聚(对苯二甲酸丁二醇酯-co-衣康酸丁二醇酯)的改性  

Modification of Poly(Butylene Terephthalate-co-Butylene Itaconate)Copolyesters

作　　者：王晓红[1] 郭方荣[1] 高传慧[1] 朱来响 张欣华[1] 武玉民[1] 

机构地区：[1]青岛科技大学化工学院,山东青岛266042

出　　处：《石油化工高等学校学报》2015年第1期12-15,共4页Journal of Petrochemical Universities

基　　金：山东省博士后创新专项资助项目(201003052);青岛市基础研究-联合基金计划项目(12-1-43-(33)-jch)

摘　　要：在衣康酸二甲酯(DI)、对苯二甲酸二甲酯(DMT)、1,4-丁二醇(BDO)共聚反应生成聚(对苯二甲酸丁二醇酯-co-衣康酸丁二醇酯)(PBTI)的基础上,加入亲水性的聚乙二醇(PEG),合成了一系列不同相对分子质量的可降解脂肪族-芳香族共聚酯—聚对苯二甲酸-co-衣康酸丁二醇聚乙二醇酯(PBTIG)。对共聚酯的降解性能进行测试。结果表明,改性前共聚酯的降解速率随着共聚酯链中衣康酸含量的增加而加快,并且随相对分子质量的升高而降低。水解实验表明,160h后,PBTI残余量为91.35%,加入亲水性的PEG改性后,共聚酯的残余量仅为81.20%,降解速率比PBTI提高了117.34%。A series of copolyesters-poly （butylene terephthalate-co-butylene itaconate）（PBTI）were synthesized by melt polycondensation from dimethyl itaconate （DI）,1,4-butanediol （BD）and dimethyl terephthalate （DMT）.On this basis, hydrophilic diol（PEG）was selected as comonomer component to react with DI,DMI and BD via direct melt polycondensation. A series of degradable aliphatic-aromatic copolyesters （PBTIG） with different PEG molecular weight and content were synthesized.Hydrolytic degradation results demonstrated that with the increase of the itaconic acid content,the degradation rate was speeded up,andthe hydrophilic PEG significantly increased the degradation rate of the copolyesters.The hydrolysis experiments showed that after 160 h,the residual of the PBTI was 91.35%,while,the residual amount is only 81.20% after adding hydrophilic PEG.The degradation rate was increased by 117.34% than PBTI.

关 键 词：衣康酸二甲酯 对苯二甲酸二甲酯 聚乙二醇 降解性能 

分 类 号：TE65[石油与天然气工程—油气加工工程] O631.1[理学—高分子化学]