文献类型：期刊文献

中文题名：聚氨酯绷带用PEG-CL-LA共聚物的制备及其性能的研究

英文题名：Preparation and properties of PEG-CL-LA copolymer for polyurethane bandage

作者：虞远忠[1];夏浙安[1];陈伶俐[1];叶炜[1]

机构：[1]华东理工大学材料科学与工程学院,上海200237

年份：2024

卷号：33

期号：4

起止页码：35

中文期刊名：中国胶粘剂

外文期刊名：China Adhesives

收录：CSTPCD

语种：中文

中文关键词：聚乙二醇;聚氨酯绷带;ε-己内酯;乳酸

外文关键词：polyethylene glycol;polyurethane bandage;ε-caprolactone;lactic acid

摘要：以辛酸亚锡为催化剂,聚乙二醇(PEG)为起始剂,ε-己内酯(CL)和乳酸(LA)为原料,在170℃和高真空的条件下直接缩聚合成了不同数量CL单元与LA单元的二元醇共聚物(PLCA)。PLCA与过量的4,4’-二苯基甲烷二异氰酸酯(MDI-100)及少量叔胺类催化剂混合,在70℃反应,得到异氰酸酯封端的共聚物混合胶体(PLCA-PU),并涂覆在聚酯多孔编织带上制备出聚氨酯绷带。保持PEG的量,改变CL和LA的比例和异氰酸酯的量,得到一系列的PLCA和PLCA-PU。对它们的结构进行了分析,并对聚氨酯绷带的固化时间、径向压缩力值进行了测试。研究结果表明:成功制备了PLCA和PLCA-PU;当R=5、n(PEG)∶n(CL)∶n(LA)=1∶6∶7时,PLCA-PU制备的绷带的固化时间为383 s,压缩力值最高能达到19.4 N;选用合适的物料配比可以满足绷带尽快固化、具有合适刚性强度的要求。
Using stannous octoate as the catalyst,polyethylene glycol(PEG) as the starting agent,ε-caprolactone(CL) and lactic acid(LA) as raw materials,the binary alcohol copolymers(PLCA) with different quantities of CL unit and LA unit were directly condensed and synthesized under the condition of 170 ℃ and high vacuum.PLCA was mixed with an excess of 4,4′-diphenylmethane diisocyanate(MDI-100) and a small amount of tertiary amine catalyst,reacted at 70 ℃ to obtain a copolymer mixed colloid(PLCA-PU) with isocyanate end terminated,which was then coated on polyester porous woven belt to prepare polyurethane bandage.By maintaining the amount of PEG,changing the ratio of CL and LA and the amount of isocyanate,a series of PLCA and PLCA-PU were obtained.Their structures were analyzed,and the curing time and radial compressive force of polyurethane bandage were tested.The research results showed that PLCA and PLCA-PU had been successfully prepared.When R=5,and n(PEG)∶n(CL)∶n(LA)=1∶6∶7,the curing time of the bandage prepared by PLCA-PU was 383 s,the maximum compressive force could reach 19.4 N.Choosing the appropriate material ratio could meet the requirements of rapid curing and having appropriate rigidity and strength of bandage.