双噁唑啉化合物对PBT的增粘作用  

CHAIN EXTENSION OF POLY(1,4-BUTYLENE TEREPHTHALATE BY USING BIS(2-OXAZOLINE)

作　　者：陈瑞珠[1] 仉旭峰 潘恩黎[1] 

机构地区：[1]南京化工学院化工系

出　　处：《高分子材料科学与工程》1996年第1期96-100,共5页Polymer Materials Science & Engineering

基　　金：江苏省科委基金

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.

关 键 词：聚对苯二甲酸 丁二酯 扩链剂 恶唑啉 增粘 扩链 

分 类 号：O633.14[理学—高分子化学] O631.3[理学—化学]