肿胀 的
自愈水凝胶
高分子化学
纤维素
聚乙烯醇
水溶液
化学工程
聚电解质
材料科学
膨胀能力
化学
离子强度
丙烯酸
动力学
聚合物
核化学
复合材料
有机化学
共聚物
工程类
物理
量子力学
作者
Jia Liu,Qian Li,Yuan Su,Qinyan Yue,Baoyu Gao
标识
DOI:10.1016/j.carbpol.2014.02.073
摘要
A novel wheat straw cellulose-g-poly(potassium acrylate)/polyvinyl alcohol (WSC-g-PKA/PVA) semi-interpenetrating polymer networks (semi-IPNs) hydrogel was prepared by polymerizing wheat straw and an aqueous solution of acrylic acid (AA), and further semi-interpenetrating with PVA occurred during the chemosynthesis. The swelling and deswelling properties of WSC-g-PKA/PVA semi-IPNs hydrogel and WSC-g-PKA hydrogel were studied and compared in various pH solutions, salt solutions, temperatures, particle sizes and ionic strength. The results indicated that both hydrogels had the largest swelling capacity at pH = 6, and the effect of ions on the swelling of hydrogels was in the order: Na+ > K+ > Mg2+ > Ca2+. The Schott's pseudo second order model can be effectively used to evaluate swelling kinetics of hydrogels. Moreover, the semi-IPNs hydrogel had improved swelling–deswelling properties compared with that of WSC-g-PKA hydrogel.
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