不同扩链剂对PBS性能的影响.pdf

第41卷第2期
塑料工业
2013年2月
CHINA PLASTICS INDUSTRY
97
不同扩链剂对PBS性能的影响
张昌辉,李林东“,王磊,周明
(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)
摘要:通过熔融溶液相结合的方法合成聚丁二酸丁二醇酯(PBS)预聚物。用异佛尔酮二异酸酯(IPD)、六
亚甲基-1,6-二异氧酸酯(HD)和丁二酰氯(SUC)对PBS预聚体进行扩链改性。采用熔点仪测定PBS的熔点;
采用傅里叶变换红外光谱仪对PBS的结构进行了表征;采用凝胶渗透色谱仪、热重仪和万能实验机测定了PBS的摩
尔质量及其分布、热稳定性和力学性能;测定失重率,考察不同扩链剂对PBS降解性能的影响。结果表明:PBS扩链
后摩尔质量均有显著提高,摩尔质量分布均小于扩链前;且断裂伸长率等力学性能和热分解温度等热性能也都有明显
改善。但用不同扩链剂扩链后,PBS降解性能有较大区別
关键词:聚丁二酸丁二醇酯;二元异氰酸酯;二元氯;扩链剂;热稳定性;力学性能
DOI:10.3969/jiss:.1005-5770.2013.02.025
中图分类号:TQ323.4
文献标识码:A
文章编号:1005-5770(2013)02-0097-03
Influence of Different Chain Extension Agent on Property of PB
ZHANG Chang-hui, LI Lin-dong, WANG Iei, ZHOU Ming
Key Laboratory of Auxiliary Chemistry &Technology for Chemical Industry, Ministry of Education, Shanxi University
of Science Tech
Xi'an 710021 Chi
Abstract The poly(butylene sueeinate)(PBS )was synthesized by combination of solution polycondensation
and melt polycondensation. The chain of PBS was extended by isophorone diisocyanate(PDI), hexamethylene
diisocyanate(HDI )and succinyl chloride(SUC). The melting point of PBS was determined by melting point
instrument. Chemical structure of PBS was characterized by means of FTTR. Relative molecular mass and its
distribution thermal stability and mechanical properties of PBS was explored through GPC, TGA and
universal testing machine. The weightlessness rate of PBS was determined and the influence of different chain
extension agents on degradation performance of PBS was analyzed. The results showed that relative molecular
mass and its distribution, thermal and mechanical properties of PBS after chain-extending were better than
PBS before chain-extending. The influence of different chain extension on degradation performance of PBS was
different distinctly
Keywords: Poly Butylene Sueeinate ) Diisocyanate; Succinyl Chloride; Chain Extender
Thermal Stability; Mechanical Propert
聚丁二酸丁二醇酯(PBS)具有良好的生物降解二元异氰酸酯类扩链剂对PBS扩链,探讨不同扩链
性能和生物相容性能-,开发应用的空问非常大,剂对PBS性能的影响。
但是由于现有方法合成的PBS摩尔质量过低,诸多1实验部分
力学性能达不到应用指标,故采用扩链的方法进行改
1主要原料
性
即加入一种合适的扩链剂提高其摩尔质量
异佛尔酮二异氰酸酯(IPDI)、六亚甲基-1,
拓展其应用范围。近年来,国内外对于PBS的扩链
二异氰酸酯(HDI)、对甲苯磺酸:分析纯,天津
研究一直在进行,但不同扩链剂对PBS性能影响进
市科密欧化学试剂开发中心;丁二醇、石油醚:分析
行系统研究的工作却未见报道。
纯,天津市福晨化工试剂厂;丁二酸、三氯甲烷:分
本文采用新型的二元酰氯类扩链剂与现在主流的
西安市科技计划项日(CXY1021-5)来*联系人lilindong-1985@0163.com
作者简介:张昌辉,男,1962年生,硕士生导师,教授,主要从事轻化工助剂及可降解材料的研究工作。
zhangch7208@163.com