聚丁二酸乙二醇酯(PES)及其共聚酯的合成与性能  

Synthesis,Characterization and Properties of Poly (ethylene succinate)(PES) and Its Copolyesters

作　　者：李邵波[1] 秦艳分[1] 沈金科[1] 周翔[1] 王秀华[1] 

机构地区：[1]浙江理工大学先进纺织材料与制备技术教育部重点实验室,浙江杭州310018

出　　处：《高分子材料科学与工程》2013年第4期13-16,共4页Polymer Materials Science & Engineering

基　　金：浙江省重点科技创新团队项目(2009R50013)

摘　　要：采用直接熔融缩聚法制备了聚丁二酸乙二醇酯(PES)和聚(丁二酸乙二醇-共-对苯二甲酸乙二醇酯)(PEST)。核磁共振(1H-NMR)分析表明,合成的共聚酯是典型的无规共聚酯树脂。差示扫描量热(DSC)和X射线衍射(XRD)测试表明,随对苯二甲酸(PTA)的加入,共聚物的结晶度先降低后增加,熔点先降低后上升;随ET共聚组分含量的增加,PEST的结晶形态从PES经过无定型态过渡到PET;玻璃化温度(Tg)随PTA的加入单调上升。热重(TG)分析显示,PTA的加入提高了聚酯的热稳定性,失重5%的温度由337.6℃上升到384.7℃。酶降解实验得出PES和PEST10有良好的降解性,降解性随着PTA的加入递减。Poly （ethylene suecinate）（PES） and copolyesters of poly （ethylene succinate-co-ethylene terephthalate） （PEST）were synthesized by two-stage melt polycondensation. 1H-NMR results show that polymerides are typical random copolyesters. The DSC curves and XRD patterns indicate that the copolyesters become less crystallizable, even amorphous, .then transition into the PET with increasing aromatic content. The DSC curves also show that the melting temperature（Tin） decreases first and then increases with the content of ET unit increasing, while the glasstransition temperatures （Tg） of the PEST copolyesters increases linearly. TGA curves show that thermal decomposition temperature increases since the temperature of mass loss of 5 % rises from 337.6 ℃ to 384.7 ℃ with ET unit content increasing. Enzyme degradation experiments show that PEST10 has the best biodegradable, and the degradablity of copolyesters decreases with ET unit content increasing_

关 键 词：生物降解聚酯 聚丁二酸乙二醇酯 共聚酯 酶降解 

分 类 号：TQ323.43[化学工程—合成树脂塑料工业]