minutes. SEM analysis showed that PEEK is a uniform matrix embedded with BG and h-BN particles. Energy dispersive X-ray spectroscopy and Fourier transform infrared spectroscopy (FTIR) confirmed the presence of PEEK, BG and h-BN.The sintered coating shows appropriate adhesion to the substrate (qualitatively assessed). Moreover, the hydrophilicity for initial protein attachment. Finally, the coatings formed in a simulated body fluid, as confirmed by SEM and FTIR analysis.},
author = {Virk, Ranjot and Ur Rehman, Muhammad Atiq and Boccaccini, Aldo R.},
doi = {10.1149/08201.0089ecst},
faupublication = {yes},
journal = {ECS Transactions},
month = {Jan},
pages = {89-95},
peerreviewed = {Yes},
title = {{PEEK} {Based} {Biocompatible} {Coatings} {Incorporating} h-{BN} and {Bioactive} {Glass} by {Electrophoretic} {Deposition}},
url = {http://ecst.ecsdl.org/content/82/1/89.short},
volume = {82},
year = {2018}
}
@article{faucris.200310216,
abstract = {Mesoporous bioactive glass (BG) nanoparticles based in the system: SiO2–P2O5-CaO-MnO were synthesized via a modified Stöber process at various concentrations of Mn (0-7 mol%). The synthesized manganese-doped BG nanoparticles were characterized in terms of morphology, composition, in vitro bioactivity and antibacterial activity. Scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Brunauer-Emmett-Teller (BET) analysis confirmed that the particles had spherical morphology (mean particle size: 110 nm) with disordered mesoporous structure. Energy dispersive X-ray spectroscopy (EDX) confirmed the presence of Mn, Ca, Si and P in the synthesized Mn-doped BG particles. Moreover, X-ray diffraction (XRD) analysis has shown that Mn has been incorporated into the amorphous silica network (bioactive glass). More over, it was found that manganese-doped BG particles form apatite crystals upon being immersed in simulated body fluid (SBF). Inductively coupled plasma atomic emission spectroscopy (ICP-OES) measurements confirmed that Mn is released in a sustained manner
Bacillus subtilis ,
Pseudomonas aeruginosaaeruginosa Staphylococcus aureus . The multifunctional BG nanoparticles for bone tissue engineering. The results indicate that the incorporation of Mn into the bioactive glass network is effective. and
2−) in HA, strontium (Sr
2+) was co-substituted at the same concentration. Selenium and strontium-substituted hydroxyapatites (Se-Sr-HA) at equal molar ratios of x Se/(Se + P) and x Sr/(Sr + Ca) at (x = 0, 0.01, 0.03, 0.05, 0.1, and 0.2) were synthesized via the wet precipitation route and sintered at 900 °C. The effect of the two-ion concentration on morphology, surface charge, composition, antibacterial ability, and cell viability were studied. Xray diffraction verified the phase purity and confirmed the substitution of selenium and strontium ions. Acellular in vitro bioactivity tests revealed that Se-Sr-HA was highly bioactive compared to pure HA. Se-Sr-HA samples showed excellent antibacterial activity against both Gram-negative (Escherichia coli) and Gram-positive (Staphylococcus carnosus) bacterial strains. In vitro cell–material interaction, using human osteosarcoma cells MG-63 studied by WST-8 assay, showed that Se-HA has a cytotoxic effect; however, the co-substitution of strontium in Se-HA offsets the negative impact of selenium and enhanced the biological properties of HA. Hence, the prepared samples are a suitable choice for antibacterial coatings and bone filler applications.},
author = {Maqbool, Muhammad and Nawaz, Qaisar and Ur Rehman, Muhammad Atiq and Cresswell, Mark and Jackson, Phil and Hurle, Katrin and Detsch, Rainer and Goldmann, Wolfgang and Shah, Asma Tufail and Boccaccini, Aldo R.},
doi = {10.3390/ijms22084246},
faupublication = {yes},
journal = {International Journal of Molecular Sciences},
keywords = {Antibacterial; Co-substituted hydroxyapatite; Cytocompatibility; Selenium; Strontium},
note = {CRIS-Team Scopus Importer:2021-04-30},
peerreviewed = {Yes},
title = {{Synthesis}, characterization, antibacterial properties, and in vitro studies of selenium and strontium co-substituted hydroxyapatite},
volume = {22},
year = {2021}
}
@article{faucris.224993727,
abstract = {The coating of porous scaffolds with nanoparticles is crucial in many applications, for example to generate scaffolds for catalysis or to make scaffolds bioactive. A standard and well-established method for coating surfaces with charged nanoparticles is electrophoresis, but when used on porous scaffolds, this method often leads to a blockage of the pores so that only the outermost layers of the scaffolds are coated. In this study, the electrophoretic coating process is monitored in situ and the kinetics of nanoparticle deposition are investigated. This concept can be extended to design a periodic electrophoretic deposition (PEPD) strategy, thus avoiding the typical blockage of surface pores. In the present work we demonstrate successful and homogeneous electrophoretic deposition of hydroxyapatite nanoparticles (HAn, diameter ≤200 nm) on a fibrous graphitic 3D structure (ultralightweight aerographite) using the PEPD strategy. The microfilaments of the resulting scaffold are covered with HAn both internally and on the surface. Furthermore, protein adsorption assays and cell proliferation assays were carried out and revealed that the HAn-decorated aerographite scaffolds are biocompatible. The HAn decoration of the scaffolds also significantly increases the alkaline phosphatase activity of osteoblast cells, showing that the scaffolds are able to promote their osteoblastic activity.},
author = {Taale, Mohammadreza and Krüger, Diana and Ossei-Wusu, Emmanuel and Schütt, Fabian and Ur Rehman, Muhammad Atiq and Mishra, Yogendra Kumar and Marx, Janik and Stock, Norbert and Fiedler, Bodo and Boccaccini, Aldo R. and Willumeit-Römer, Regine and Adelung, Rainer and Selhuber-Unkel, Christine},
doi = {10.1021/acsbiomaterials.9b00102},
faupublication = {yes},
journal = {ACS Biomaterials Science and Engineering},
keywords = {3D scaffold; aerographite; electrophoretic deposition; hydroxyapatite; osteoblasts; tissue engineering},
note = {CRIS-Team Scopus Importer:2019-08-23},
peerreviewed = {Yes},
title = {{Systematically} designed periodic electrophoretic deposition for decorating {3D} carbon-based scaffolds with bioactive nanoparticles},
year = {2019}
}
@article{faucris.203113086,
author = {Avcu, Egemen and Yıldıran Avcu, Yasemin and Baştan, Fatih Erdem and Ur Rehman, Muhammad Atiq and Üstel, Fatih and Boccaccini, Aldo R.},
doi = {10.1016/j.porgcoat.2018.07.021},
faupublication = {yes},
journal = {Progress in Organic Coatings},
keywords = {Electrophoretic deposition; Grit blasting; Bioactive glass; Chitosan; Surface topography; Wettability},
pages = {362-373},
peerreviewed = {Yes},
title = {{Tailoring} the surface characteristics of electrophoretically deposited chitosan-based bioactive glass composite coatings on titanium implants via grit blasting},
volume = {123},
year = {2018}
}