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Polymers 2017, 9(12), 712; https://doi.org/10.3390/polym9120712

Effects of Matrix Modification on the Mechanical Properties of Wood–Polypropylene Composites

1
Key Laboratory of Bio-Based Material Science and Technology (Ministry of Education), Northeast Forestry University, Harbin 150040, China
2
College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
*
Authors to whom correspondence should be addressed.
Received: 31 October 2017 / Revised: 28 November 2017 / Accepted: 13 December 2017 / Published: 14 December 2017
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Abstract

Polypropylene (PP) modified with two reactive monomers, divinyl benzene (DVB) and maleic anhydride (MAH), was used as the matrix to prepare wood–polypropylene composites to improve interfacial compatibility. The effects of the co-modified PP matrices with different DVB concentrations on the mechanical properties of the composites were evaluated. Compared with unmodified composites and the composites containing a coupling agent, the composites modified with MAH only, and that with both MAH and DVB, improved the tensile, flexural, and impact strengths. Interestingly, adding a small amount of DVB (0.4%) resulted in significant increase in impact strength, relative to that of the composites modified with MAH only. Dynamic mechanical analysis and fracture morphology analysis of the modified composites also suggested an improvement in interfacial adhesion owing to the matrix modification. View Full-Text
Keywords: matrix modification; chemical graft; polymer–matrix composites; fiber–matrix interface; mechanical properties matrix modification; chemical graft; polymer–matrix composites; fiber–matrix interface; mechanical properties
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Yi, S.; Xu, S.; Fang, Y.; Wang, H.; Wang, Q. Effects of Matrix Modification on the Mechanical Properties of Wood–Polypropylene Composites. Polymers 2017, 9, 712.

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