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| 1 | Thermosensitive Poly(N-isopropylacrylamide-co-acrylonitrile) Hydrogels with Rapid Response显示文摘Acrylonitrile (AN) was copolymerized with N-isopropylacrylamide (NIPA) to synthesize thermosensitive hy-drogels, and the on-off switch behavior of poly(NIPA-co-AN) hydrogels with different fraction of hydrophobic compo-nent (AN) was investigated. It is found that the lower critical solution temperature (LCST), the swelling ratio at certain temperature and the reswelling rate of poly(NIPA-co-AN) hydrogels decreased as AN unit fraction in copolymers in-creased. In order to improve the responsive rate of poly(NIPA-co-AN) hydrogels, they were further treated by surface crosslinking using N, N′-methylene bisacrylamide (BIS) as a crosslinking agent. The swelling and deswelling behaviors of these copolymers were compared with those of the untreated hydrogels. The results indicated that the responsive rate of poly(NIPA-co-AN) hydrogel was improved by surface crosslinking. The resulting hydrogels bearing cyano groups with fast response have potential applications in the field of drug-controlled release and immobilization of biomolecules. | 黄健 黄志明 包永忠 翁志学 | 2006 | Chinese Journal of Chemical Engineering2006，14，1： | 3 |
| 2 | 基于吸附-扩散机理研究钒离子透膜传质过程(Ⅱ)——钒离子透膜传质实验研究显示文摘吸附-扩散模型基于离子交换膜固定电荷理论,涉及离子选择性系数和透膜扩散通量,通过三种离子交换膜内VO2+吸附平衡和透膜扩散实验,由吸附-扩散模型计算钒离子透膜扩散系数,揭示钒离子透膜传质过程。膜面FT-IR红外谱揭示基膜内不饱和键及RSO3-交换能力是影响膜稳定性和VO2+膜内吸附量主要因素,膜面光滑、平整能有效地降低VO2+吸附,抑制膜内水吸附和VO2+透膜扩散。该模型能较真实揭示钒离子透膜传质过程,可快速有效的筛选电池隔膜,并指导高性能钒电池隔膜制备。 | 陈金庆 吕宏凌 王保国 尹海涛 | 2011 | 当代化工2011，40，9： | 1 |
| 3 | IPAAm凝胶在丙酮水溶液中溶胀行为的关联与预报(英文)显示文摘基于Maurer和Prausnitz的凝胶相平衡条件,建立了凝胶的溶胀模型.模型假设凝胶是以凝胶组分及凝胶吸收的溶液为核心,以弹性半渗透膜为壳的复合体.并采用UNIQUAC方程计算凝胶相及与之共存液相的Gibbs过剩自由能,采用“phantomnetwork”理论计算凝胶的弹性自由能,采用“自由体积”计算分子的尺度效应.同时以N-异丙基丙烯酰胺(IPAAm)为单体合成了IPAAm凝胶.研究了25℃时IPAAm凝胶在丙酮水溶液中的溶胀行为,并测定了丙酮在胶体相和与之共存液相中的分配,以检验模型的关联与预报能力.结果表明,模型预报的单体总量和交联剂浓度对凝胶溶胀的影响与实验符合得很好.而且凝胶溶胀时,能很好地预测丙酮在两相中的分配,表明模型具有很好的关联和预报能力. | 许小平 Andreas Hüther Gerd Maurer | 2004 | 物理化学学报2004，20，3： | 0 |
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