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用癸二酸、己二酸部分取代丁二酸,通过熔融、溶液相结合的聚合方法,得到两者一系列共聚物。选用PBS、20%癸二酸取代丁二酸的共聚物P(BS-co-BA)和20%己二酸取代丁二酸的共聚物P(BS-co-BE)作为样品,在土壤悬浮液中进行降解,通过降解前后的失重率变化以及薄膜表面的形貌变化对试验结果进行表征。结果表明:扩链前后PBS,P(BS-co-BA)和P(BS-co-BE)均具有一定的生物降解性能,大小顺序均为P(BS-co-BE)>P(BS-co-BA)>PBS,但扩链后聚合物的降解性能略低于扩链前的聚合物。
With sebacic acid, adipic acid partially substituted succinic acid, by melting, solution polymerization method, to obtain a series of copolymers. The copolymer P (BS-co-BA) with 20% sebacic acid instead of succinic acid and 20% adipic acid substituted succinic acid copolymer P (BS-co-BE) Liquid degradation, through the degradation before and after the weight loss rate changes and the film surface morphology changes on the test results were characterized. The results showed that the biodegradability of PBS, P (BS-co-BA) and P (BS-co-BE) co-BA)> PBS, but the polymer after the chain extension slightly degrades the polymer before the chain extension.