二酸和二醇改性聚丁二酸丁二醇酯的性能比较  

Performance Comparison of Modification Poly(butylenes-succinate) by Diglycollic Acid and 1,4-Cyclohexanedimethylene

作　　者：张敏 惠媛媛[2] 张若琳[2] 邱建辉[3] 

机构地区：[1]浙江温州轻工研究院,浙江温州325003 [2]陕西科技大学,教育部轻化工助剂化学与技术重点实验室,陕西西安710021 [3]日本秋田县立大学

出　　处：《塑料》2012年第1期5-8,共4页Plastics

基　　金：温州科技计划项目(H20080045);陕西省教育厅产业化培育项目(2010JC01)

摘　　要：采用二酸[二乙醇酸(DGA)]和二醇[1,4-环己烷二甲醇(1,4-CHDM)]分别对PBS进行共聚改性。通过热分析、WAXD、拉力试验等对共聚物的性能进行了比较研究。结果表明:相比PBS,共聚物的球晶尺寸有所减小,结晶度降低。无论是酸还是醇的改性都使共聚物的柔韧性增强,断裂伸长率提高了近两倍。热分析结果还表明:相比PBS的Tg(-34℃),具有立体构造1,4-CHDM的添加,使P(BS-co-CHDM)的Tg上升为-28℃;线性结构DGA的添加,使P(BS-co-DGA)的Tg下降到-37℃,但tanδ都是增大的。热分解温度(失重率为5%时)仍在300℃以上,说明共聚物仍具有良好的热稳定性。Diglycollic acid （DGA） and 1,4-cyclohexanedimethylene （1,4-CHDM） were used to modify the poly （butylenes-suecinate） （ PBS）, the products were P （ BS-co-CHDM ） and P （ BS-co-DGA ）. Their thermal, crystallization and mechanical properties were investigated by TGA, DSC,WAXD and tensile testing, the results showed that compared to PBS, modified by either DGA or 1,4-CHDM,their spherulite size and crystallinity had decreased,flexibility had enhanced and the elongation had increased to nearly twice. The result of thermal analysis showed that introducing stereo-structure of 1,4-CHDM in the PBS,increased the T of the P（BS-co-CHDM） to - 28 ~C ;Introducing linear structure of DGA,decreased the T of the P（BS-co-DGA） to -37 ~C but tan8 had increased;The decomposition temperature of the copolymers was above 300℃ ,with a good thermal stability.

关 键 词：聚丁二酸丁二醇酯 共聚改性 立体结构和线性结构 结晶 力学性能 

分 类 号：TQ323.43[化学工程—合成树脂塑料工业]