竹粉/聚羟基丁酸戊酸共聚酯复合材料的结构性能  

Structure and Properties of Bamboo Powder/Poly( 3-hydroxybutyrate-co-3-hydroxyvalerate) Composites

作　　者：苏明垒 马晓军[1] 朱礼智[1] 

机构地区：[1]天津科技大学包装与印刷工程学院,天津300222 [2]中国林业科学研究院木材工业研究所,北京100091

出　　处：《高分子材料科学与工程》2016年第11期58-62,共5页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(31270607)

摘　　要：以竹粉和聚羟基丁酸戊酸共聚酯(PHBV)为原料,采用高温熔融共混挤出法制备了竹粉/PHBV复合材料,研究了不同竹粉含量对复合材料的力学性能、结晶度、分子结构及热稳定性的影响。结果表明,竹粉的加入提高了竹粉/PHBV复合材料的拉伸强度、断裂伸长率和弹性模量,但竹粉和PHBV的界面结合较差;高温复合造成竹粉中少量主成分发生了热降解,而对PHBV的结构影响不大。另外,随竹粉含量的增加,复合材料的结晶度先升高后降低,热稳定性略有降低。竹粉的加入有利于复合材料的成型加工。The poly（3-hydroxybutyrate-co-3-hydroxyvalerate）（PHBV） and bamboo powder were prepared by melt compounding and injection molding. The mechanical, crystallization and thermal properties of the composites were investigated while varying the level of bamboo content. The results show that the tensile strength, elongation at break and modulus of elasticity of the composites are all improved with addition of bamboo powder. However the interracial bonding between bamboo powder and PHBV is poor; the high temperature causes thermal degradation of the main ingredient of bamboo powder, but has little effect on the structure of PHBV. In addition, the crystallinity of the composites increases first and then decreases with addition of bamboo powder, while the thermal stability is reduced slightly. The addition of bamboo power is helpful for formation of the composites.

关 键 词：竹粉 聚羟基丁酸戊酸共聚酯 复合材料 力学性能 结晶性能 热性能 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业]