有机稀土金属催化剂的制备及应用研究  

Preparation and application of organic rare earth metal catalysts

作　　者：李朝华 袁明伟[1] 蒋琳[1] 王煜丹 李宏利[1] 袁明龙[1] LI Chao-hua;YUAN Ming-wei;JIANG Lin;WANG Yu-dan;LI Hong-li;YUAN Ming-long(Engineering Research Center of Functional Biopolymer Materials of Yunnan,Yunnan Minzu University,Kunming 650500,China)

机构地区：[1]云南民族大学云南省聚乳酸工程技术研究中心,云南昆明650500

出　　处：《云南民族大学学报（自然科学版）》2018年第5期389-393,共5页Journal of Yunnan Minzu University:Natural Sciences Edition

基　　金：国家自然科学基金(31460247;81460542;31460247);云南省科技厅青年项目(2017FD121);云南省高校生物可降解材料科技创新团队(2017 HC034);云南民族大学青年基金科研项目(01042030)

摘　　要：采用氧化镧、氧化钕、氧化钇与浓盐酸反应制成其相应的氯化物,分别与皂化过的新癸酸和异辛酸反应制备出6种有机稀土金属羧酸盐,并分别用于催化ε-己内酯开环聚合,聚合物利用GPC与1H NMR表征,实验结果表明:新癸酸镧、新癸酸钕、异辛酸镧、异辛酸钕均有一定的催化效应,能够制备满足各种应用的低分子量PCL低聚物.This research used lanthanum oxide, neodymium oxide and yttrium oxide to react with strong hydrochloric acid and produce the corresponding chloride, and after saponification reacted respectively with neo -decanoic acid and 2 - Ethylhexanoic acid to prepare six kinds of organic rare earth metal carboxylates. They were respectively used in catalytic epsilon -caprolactone ring -opening polymerization, and polymers using GPC and I H NMR characterization. The results show that the new decanoic acid lanthanum, new decanoic acid neodymium, lanthanum and neodymium iso -octanate all have certain catalytic effect, and can satisfy the preparation of low- molecularweight PCLS oligomers.

关 键 词：稀土金属 开环聚合 低聚物 

分 类 号：R914.5[医药卫生—药物化学]