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壳聚糖/DMAPMA/PVA复合凝胶的制备及其性能研究
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Abstract:
本研究以壳聚糖(CS)/N-(3-(二甲氨基)丙基)甲基丙烯酰胺(DMAPMA)聚合物纳米颗粒(CP4NP)、聚乙烯醇(PVA)为原料，通过冻融循环法成功制备了CS/DMAPMA/PVA复合凝胶((CP4NP)vPG)。SEM、XRD和FT-IR表征分析表明，CP4NP显著影响凝胶的结晶性和微观结构，并在吸附孔雀石绿(MG)时表现出16.98 mg/g的最大吸附量，吸附动力学以物理吸附为主。此外，该凝胶具有良好的自愈合能力和pH/温度响应性，实现了溶胶–凝胶可逆转变。
In this study, CS/DMAPMA/PVA composite gels (CP4NP) were prepared by freeze-thaw cycling method using chitosan (CS)/N-(3-(dimethylamino)propyl)methacrylamide (DMAPMA) polymer nanoparticles (CP4NP), polyvinyl alcohol ((PVA)vPG). SEM, XRD, and FT-IR characterization analyses showed that CP4NP significantly affected the crystallinity and microstructure of the gel and exhibited a maximum adsorption of 16.98 mg/g for the adsorption of malachite green (MG), and the adsorption kinetics was dominated by physisorption. In addition, the gel showed good self-healing ability and pH/temperature responsiveness, realizing a reversible sol-gel transition.
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