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Open AccessArticle

Properties of Poplar Fiber/PLA Composites: Comparison on the Effect of Maleic Anhydride and KH550 Modification of Poplar Fiber

1
Institute of Chemistry and Industry of Forest Products, Chinese Academy of Forestry, Nanjing 210042, Jiangsu, China
2
College of Furnishings and Industrial Design, Nanjing Forestry University, Nanjing 210037, Jiangsu, China
3
College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, Heilongjiang, China
4
Department of Chemistry and Engineering, University of Laval, Quebec City, PQ G1V 0A6, Canada
*
Author to whom correspondence should be addressed.
Polymers 2020, 12(3), 729; https://doi.org/10.3390/polym12030729 (registering DOI)
Received: 2 March 2020 / Revised: 20 March 2020 / Accepted: 23 March 2020 / Published: 24 March 2020
(This article belongs to the Special Issue Wood Plastic Composites)
To improve the interfacial adhesion and dispersion of a poplar fiber in a polylactic acid (PLA) matrix, maleic anhydride (MA) and a silane coupling agent (KH550) were used to modify the poplar fiber. The poplar fiber/PLA composites were produced with different modifier contents. The mechanical, thermal, rheological, and physical properties of composites were investigated. A comparison of different natural fiber modifications on the properties of composites was also analyzed. The results showed that both MA and KH550 could improve the interfacial adhesion between the poplar fiber and PLA, resulting in the enhanced mechanical properties of the composite, with 17% and 23% increases of tensile strength for 0.5% MA and 2% KH550, respectively. The thermal properties of the composites were improved at 6% KH550 (a 9% enhancement of T90%) and decreased at 0.5% MA (a 6% decrement of T90%). The wettability of the composites obtained a 11.3% improvement at 4% KH550 and a 5% reduction at 4% MA. Therefore, factors such as mechanical properties, economic efficiency, and durability should be carefully considered when choosing the modifier to improve the property of the composite. View Full-Text
Keywords: poplar fiber; polylactic acid; interfacial adhesion; KH550; maleic anhydride poplar fiber; polylactic acid; interfacial adhesion; KH550; maleic anhydride
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MDPI and ACS Style

Yang, Z.; Feng, X.; Xu, M.; Rodrigue, D. Properties of Poplar Fiber/PLA Composites: Comparison on the Effect of Maleic Anhydride and KH550 Modification of Poplar Fiber. Polymers 2020, 12, 729.

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