竹纤维/聚乳酸复合材料界面调控  

Interface control of bamboo fibers/polylactic acid composites

作　　者：李新功[1] 郑霞[1] 吴义强[1] 

机构地区：[1]中南林业科技大学材料科学与工程学院,长沙410004

出　　处：《复合材料学报》2012年第4期94-98,共5页Acta Materiae Compositae Sinica

基　　金：湖南省科技重大专项(2011FJ1006);市校产学研合作产业化培育项目(11cy027);国家林业局948项目(2009-4-51)

摘　　要：分别采用碱(NaOH)处理、异氰酸酯(MDI)处理以及NaOH+MDI处理的界面调控方法对竹纤维/聚乳酸复合材料界面进行调控。结果表明,NaOH处理可以进一步细化竹纤维,增加比表面积,实现对竹纤维/聚乳酸复合材料界面的物理调控;MDI处理能够实现对复合材料界面的化学调控;三种界面调控方法均可以改善竹纤维/聚乳酸复合材料的力学性能,而NaOH+MDI界面调控效果最佳,调控处理后复合材料拉伸强度和冲击强度分别增加了36.9%和36.5%。The interface of the bamboo fibers/polylactic acid was controlled by alkali（NaOH） treatment,isocyanate（MDI） treatment and NaOH＋MDI treatment,respectively.The results show that the NaOH treatment could further refine bamboo fibers and increase specific surface area,realizing the physical control of bamboo fibers/polylactic acid composites interface;MDI treatment could realize the chemical control of bamboo fibers/polylactic acid composites interface.All of the three kinds of the interface control methods could improve the mechanical properties of bamboo fibers/polylactic acid composites,among which NaOH＋MDI treatment has the best positive effects on the interface properties of the composites,the tensile strength and impact strength of the bamboofibers/polylactic acid composites with interface control are increased 36.9% and 36.5%,respectively.

关 键 词：竹纤维(BF) 聚乳酸 复合材料 界面调控 力学性能 

分 类 号：TB332[一般工业技术—材料科学与工程]