多组分共聚酯的制备及亲水性研究  

Study on preparation and hydrophilic property of multi-component copolyesters

作　　者：吉鹏[1] 王朝生[1] 王华平[1] 雷鸣 

机构地区：[1]东华大学材料科学与工程学院,上海201620 [2]宁波康鑫化纤股份有限公司,浙江宁波315336

出　　处：《合成纤维工业》2014年第3期14-18,共5页China Synthetic Fiber Industry

基　　金：国家支撑项目(2011BAE05B01)

摘　　要：采用对苯二甲酸(PTA)直接酯化法,在第一酯化阶段添加山梨醇,第二酯化阶段添加间苯二甲酸二乙酯-5-磺酸钠和聚乙二醇,合成多组分亲水共聚酯;研究了共聚酯的化学结构、熔融过程、热稳定性及亲水性。结果表明:引入的多组分均参加了共聚反应,得到产物为多组分共聚酯;随着山梨醇添加量的增加,共聚酯的特性黏数([η])变小,结晶性能变差,热稳定性下降,亲水性增大;当添加的山梨醇相对PTA的摩尔分数为1.0%时,共聚酯的[η]为0.558 dL/g,熔点为232.91℃,结晶度为22.43%,起始分解温度388.1℃,与水的表面接触角减小到46°。A series of multi-component hydrophilic copolyesters were prepared via purified terephthalic acid （PTA） direct es- terification with the incorporation of sorbitol at the first esterification stage and 5-sodium sulfobis-（hydroxyethyl） isophthalate and polyethylene glycol at the second esterification stage. The chemical structure, melting process, thermal stability and hydrophilic property of the copolyesters were studied. The results showed that the incorporated components were all involved into the copolymerization to prepare the target product of multi-component copolyesters ; the intrinsic viscosity （ [ η] ）, crystallization behavior and thermal stability of the copolyesters were decreased and the hydrophilic property was increased as the addition of sorbitol was increased ; the copolyesters had [ η ] of 0. 558 dL/g, melting point 232.91 ℃, crystallinity 22.43% and initial degradation temperature 388.1 ℃ and water contact angle 46°.

关 键 词：聚对苯二甲酸乙二醇酯 共聚酯 山梨醇 聚乙二醇 多组分 亲水性 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业]