Synthesis and Characterization of Superporous Hydrogels by Foaming Dispersion Copolymerization

Li-hua WANG; Song-bai LIN; Ke-ping WANG; Na-na WANG

doi:10.14028/j.cnki.1003-3726.2011.05.005

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Synthesis and Characterization of Superporous Hydrogels by Foaming Dispersion Copolymerization

更新时间：2022-09-18

- Synthesis and Characterization of Superporous Hydrogels by Foaming Dispersion Copolymerization
- Polymer Bulletin Vol. 24, Issue 5, Pages: 76-81(2011)
- 作者机构：
  
  1.华侨大学材料科学与工程学院，泉州　362021
  2.黎明职业大学，泉州　362000
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2011.05.005
  CLC：
- Published：2011-05，
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Li-hua WANG, Song-bai LIN, Ke-ping WANG, Na-na WANG. Synthesis and Characterization of Superporous Hydrogels by Foaming Dispersion Copolymerization. [J]. Polymer Bulletin 24(5):76-81(2011)
DOI：

Li-hua WANG, Song-bai LIN, Ke-ping WANG, Na-na WANG. Synthesis and Characterization of Superporous Hydrogels by Foaming Dispersion Copolymerization. [J]. Polymer Bulletin 24(5):76-81(2011) DOI： 10.14028/j.cnki.1003-3726.2011.05.005.

摘要

采用泡沫分散聚合法

以自制的4-乙酰基丙烯酰乙酸乙酯( AAEA) 和2-丙烯酰胺基-2-甲基丙磺酸 ( AMPS) 、丙烯酸( AA) 为单体

制备了具有相互贯穿超大孔结构的快速响应型水凝胶。结果表明

引发剂和交联剂用量分别为2.5 %和0.6%时平衡溶胀度最高;当以饱和碳酸钠溶液为发泡剂时制得的凝胶孔洞均匀贯穿;凝胶经无水乙醇处理后

其表面孔洞的形成增大了与溶液的接触面积;该凝胶20s 内即可达到溶胀/消溶胀平衡具有良好的离子强度敏感性;在蒸馏水和NaCl 溶液之间具有良好的反复溶胀/ 消溶胀性能。

Abstract

A series of novel rapidly responsive P( AAEA/AMPS/AA) hydrogels with interco nnected superpo rous structure were synthesi zed by foaming dispersion copolyme rization using 4-acetyl acryloyl ethyl acetate ( AAEA)

2-acrylamide-2-methylpro panesulfonic acid ( AMPS) and acrylic acid ( AA) as monomers. Results showed that when the mole fraction of initiator and that of crosslinker were 2.5 % and 0.6 % respectively

the equilibrium swelling ratios were highest. The hydrogels had uniform and interconnected porous structure when using the saturated solution of sodium carbo nate ( Na

) as foaming agents

and pores formed in the surface of hydrogel could increase the contact area between hydrogels and solvent after being treated by ethanol. The hydrogels could reach their swelling and deswelling equilibrium within 20s

and they had favo rable ion sensitivity and repeatability be tween distilled water and NaCl solution.

关键词

水凝胶泡沫分散聚合快速响应离子敏感

Keywords

HydrogelFoaming dispersion copolymerizationRapid responseIon sensitivity

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