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作 者:姚逸 王超军 刘勤 欧阳春平 卢昌利 郭志龙 张传辉 张尔杰 焦建 曾祥斌 Yao Yi;Wang Chaojun;Liu Qin;Ouyang Chunping;Lu Changli;Guo Zhilong;Zhang Chuanhui;Zhang Erjie;Jiao Jian;Zeng Xiangbin(Zhuhai Kingfa Biomaterial Co.,Ltd.,Zhuhai 519050;National-certified Enterprise Technology Center,Kingfa Science and Technology Co.,Ltd.,Guangzhou 510520,China)
机构地区:[1]珠海金发生物材料有限公司,广东珠海519050 [2]金发科技股份有限公司企业技术中心,广东广州510520
出 处:《广东化工》2022年第14期44-46,共3页Guangdong Chemical Industry
摘 要:采用L-丙交酯开环聚合制备了高分子量聚L-乳酸(PLLA),并研究了各反应条件对聚合反应效率的影响。通过傅里叶红外光谱(FTIR)、核磁共振氢谱(HNMR)、凝胶渗透色谱(GPC)、差示扫描量热仪(DSC)及粘度测定仪等分析手段对产物的结构和性能进行了表征。结果显示,当单体与催化剂摩尔比为5000︰1,聚合温度为180℃,聚合时间为3 h,聚合产物PLLA的特性粘度达到1.67 dL/g,数均分子量(Mn)达到10.2万,聚合物分散性指数(PDI)为1.45。High molecular weight poly(L-lactic acid)(PLLA)was prepared by ring-opening polymerization of L-lactide,and the effects of reaction conditions on the polymerization efficiency were studied.The structure and properties of the product were characterized by Fourier transform infrared spectroscopy(FTIR),hydrogen nuclear magnetic resonance spectroscopy(HNMR),gel permeation chromatography(GPC),differential scanning calorimeter(DSC)and viscometer.The results showed that when the molar ratio of monomer to catalyst was 5000︰1,polymerization temperature was 180℃,polymerization time was 3 h,the intrinsic viscosity of PLLA reached 1.67 dL/g,the number average molecular weight(Mn)reached 102,000,and the dispersion index(PDI)was 1.45.
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