SYNTHESIS AND CHARACTERIZATION OF BIODEGRADABLE HYDROGELS BASED ON PHOTOPOLYMERIZED STAR-SHAPED POLY(ETHYLENE GLYCOL)-co-POLY(ε-CAPROLACTONE) MACROMERS

ZHAO Sanping; FENG Zengguo

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SYNTHESIS AND CHARACTERIZATION OF BIODEGRADABLE HYDROGELS BASED ON PHOTOPOLYMERIZED STAR-SHAPED POLY(ETHYLENE GLYCOL)-co-POLY(ε-CAPROLACTONE) MACROMERS

Research Article | 更新时间：2021-03-19

- SYNTHESIS AND CHARACTERIZATION OF BIODEGRADABLE HYDROGELS BASED ON PHOTOPOLYMERIZED STAR-SHAPED POLY(ETHYLENE GLYCOL)-co-POLY(ε-CAPROLACTONE) MACROMERS
- Acta Polymerica Sinica Issue 2, Pages: 201-206(2003)
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- Published：20 April 2003，
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ZHAO Sanping, FENG Zengguo. SYNTHESIS AND CHARACTERIZATION OF BIODEGRADABLE HYDROGELS BASED ON PHOTOPOLYMERIZED STAR-SHAPED POLY(ETHYLENE GLYCOL)-co-POLY(ε-CAPROLACTONE) MACROMERS. [J]. Acta Polymerica Sinica (2):201-206(2003)
DOI：

ZHAO Sanping, FENG Zengguo. SYNTHESIS AND CHARACTERIZATION OF BIODEGRADABLE HYDROGELS BASED ON PHOTOPOLYMERIZED STAR-SHAPED POLY(ETHYLENE GLYCOL)-co-POLY(ε-CAPROLACTONE) MACROMERS. [J]. Acta Polymerica Sinica (2):201-206(2003) DOI：

摘要

以辛酸亚锡为催化剂

通过星型聚乙二醇 (PEG)引发ε-己内酯 (CL)开环聚合

制备了PEG-b-PCL嵌段共聚物

进一步以丙烯酸酯封端

合成了3种水溶性大分子单体 .以 2

2-二甲氧基-2-苯基苯乙酮为引发剂

在紫外光作用下

大分子单体在水中由于胶束的形成能够迅速聚合形成水凝胶 .利用1H-NMR、FTIR、DSC、TGA、ESEM、凝胶含量、溶胀比等分析测试手段对大分子单体及其形成的水凝胶进行了表征 .结果表明

干胶迅速吸水而达到溶胀平衡

水凝胶具有较大的溶胀比和高的水含量 ;随着PEG臂数的增加

干胶的熔融峰顶温度下降

凝胶的溶胀比减小;ESEM图片上清晰地表明水凝胶的网络结构.

Abstract

The star-shaped block copolymers were prepared by ring-opening polymerization of ε-caprolactone in the presence of multiarm PEG using stannous octoate as a catalyst．Based on these star-shaped PEG-b-PCL

soluble macromers terminated with acrylate groups were synthesized．The amphiphilic nature of the macromers causes them to assume a micellar conformation in water

which enables them to undergo rapid polymerization using photoinitiator under UV radiation．Macromers and their hydrogels were characterized by 1H-NMR、FTIR、DSC、TGA、ESEM、gel content and swelling ratio etc．It is shown that dried gels absorb water rapidly

and hydrogels have high swelling ratio and water content．With the increase of arm numbers of PEG

the temperature of the melting peak of dried gels and the swelling ratio of hydrogels decrease；The photograph of ESEM indicated clearly the network structure of the hydrogel．

关键词

星型开环聚合胶束溶胀比网络结构

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The First Hospital, Jilin University

State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences

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