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首页> 外文期刊>Journal of Applied Polymer Science >Swelling behavior of semi-interpenetrating polymer network hydrogels composed of poly(vinyl alcohol) and poly(acrylamide-co-Sodium methacrylate)
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Swelling behavior of semi-interpenetrating polymer network hydrogels composed of poly(vinyl alcohol) and poly(acrylamide-co-Sodium methacrylate)

机译：由聚乙烯醇和聚丙烯酰胺-共聚甲基丙烯酸钠组成的半互穿聚合物网络水凝胶的溶胀行为

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摘要

Interpenetrating polymer network (IPN) hydrogels based on poly(vinyl alcohol) (PVA) and poly(acryl-amide-co-sodium methacrylate) poly(AAm-co-SMA) were prepared by the semi IPN method. These IPN hydrogels were prepared by polymerizing aqueous solution of acrylamide and sodium methacrylate, using ammonium persulphate/N,N,N-1,N-1-tetramethylethylenediamine (APS/TMEDA) initiating system and N,N-1-methylene-bisacrylamide (MBA) as a crosslinker in the presence of a host polymer, poly(vinyl alcohol). The influence of reaction conditions, such as the concentration of PVA, sodium methacrylate, crosslinker, initiator, and reaction temperature, on the swelling behavior of these IPNs was investigated in detail. The results showed that the IPN hydrogels exhibited different swelling behavior as the reaction conditions varied. To verify the structural difference in the IPN hydrogels, scanning electron microscopy (SEM) was used to identify the morphological changes in the IPN as the concentration of crosslinker varied. In addition to MBA, two other crosslinkers were also employed in the preparation of IPNs to illustrate the difference in their swelling phenomena. The swelling kinetics, equilibrium water content, and water transport mechanism of all the IPN hydrogels were investigated. IPN hydrogels being ionic in nature, the swelling behavior was significantly affected by environmental conditions such as temperature, ionic strength, and pH of the swelling medium. Further, their swelling behavior was also examined in different physiological bio-fluids. (c) 2005 Wiley Periodicals, Inc.
机译：采用半IPN法制备了基于聚乙烯醇（PVA）和聚丙烯酰胺-甲基丙烯酸钠共聚物（AAm-co-SMA）的互穿聚合物网络（IPN）水凝胶。这些IPN水凝胶是通过使用过硫酸铵/ N，N，N-1，N-1-四甲基乙二胺（APS / TMEDA）引发体系和N，N-1-亚甲基-双丙烯酰胺（ MBA）作为交联剂，在主体聚合物聚乙烯醇的存在下。详细研究了反应条件（如PVA的浓度，甲基丙烯酸钠，交联剂，引发剂和反应温度）对这些IPN溶胀行为的影响。结果表明，随着反应条件的变化，IPN水凝胶表现出不同的溶胀行为。为了验证IPN水凝胶的结构差异，使用扫描电子显微镜（SEM）来确定随着交联剂浓度的变化IPN的形态变化。除了MBA以外，在制备IPN时还使用了其他两种交联剂来说明其膨胀现象的差异。研究了所有IPN水凝胶的溶胀动力学，平衡水含量和输水机理。 IPN水凝胶本质上是离子性的，其溶胀行为受到温度，离子强度和溶胀介质的pH等环境条件的显着影响。此外，还在不同的生理生物流体中检查了它们的溶胀行为。 （c）2005年Wiley Periodicals，Inc.

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