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OALib Journal期刊
ISSN: 2333-9721
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pnipaam共聚水凝胶的微波合成和性能
Keywords: 有机高分子材料,微波辐射,孔结构
Abstract:
？用微波辐射法合成了pnipaam共聚水凝胶,表征和测定了孔隙结构、形貌、溶胀和退溶胀速度.结果表明:与水热法相比,用微波辐射法合成的共聚水凝胶孔结构发达;在低于lcst下的溶胀率可达538,远远超过普通水浴法所得的共聚水凝胶的溶胀率;用微波辐射法所合成的pna系列水凝胶具有比pnipaam更高的溶胀和退溶胀速度.微波辐射条件下特殊的“热效应”和“非热效应”有助于合成具有多孔结构网络的共聚水凝胶.这种孔结构有利于水分子的储存和扩散,提高了它的平衡溶胀率和水凝胶对环境温度的响应速度.
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