Conductivity of poly(methyl methacrylate) composite films filled with ultra-high aspect ratio carbon fibers

Xu H, Qu M, Schubert DW (2019)


Publication Language: English

Publication Type: Journal article, Review article

Publication year: 2019

Journal

Book Volume: 181

Article Number: 107690

URI: https://www.sciencedirect.com/science/article/pii/S0266353818317019

DOI: 10.1016/j.compscitech.2019.107690

Abstract

In this study, the poly(methyl methacrylate) (PMMA)/carbon fibers (CFs) composite films with different CFs concentrations have been prepared using the solution casting technique. CFs were modified using aqua regia to reduce aggregations. The residual aspect ratios (ARs) of CFs in the composite films are 49, 105, 227, 312, 417, 527 and 616, respectively. Light microscopy and SEM were applied to investigate the morphology of the composite films. The resistance of the film with different ARs of CFs was measured (1) perpendicularly and (2) along the in-plane direction. Both percolation thresholds ϕc,⊥ and ϕc,∥ were determined by fitting the Mclachlan GEM equation. The conductivity in both directions was presented in contour plot versus ARs of CFs and concentration of CFs. A huge amount of experimental data was obtained in this study, seven aspect ratio (AR) of CFs multiply 12 vol fraction of CFs with two measuring directions. Based on Balberg's excluded volume theory, for the first time the pre-factors K and K were revealed, considering different measuring direction on the film.

Authors with CRIS profile

How to cite

APA:

Xu, H., Qu, M., & Schubert, D.W. (2019). Conductivity of poly(methyl methacrylate) composite films filled with ultra-high aspect ratio carbon fibers. Composites Science and Technology, 181. https://dx.doi.org/10.1016/j.compscitech.2019.107690

MLA:

Xu, Huagen, Muchao Qu, and Dirk W. Schubert. "Conductivity of poly(methyl methacrylate) composite films filled with ultra-high aspect ratio carbon fibers." Composites Science and Technology 181 (2019).

BibTeX: Download