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中文摘要：
通过自由基聚合方法合成聚丙烯酰胺（PAAM）水凝胶、丙烯酰胺（AAM）与甲基丙烯酸（MAA）的不同摩尔比的P（AAM-co-MAA）水凝胶,并对这些水凝胶的形貌和膨胀性能及pH敏感性能进行研究。结果表明,相比PAAM水凝胶,P（AAM-co-MAA）水凝胶的膨胀性能提高,但当AAM与MAA摩尔比为13∶2时,P（AAM-co-MAA）水凝胶具有更好的膨胀性和pH敏感性。这些水凝胶的特殊性能使它们有望应用于药物的缓控释放方面。
英文摘要：
The PAAM hydroges, P（AAM-co-MAA） hydrogels of different MAA and MAA, hydrogel were perapared by free radical polymerization methods. The morphology characterization, swelling ability and pH-sensitivity of these hydrogels were studied. The results showed that the（AAM-co-MAA） hydrogel exhibited better swelling capability and pH sensitivity than that of the PAAM. The（AAM-co-MAA） hydrogel with reasonable ratio（AAM∶MAA=13∶2） had best swelling capability and pH sensitivity. The hydrogel with these special properties was expected to be applied to the field of drug controlled release.
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