摘要
通过酯化和缩聚反应制备聚丁二酸丁二醇酯(PBS)、聚己二酸丁二醇酯(PBA)和聚(丁二酸-co-己二酸丁二醇)共聚酯(P(BS-co-BA)),对PBS、PBA和P(BS-co-BA)进行酶促降解研究。结果表明:与PBS和PBA相比,共聚酯具有良好的生物降解性能。6种聚酯酶水解速率依次为P(BS-co-40%BA)>P(BS-co-60%BA)>P(BS-co-80%BA)>P(BS-co-20%BA)>PBA>PBS。P(BS-co-40%BA)在10 h内基本完全降解,比PBS快26 h。与PBA相比,共聚酯的热稳定性得到提高,P(BS-co-40%BA)热分解50%的温度比PBA高22.3℃。随着降解时间的增加,共聚酯的化学结构、晶体结构和热稳定性基本不变,有利于其在新能源汽车设计中的应用。
Poly(butylene succinate)(PBS),poly(butylene adipate)(PBA)and poly(butylene succinate-co-butylene adipate)(P(BS-co-BA))were prepared by esterification and polycondensation.The enzymatic degradation of PBS,PBA and P(BS-co-BA)was studied.The results show that the copolyester has good biodegradability compared with PBS and PBA.The hydrolysis rates of the six polyesterases are P(BS-co-40%BA)>P(BS-co-60%BA)>P(BS-co-80%BA)>P(BS-co-20%BA)>PBA>PBS.P(BS-co-40%BA)is almost completely degraded within 10 h,26 h faster than PBS.Compared with PBA,the thermal stability of the copolyester is improved,and the temperature of 50%thermal decomposition of P(BS-co-40%BA)is 22.3℃higher than that of PBA.With the increase of degradation time,the chemical structure,crystal structure and thermal stability of copolyester are basically unchanged,which is conducive to its application in the design of new energy vehicles.
作者
马莹
侯微
苏婷婷
MA Ying;HOU Wei;SU Ting-ting(Dalian Ocean University,Dalian 116023,China;Fushun Special Equipment Supervision and Inspection Institute of Liaoning Province,Fushun 113001,China;School of Petrochemical Engineering,Liaoning Petrochemical University,Fushun 113001,China)
出处
《塑料科技》
CAS
北大核心
2023年第1期95-100,共6页
Plastics Science and Technology
基金
大连市社科联2022年第二批立项课题(2022dlskzd319)。
