Copolymer of natural fibre reinforced polyester urethane: effect on physico-chemical properties through modification to interfacial adhesion

Author

Gabriela Jandikova1 / Pavel Kucharczyk1 / Norbert Miskolczi2 / Alena Pavelkova1 / Adriana Kovalcik3 / Vladimir Sedlarik1

1Centre of Polymer Systems, University Institute, Tomas Bata University in Zlín, tr. T. Bati 5678, 760 01 Zlín, Czech Republic

2Institute of Chemical Engineering and Process Engineering, Faculty of Engineering, MOL Department of Hydrocarbon and Coal Processing, University of Pannonia, H-8200, Veszprém, Egyetem u. 10, Hungary

3Institute of Chemistry and Technology of Materials, Graz University of Technology, Stremayrgasse 9, 8010 Graz, Austria

Corresponding author: Pavel Kucharczyk, Centre of Polymer Systems, University Institute, Tomas Bata University in Zlín, tr. T. Bati 5678, 760 01 Zlín, Czech Republic, e-mail:  (email)

Citation Information: Journal of Polymer Engineering. Volume 36, Issue 2, Pages 189–197, ISSN (Online) 2191-0340, ISSN (Print) 0334-6447, DOI: https://doi.org/10.1515/polyeng-2015-0077, July 2015

Publication History

Received:

2015-03-02

Accepted:

2015-05-31

Published Online:

2015-07-23

Abstract

This work is dedicated to polyester urethane (PEU)-based biocomposites, with special focus placed on techniques for compatibilisation to heighten interfacial adhesion between the PEU matrix and flax fibres. Tests were conducted on the effects of modification so as to increase interfacial adhesion between the flax fibres and the polyester matrix. These tests involved a commercial silane-based compatibilising additive, two experimentally synthesised agents, oleic acid (OA) and di-tert-butyl peroxide (DTBP). Furthermore, the flax fibres underwent acid or alkali treatment. The biocomposites were characterised by gel permeation chromatography, infrared spectroscopy, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and scanning electron microscopy (SEM). Mechanical properties were investigated through tensile testing. Biocomposites with a commercial silane-based additive and synthesised agent, based on maleic-anhydride, were assessed as the best solution. Nevertheless, all modifications, excluding alkali treatment of fibres, significantly increased the performance of the material.

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