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Synthesis of a self-healable and pH responsive hydrogel based on an ionic polymer/clay nanocomposite

机译：基于离子型聚合物/粘土纳米复合材料的自修复和pH响应水凝胶的合成

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This investigation reports the preparation of a pH responsive self-healing nanocomposite hydrogel based on the in situ polymerization of 2-(acryloyloxy) ethyl trimethylammonium chloride and acrylic acid using N,N'-methylenebisacrylamide as a crosslinker and ammonium persulfate (APS) as a thermal initiator in the presence of soluble starch and organically modified montmorillonite (OMMT). The hydrogel was characterized using FTIR, SEM and TEM analyses. The influence of different parameters in swelling was investigated. The self-healing ability of the hydrogel was measured in different pH media and it was observed that it can show self-healing ability in physiological pH (pH = 7.4), in acidic pH (pH = 1.2) and in saline solution. This developed hydrogel showed excellent swelling ratio, mechanical strength, and elasticity. The hydrogel exhibited modulus values (G', G '') in the range of 10(2) Pa.
机译：这项研究报告了基于N，N'-亚甲基双丙烯酰胺作为交联剂和过硫酸铵（APS）作为原位聚合2-（丙烯酰氧基）乙基三甲基氯化铵和丙烯酸的pH响应型自修复纳米复合水凝胶的制备。可溶性淀粉和有机改性蒙脱石（OMMT）存在下的热引发剂。使用FTIR，SEM和TEM分析来表征水凝胶。研究了不同参数对溶胀的影响。在不同的pH介质中测量了水凝胶的自愈能力，观察到它在生理pH（pH = 7.4），酸性pH（pH = 1.2）和盐水溶液中均表现出自愈能力。这种发达的水凝胶显示出极好的溶胀率，机械强度和弹性。水凝胶的模量值（G'，G''）在10（2）Pa范围内。

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