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Abnormal pH sensitivity of polyacrylate-polyurethane hydrogels

机译:聚丙烯酸酯-聚氨酯水凝胶的pH异常敏感性

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摘要

A series of polyacrylate-polyurethane networks (PUA) were synthesized and their pH-sensitive behaviors were studied. An unexpected swelling-deswelling behavior was observed as the composition changed. Dynamic mechanical thermal analysis and differential scanning calorimetry were used to initially explain this phenomenon. By applying small-angle X-ray scattering and wide-angle X-ray diffraction simultaneously, a specific multiphase-transition process could be clearly detected, which made the mechanism of the observed abnormal pH sensitivity more explicit. (C) 1998 John Wiley & Sons, Inc. [References: 21]
机译:合成了一系列聚丙烯酸酯-聚氨酯网络(PUA),并研究了它们的pH敏感行为。随着组成的改变,观察到了意外的溶胀-溶胀行为。动态机械热分析和差示扫描量热法最初被用来解释这种现象。通过同时应用小角X射线散射和广角X射线衍射,可以清楚地检测到特定的多相转变过程,这使观察到的异常pH敏感性的机理更加明确。 (C)1998 John Wiley&Sons,Inc. [参考:21]

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