文献类型：期刊文献

英文题名：Influence of heat treatment on the heat distortion temperature of poly(lactic acid)/bamboo fiber/talc hybrid biocomposites

作者：Shi, Q. F.[1];Mou, H. Y.[1];Li, Q. Y.[1];Wang, J. K.[1];Guo, W. H.[1]

机构：[1]E China Univ Sci & Technol, Polymer Alloy Lab, Key Lab Preparat & Applicat Ultrafine Mat, Minist Educ,Sch Mat Sci & Engn, Shanghai 200237, Peoples R China

年份：2012

卷号：123

期号：5

起止页码：2828

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：;EI(收录号：20114914576232);WOS:【SCI-EXPANDED(收录号:WOS:000298086200032)】；

基金：Contract grant sponsor: National Key Technology R & D Program of China; contract grant number: 2008BAC46B10.Contract grant sponsor: Shanghai Leading Academic Discipline Project; contract grant number: B502.Contract grant sponsor: Shanghai Key Laboratory Project; contract grant number: 08DZ2230500.

语种：英文

外文关键词：annealing; composites; biodegradable; thermal properties; heat distortion temperature

摘要：Influence of heat treatment and fillers on the heat distortion temperature (HDT) of poly(lactic acid) hybrid biocomposites was intensively studied through HDT testing, polarizing microscope (POM), differential scanning calorimetry (DSC), and dynamic mechanical analysis (DMA). With loading 20 wt % BF or 20 wt % talc, improvement of HDT in PLA composite was about 10 degrees C comparing with neat PLA after heat treatment. Moreover, there was a great improvement (above 45 degrees C) of HDT in PLA composites with loading 20 wt % BF and 20 wt % talc simultaneously after heat treatment. Transcrystallization was observed during heat treatment and isothermal crystallization of PLA composites with loading BF and talc simultaneously. There was no similar phenomenon in other PLA composite with loading only one filler. The possible mechanism of forming transcrystallization was proposed. DSC and DMA were also used to clarify the variation in HDT before and after heat treatment, and the results suggest that the crystallinity, modulus and glass transition changed, especially formation of transcrystallization played a key role in improvement of HDT in PLA composites. (c) 2011 Wiley Periodicals, Inc. J Appl Polym Sci 123:2828-2836, 2012