文献类型：期刊文献

中文题名：木纤维/聚乳酸生物质复合材料耐久性和生物降解性能

英文题名：Endurance and biodegradability of wood fiber/poly(lactic acid) bio-composites

作者：郭文静[1] 王正[1] 鲍甫成[1] 常亮[1]

第一作者：郭文静

机构：[1]中国林业科学研究院木材工业研究所

年份：2009

卷号：0

期号：S2

起止页码：117-119

中文期刊名：现代化工

外文期刊名：Modern Chemical Industry

收录：CSTPCD;;Scopus;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：中国林业科学研究院中央级公益性科研院所基本科研业务费专项资金项目(CAFINT2007C02)

语种：中文

中文关键词：WF/PLA复合材料;降解性能;分子质量;热性能

外文关键词：WF/PLA bio-composites;biodegradability;molecular weight;thermal properties

分类号：TB332

摘要：研究了无相容剂及添加AD281或A3000相容剂的木纤维/聚乳酸(WF/PLA)生物质复合材料的使用耐久性及其降解性能。结果表明,WF/PLA复合材料性能随时间延长而下降,但也具有较好的耐久性,24个月后,弯曲强度和弯曲模量可保留90%以上;在土中埋6个月后,复合材料降解显著,力学性能明显降低,无添加剂和添加AD281的WF/PLA复合材料中PLA分子明显降解,但降解区域不同,有的发生在无定形区,有的在结晶区。添加A3000的复合材料耐久性最好,相对不易降解。
The use endurance and biodegradability of wood fiber/poly(lactic acid) bio-composites with compatibility AD281 or A3000 and without compatibility were investigated.The result indicates that the properties of WF/PLA composites decrease with the time lapsed,but they has good endurance too.Flexural strength and modulus still preserve more than 90% after 24 months.After buried in soil for 6 months,the bio-composites degrade obviously,the mechanical properties of the composites decrease significantly.The molecular weight of poly(lactic acid) in WF/PLA bio-composites with or without AD281 decreases too,but the degradation happens in different areas,some in amorphous area and some in crystal area.The WF/PLA bio-composite with A3000 has excellent endurance and not easy to be degraded.