期刊
COMPOSITES SCIENCE AND TECHNOLOGY
卷 66, 期 13, 页码 2231-2241出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2005.12.011
关键词
composite; poly(butylene succinate); water crosslinking; coupling agent; biodegradability
Wood flour (raw cellulose) reinforced poly (butylene succinate) (PBS) composites have been prepared utilizing unique water-crosslinking technique to improve the physical properties of composites. The composites were treated with a coupling agent (vinyltrimethoxysilane, VTMOS) and then were compounded in a twin screw extruder. The compound was moisture-crosslinked. C-13 NMR, H-1 NMR and FT-IR spectra were utilized to monitor and characterize the water-crosslinking reaction. Composites via water-crosslinking treatment exhibits improved mechanical properties due to the interfacial bonding between the wood fiber and the PBS matrix. Scanning electron microscopy (SEM) of the fracture surfaces of water-crosslinked composites showed superior interfacial linkage between the wood fiber and the PBS matrix. Thermal analysis on the water-crosslinked composites indicated that thermal degradation temperature of composite increased with the increasing of water-crosslinking time. POM microphotographs revealed that the water-crosslinking reaction can increase the crystalline rate but decrease the spherulites size of PBS. Biodegradation tests showed that adding wood flour increased the biodegradability of composite; however, the water-crosslinking reaction may reduce the biodegradability of wood composite. (c) 2005 Elsevier Ltd. All rights reserved.
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