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首页> 外文期刊>Journal of Applied Polymer Science >Preparation and characterization of a novel responsive hydrogel with a beta-cyclodextrin-based macromonomer
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Preparation and characterization of a novel responsive hydrogel with a beta-cyclodextrin-based macromonomer

机译：基于β-环糊精的大分子单体新型响应水凝胶的制备与表征

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摘要

Based on a combination of poly(N-isopropylacrylamide), which could respond to an external temperature, and beta-cyclodextrin (beta-CD), which could form a molecular inclusion complex, a novel hydrogel, having both thermal and pH sensitivities and containing beta-CD and N-isopropylacrylamide (NIPA) segments, was synthesized. For the incorporation of beta-CD into the polymer network, a macromonomer was prepared first by the reaction of a beta-CD-based polymer with maleic anhydride in dimethylformamide and then by copolymerization with NIPA in an aqueous solution. Elemental analysis, IR spectroscopy, differential scanning calorimetry, and swelling measurements were employed for the characterization of the hydrogel chain structure and its physical properties. With methyl orange as a model compound in inclusion tests, it was found that the hydrogel not only possessed a remarkable supramolecular inclusion ability (with respect to that of the small molecule cyclodextrin) but also could sensitively respond to various external stimuli, including the temperature, pH, and ionic strength. (C) 2003 Wiley Periodicals, Inc. [References: 21]
机译：基于可以响应外部温度的聚（N-异丙基丙烯酰胺）和可以形成分子包合物的β-环糊精（β-CD）的组合，是一种新型的水凝胶，具有热敏性和pH敏感性，并且含有合成了β-CD和N-异丙基丙烯酰胺（NIPA）链段。为了将β-CD掺入聚合物网络，首先通过使基于β-CD的聚合物与马来酸酐在二甲基甲酰胺中反应，然后通过与NIPA在水溶液中共聚来制备大分子单体。使用元素分析，红外光谱，差示扫描量热法和溶胀测量来表征水凝胶链结构及其物理性质。用甲基橙作为模型化合物进行包合试验，发现水凝胶不仅具有卓越的超分子包合能力（相对于小分子环糊精），而且还可以对各种外部刺激（包括温度， pH值和离子强度。 （C）2003 Wiley Periodicals，Inc. [参考：21]

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