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The influence of hot-press temperature andcooling rate on thermal and physicomechanicalproperties of bamboo particle-polylactic acidcomposites

By Tung-Lin Wu, Yi-Chi Chien, Tsai-Yung Chen and Jyh-Horng Wu

Abstract

Extrusion and injection moldings are standard processes for fabricating natural fiber-reinforced plastic composites, but both processes are generally not suitable for production of large-size pieces and products with high loadings of lignocelluloses. In this study, a medium-density bamboo plastic composite (BPC) was completely and successfully manufactured from bamboo fibers and polylactic acid (PLA) in the ratio of 1:1 by the flat-platen pressing process. The effects of pressing and cooling parameters on the thermomechanical properties of the BPCPLA have been investigated. The BPCPLA prepared at temperatures >180°C and cooling rates >10°C min-1 exhibited superior mechanical properties and matrix crystallinity. Under these conditions, a stronger interaction between the filler and the polymer matrix occurs and the mobility of the molecular chains at the interface decreases, which leads to a higher stiffness of the composite

Topics: bamboo particle, bamboo plastic composite (BPC), green composite, polylactic acid, processing parameter, thermomechanical property, wood plastic composite (WPC)
Year: 2014
DOI identifier: 10.1515/hf-2012-0087
OAI identifier: oai:ir.lib.nchu.edu.tw:11455/85268
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