聚(N-异丙基丙烯酰胺)/石墨烯纳米复合水凝胶的制备及其溶胀性能

材料科学与工程学报, 2015, 33(1): 22-40.

聚(N-异丙基丙烯酰胺)/石墨烯纳米复合水凝胶的制备及其溶胀性能

范萍 ^1, , 陈秀萍 ^2, , 黄方麟 ^3, , 陈枫 ^4, , 杨晋涛 ^5, , 钟明强 ^6,

1.浙江工业大学材料科学与工程学院,浙江杭州310014

2.浙江工业大学材料科学与工程学院,浙江杭州310014

3.浙江工业大学材料科学与工程学院,浙江杭州310014

4.浙江工业大学材料科学与工程学院,浙江杭州310014

5.浙江工业大学材料科学与工程学院,浙江杭州310014

6.浙江工业大学材料科学与工程学院,浙江杭州310014

基金项目: National Natural Science Foundation of China (51303158),Natural Science Foundation of Zhejiang Province (LQ12E03004) and The Opening Foundation of Zhejiang Provincial Top Key Discipline (G9713101002)

关键词：石墨烯 , 水凝胶 , N-异丙基丙烯酰胺 , 温敏性

Preparation, Structure and Swelling Behavior of Poly(N-iospropylacryamide)/graphene Nanocomposite Hydrogel

Keywords： graphene , poly (N-isopropylacrylamide) , hydrogel , temperature sensitivity

聚N-异丙基丙烯酰胺(Poly N-isopropylacrylamide,PNIPA)是一种能对外界温度产生响应的智能水凝胶.但是它的平衡溶胀率和响应速度不高,其应用受到一定的限制.本文通过原位聚合法制备了聚N-异丙基丙烯酰胺/氧化石墨烯(GO)水凝胶复合材料.并采用化学还原法对其还原获得了PNIPA/石墨烯复合水凝胶.通过傅里叶红外光谱(FTIR)和扫描电镜(SEM)分别表征了凝胶的化学结构和内部形态.测定了凝胶的平衡溶胀率、温度响应性及其在高温(45℃)时的消溶胀性能.研究结果表明:石墨烯的加入使凝胶的多孔结构增加,水释放通道增加,因而PNIPA/石墨烯水凝胶显示出更高的平衡溶胀率,更快的消溶胀速度以及更敏感的温度响应性.

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