论文部分内容阅读
用负离子络合型催化剂——Al/Zn双金属氧桥烷氧化物,[(RO)_2OAlO]_2Zn,研究了ε-己内酯与D,L-丙交酯的嵌段共聚合,合成了预定结构的单分散的(?/?1.12)AB型嵌段共聚物,通过控制两种链段的比例能有效控制药物释放和生物降解的速度,可望成为新型生物降解性控制药物释放的载体及其它生物医用材料。
The block copolymerization of ε-caprolactone with D, L-lactide was studied by using anion complexation catalyst - Al / Zn bimetallic oxoalkane oxide [(RO) _2OAlO] _2Zn The monodisperse (? /? 1.12) AB-type block copolymer with a predetermined structure can effectively control the drug release and the biodegradation rate by controlling the ratio of the two segments and is expected to be the carrier of the novel biodegradability-controlled drug release And other biomedical materials.