纤维素醋酸酯和聚乳酸接枝共聚物的结构与热性能研究  

Study on structure and thermal properties of cellulose acetate and PLA graft copolymer

作　　者：邓文键[1] 庄旭品[1] 

机构地区：[1]天津工业大学纺织学院,天津300160

出　　处：《产业用纺织品》2011年第1期7-11,共5页Technical Textiles

摘　　要：纤维素熔融纺丝技术是纤维素纤维加工的新思路。以二醋酸纤维素(CDA)为接枝骨架,L-丙交酯(L-LA)为接枝单体,在辛酸亚锡(Sn(Oct)2)的催化下,通过L-LA的开环聚合反应,合成了纤维素醋酸酯和聚乳酸的接枝共聚物(CDA-g-PLAs),并利用FT-IR、1H-NMR、DSC、和TG-DTG对其结构和热性能进行表征。结果表明,产物为纤维素醋酸酯与PLA的接枝共聚物,相对于CDA,不同接枝结构的接枝共聚物的熔点在135～145℃范围内,热分解温度高于200℃,具有较好的热加工性能,可为纤维素的熔融加工提供基础原料。Cellulose melt-spinning technology is a new idea of cellulose fiber processing. Basing on CDA as graft frame and L-LA as graft monomer, graft copolymer of cellulose acetate and PLA was synthesized by ring-opening polymerization using Sn （Oct） 2 as catalyst, and be characterized on its structure and thermal property adopting FF-IR, ^1H-NMR, DSC and TG-DTG. The results showed that the melting point range of graft eopolymer of CDA and PLA was 135 - 145℃ basing on various graft structures. While thermal decomposition temperature was over 200℃, CDA-g-PLAs had good thermal proeessing performance and would be foundation of melt processing of cellulose.

关 键 词：纤维素醋酸酯 聚乳酸 接枝共聚物 热塑性 

分 类 号：TQ316.3[化学工程—高聚物工业]