期刊
COMPOSITES SCIENCE AND TECHNOLOGY
卷 124, 期 -, 页码 1-9出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2015.12.016
关键词
Polymer-matrix composites (PMCs); Nano composites; Mechanical properties; Thermal stability; Interfacial strength
资金
- National Natural Science Foundation of China [51103160]
Wood-plastic composites (WPCs) with excellent water resistance, light absorption, mechanical properties, and thermal stability features were fabricated on an assembled nano-interface using cationic polyethyleneimine-nano-ZnO (PEI-ZnO) and anionic sodium polyacrylate-wood (PAAS-wood). The charge grafting, assembly, and dispersive morphology on the wood surface were analyzed by ZETA potentials, SEM images, crystal features, XPS and FTIR spectra. With a three dimensional shielding assembling nano-network, water absorption of wood-polypropylene composite decreased from 5.20 wt.% to 1.83 wt.%, and the decomposition temperature (Td) of wood and polypropylene were enhanced by 114 degrees C and 63 degrees C depending on passing and hindering. The tensile strength and the glass transition temperature (Tg) were enhanced from 20.42 MPa, 11.7 degrees C to 38.73 MPa, 33.21 degrees C, respectively, likely due to firmed nano-dispersion, strong interfacial adhesion, and sufficient load transfer. In addition, ultraviolet and near-infrared resistance of the composite were found to be promoted by adopting the assembled nano-interface. (C) 2015 Published by Elsevier Ltd.
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