摘要
以２．２＇－双（２－唑啉）和双（２－唑啉基）苯作扩链剂，用焙融挤出的方法，对聚对苯二甲酸丁二酯（ＰＢＴ）进行扩链，考察扩链剂的用量、反应时间和反应温度对ＰＢＴ的特性粘度及端羧基含量（ＣＶ）的影响。结果表明，当用２，２＇－双（２－唑啉）作扩链剂时，ＰＢＴ的特性粘度［η］从０．７９９提高到０．９２６ｄＬ／ｇ，ＣＶ降至５ｅｑ／１０￣６ｇ以下；当用双（２－ 唑啉基）苯作扩链剂，［η］从０．７６３增至０．９２５ｄＬ／ｇ，ＣＶ降至１０ｅｑ／１０￣６ｇ以下，达到了较满意的扩链效果。
The chain of poly(1,4-butylene terephthalate)(PBT) is extended by the melt-extruded treatment.In this process, the chain extenders are 2, 2'-bis(2-oxazoline) and bis (2-oxazoline)benzene.The effects of the amount of the chain extender,reaction time and temperature on the intrinsic viscosity([η])and terminal carboxyl content(CV) of PBT were studied.The results show that when the chain extender is 2, 2'bis( 2-oxazoline),the[η] PBT increases from 0.799 to 0.926, CV decreases below 5(eq/10￣6g). When the chain extender is bis(2-oxazoline) benzene,[η]of PBT increases from 0.763 to 0. 925,CV decreases below 10(eq/10￣6g).The effect of chain-extending is rather satisfying.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
1996年第1期96-100,共5页
Polymer Materials Science & Engineering
基金
江苏省科委基金
关键词
聚对苯二甲酸
丁二酯
扩链剂
恶唑啉
增粘
扩链
s:poly(1,4-butylene terephthalate,2, 2'-bis(2-oxazoline) bis(2-oxazoline) benzene,chain extender
