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首页> 外文期刊>Journal of Applied Polymer Science >Preparation and pH-Responsive Performance of Silane-Modified Poly(methylacrylic acid)
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Preparation and pH-Responsive Performance of Silane-Modified Poly(methylacrylic acid)

机译：硅烷改性聚甲基丙烯酸的制备及其pH响应性能

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摘要

The poly(methylacrylic acid) modified by silane [poly(methylacrylic acid-co-vinyl triethoxylsilane) (PMAA)] was prepared via free-radical polymerization with different mass ratios of methylacrylic acid to vinyl triethoxylsilane (VTES). The swelling performance of the prepared PMAA in different solutions with various pH values, salt species (NaCl and CaCl_2), and concentrations was investigated in detail. The results indicated that the introduction of silane boosted the stability of the obtained PMAA in aqueous solutions in the presence of an increased quantity of VTES additive. Meanwhile, the different swelling ratios of PMAA in various pH solutions showed a high pH responsivity. In addition, we found that when the PMAA underwent a number of swelling-deswelling cycles, it demonstrated the good reversibility properties when the pH value of the swelling medium was changed from 9.0 to 1.4. Moreover, the swelling mechanism of PMAA in different solutions with different pH values was investigated.
机译：通过自由基聚合以不同的甲基丙烯酸与乙烯基三乙氧基硅烷（VTES）的质量比，制备了由硅烷[聚（甲基丙烯酸-共乙烯基三乙氧基硅烷）（PMAA）]改性的聚（甲基丙烯酸）。详细研究了制备的PMAA在不同溶液中的溶胀性能，这些溶液具有各种pH值，盐类（NaCl和CaCl_2）和浓度。结果表明，在增加量的VTES添加剂存在下，硅烷的引入提高了所得PMAA在水溶液中的稳定性。同时，不同pH溶液中PMAA的不同溶胀率显示出较高的pH响应度。此外，我们发现当PMAA经历多个溶胀-溶胀循环时，当溶胀介质的pH值从9.0变为1.4时，它表现出良好的可逆性。此外，研究了PMAA在不同pH值的不同溶液中的溶胀机理。

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