We synthesized poly(maleic anhydride-co-methyl vinyl ether) (PMAMVE) gels and functionalized them to form hydroxamic acid functional groups. We evaluated the performance of the gels in decomposing dimethyl nitrophenyl phosphate (DMNP). We monitored organophosphate degradation kinetics as a function of gel chemical composition, cross-linking density, and solution pH and applied Thiele modulus analysis to determine the importance of transport phenomena related to the particulate gel size. The decomposition of DMNP in the maleic anhydride gels followed pseudo-first-order kinetics for all studied conditions. The performance was influenced by the spatial confinement of the hydroxamic acid groups inside the gel. The gels made of PMAMVE copolymers modified with hydroxamic acid offer a robust new system with high degradation efficiency, scalability, and preparation simplicity.

中文翻译：

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含有异羟肟酸的功能性凝胶可降解水溶液中的有机磷酸酯

我们合成了聚（马来酸酐-共-甲基乙烯基醚）（PMAMVE）凝胶并将它们官能化以形成异羟肟酸官能团。我们评估了凝胶在分解二甲基硝基苯基磷酸酯 (DMNP) 方面的性能。我们监测了作为凝胶化学成分、交联密度和溶液 pH 值的函数的有机磷酸盐降解动力学，并应用蒂勒模量分析来确定与颗粒凝胶尺寸相关的传输现象的重要性。在所有研究条件下，DMNP 在马来酸酐凝胶中的分解遵循准一级动力学。性能受凝胶内异羟肟酸基团的空间限制影响。由异羟肟酸改性的 PMAMVE 共聚物制成的凝胶提供了一种强大的新系统，具有高降解效率、可扩展性、