| PAAm/CMC-Ag纳米复合水凝胶的制备表征及溶胀动力学研究 |
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| 引用本文： | 魏清渤,王俏,宋延卫,张玉琦,马宏宁,李丁.PAAm/CMC-Ag纳米复合水凝胶的制备表征及溶胀动力学研究[J].延安大学学报(自然科学版),2011,30(1):53-57. |
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| 作者姓名： | 魏清渤 王俏 宋延卫 张玉琦 马宏宁 李丁 |
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| 作者单位： | 陕西省反应工程重点实验室,延安大学化学与化工学院,陕西延安,716000 |
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| 基金项目： | 延安大学科研启动专项基金，延安大学科技创新计划项目 |
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| 摘 要： | 以N,N-亚甲基双丙烯酰胺(N,N-MBA)为交联剂,过硫酸钾(KPS)为引发剂,合成了聚丙烯酰胺(AAm)-羧甲基纤维素钠盐(CMC)半互穿网络水凝胶.通过傅里叶红外光谱纳米复合水凝胶PAAm/CMC-Ag的结构.紫外可见光谱研究表明,Ag纳米粒子的表面等离子体吸收峰在450 nm范围.溶胀动力学表明,PAAm/CM...
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| 关 键 词： | PAAm/CMC-Ag水凝胶 银纳米粒子 溶胀行为 |
Preparation, Characterization and Swelling Kinetics of PAAm/CMC-Ag Nanocomposite Hydrogels |
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| WEI Qing-Bo,WANG QIAO,SONG Yan-Wei,ZHANG Yu-Qi,MA Hong-Ning,LI DING.Preparation, Characterization and Swelling Kinetics of PAAm/CMC-Ag Nanocomposite Hydrogels[J].Journal of Yan'an University(Natural Science Edition),2011,30(1):53-57. |
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| Authors: | WEI Qing-Bo WANG QIAO SONG Yan-Wei ZHANG Yu-Qi MA Hong-Ning LI DING |
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| Affiliation: | (Key Laboratory of Chemical Reaction Engineering of Shaanxi Province,College of Chemistry ＆Chemical Engineering,Yan an University,Yan an 716000,China) |
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| Abstract: | A hydrogel with semi-interpenetrating networks（semi-IPN） composed of polyacrylamide and carboxymethylcellulose sodium（PAAm/CMC） was synthesized by a cross-linking co-polymerization route in the presence of N,N-methylene bisacrylamide（N,N-MBA） and potassium persulfate（KPS）.The infrared spectra（FT-IR） and were adopted to characterize the structure of PAAm/CMC-Ag nanocomposite hydrogels.UV-vis studies apparently showed the characteristic surface plasmon band was situated at 450 nm due to existence of Ag nanoparticles within the hydrogel matrix.The swelling kinetics investigations demonstrated that the equilibrium swelling（Qe） of the PAAm/CMC-Ag nanocomposite hydrogels depended on the content of the CMC,and the Qe values were reduced with increasing the CMC contents,which was in agreement with maximal theoretical water contents S∞ fitted by swelling kinetic data.The swelling mechanism belonged to a non-Fickian mode for the PAAm/CMC-Ag nanocomposite hydrogels. |
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| Keywords: | PAAm/CMC-Ag hydrogels Ag nanoparticles swelling behavior |
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