| pH敏感性P(AAm-co-AA)半互穿网络水凝胶的制备、表征及溶胀动力学研究 |
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| 引用本文： | 魏清渤,王俏,付峰,宋延卫,罗延龄,仁佳琪. pH敏感性P(AAm-co-AA)半互穿网络水凝胶的制备、表征及溶胀动力学研究[J]. 化学与生物工程, 2011, 28(3): 27-31. DOI: 10.3969/j.issn.1672-5425.2011.03.008 |
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| 作者姓名： | 魏清渤 王俏 付峰 宋延卫 罗延龄 仁佳琪 |
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| 作者单位： | 1. 延安大学化学与化工学院陕西省化学反应工程重点实验室,陕西,延安,716000
2. 陕西师范大学化学与材料科学学院,陕西,西安,710062 |
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| 基金项目： | 陕西省教育厅专项科研基金资助项目，延安大学科研启动基金资助项目，延安大学科技创新训练计划项目 |
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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,采用自由基交联共聚法合成了具有pH敏感性的半互穿网络水凝胶聚丙烯酰胺-co-丙烯酸[P(AAm-co-AA)],通过傅立叶红外光谱、差热分析研究了水凝胶的结构及热稳定性.水凝胶的溶胀研究表明,随着缓冲溶液pH值的增大平衡溶胀率增大;在不同...
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| 关 键 词： | P(AAm-co-AA)水凝胶 pH敏感性 溶胀行为 |
Study on Preparation, Characterization and Swelling Kinetics of P(AAm-co-AA) pH-Sensitive Semi-IPN Hydrogel |
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| WEI Qing-bo,WANG Qiao,FU Feng,SONG Yan-wei,LUO Yan-ling,REN Jia-qi. Study on Preparation, Characterization and Swelling Kinetics of P(AAm-co-AA) pH-Sensitive Semi-IPN Hydrogel[J]. Chemistry & Bioengineering, 2011, 28(3): 27-31. DOI: 10.3969/j.issn.1672-5425.2011.03.008 |
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| Authors: | WEI Qing-bo WANG Qiao FU Feng SONG Yan-wei LUO Yan-ling REN Jia-qi |
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| Affiliation: | 1 (1.Shanxi Key Laboratory of Chemical Reaction Engineering,College of Chemistry & Chemical Engineering,Yan′an University,Yan′an 716000,China;2.School of Chemistry and Materials Science,Shanxi Normal University,Xi′an 710062,China) |
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| Abstract: | A pH-sensitive hydrogel with semi-interpenetrating networks(semi-IPN) composed of co-polymer of acrylamide and acrylic acid [P(AAm-co-AA)] 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 structural and thermal properties of semi-IPN hydrogels were analyzed by infrared spectra(FTIR) and differential thermal analysis.The equilibrium swelling ratio(Qe) increased with the pH value,and the maximum theoretical water contents S∞ was in agreement with the swelling experiment data.The swelling mechanism belonged to a Fickian mode for the P(AAm-co-AA) hydrogels in pH=1.47 buffer solutions.However,the dynamic swelling behavior of P(AAm-co-AA) hydrogels belonged to non-Fickian mode,in pH=11.04 buffer solutions. |
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| Keywords: | P(AAm-co-AA) hydrogel pH sensitivity swelling behavior |
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