Spherical Polybutylene Terephtalate (PBT)-Polycarbonate (PC) Blend Particles by Mechanical Alloying and Thermal Rounding

Dechet M, Gomez Bonilla JS, Lanzl L, Drummer D, Bück A, Schmidt J, Peukert W (2018)

Publication Language: English

Publication Type: Journal article, Original article

Publication year: 2018

Journal

Polymers MDPI

Book Volume: 10

Article Number: 1373

Journal Issue: 12

DOI: 10.3390/polym10121373

Abstract

In this study, the feasibility of co-grinding and the subsequent thermal rounding to produce spherical polymer blend particles for selective laser sintering (SLS) is demonstrated for polybutylene terephthalate (PBT) and polycarbonate (PC). The polymers are jointly comminuted in a planetary ball mill, and the obtained product particles are rounded in a heated downer reactor. The size distribution of PBT-PC composite particles is characterized with laser diffraction particle sizing, while the shape and morphology are investigated via scanning electron microscopy (SEM). A thorough investigation and characterization of the polymer intermixing in single particles is achieved via staining techniques and Raman microscopy. Furthermore, polarized light microscopy on thin film cuts enables the visualization of polymer mixing inside the particles. Trans-esterification between PBT and PC during the process steps is investigated via vibrational spectroscopy and differential scanning calorimetry (DSC). In this way, a new process route for the production of novel polymer blend particle systems for SLS is developed and carefully analyzed.

Authors with CRIS profile

Maximilian Dechet Sonderforschungsbereich 814/3 Additive Fertigung Juan Sebastian Gomez Bonilla Sonderforschungsbereich 814/3 Additive Fertigung Lydia Lanzl Sonderforschungsbereich 814/3 Additive Fertigung Dietmar Drummer Lehrstuhl für Kunststofftechnik Andreas Bück Professur für Partikeltechnik Jochen Schmidt Sonderforschungsbereich 814/3 Additive Fertigung Wolfgang Peukert Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik

How to cite

APA:

Dechet, M., Gomez Bonilla, J.S., Lanzl, L., Drummer, D., Bück, A., Schmidt, J., & Peukert, W. (2018). Spherical Polybutylene Terephtalate (PBT)-Polycarbonate (PC) Blend Particles by Mechanical Alloying and Thermal Rounding. Polymers, 10(12). https://dx.doi.org/10.3390/polym10121373

MLA:

Dechet, Maximilian, et al. "Spherical Polybutylene Terephtalate (PBT)-Polycarbonate (PC) Blend Particles by Mechanical Alloying and Thermal Rounding." Polymers 10.12 (2018).

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