Preparation and Characterization of Interpenetrating Polymer Hydrogels Based on Poly(acrylic acid) and Poly(vinyl alcohol)
Preparation and Characterization of Interpenetrating Polymer Hydrogels Based on Poly(acrylic acid) and Poly(vinyl alcohol)
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DOI：
10.1002/masy.200550420
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发表时间：
2005-03
影响因子：
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通讯作者：
R. Hernández;D. López;E. Pérez;C. Mijangos
中科院分区：
文献类型：
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作者：
R. Hernández;D. López;E. Pérez;C. Mijangos
采用序贯法制备了聚乙烯醇（PVA）和聚丙烯酸（PAAc）互穿聚合物水凝胶（IPHs）：在PVA存在下，丙烯酸与N， N'-亚甲基双丙烯酰胺在水溶液中交联共聚形成交联PAAc链。冻融循环（F-T循环）的应用导致在合成的PAAc水凝胶中形成PVA水凝胶。根据固态13c - nmr的结构特征，评价了所制备的ips的溶胀性能和粘弹性。
Interpenetrating polymer hydrogels (IPHs) of Poly (vinyl alcohol) (PVA) and Poly (acrylic acid) (PAAc) have been prepared by a sequential method: crosslinked PAAc chains were formed in aqueous solution by crosslinking copolymerization of acrylic acid and N, N'-methylenebisacrylamide in the presence of PVA. The application of freezing-thawing cycles (F-T cycles) leads to the formation of a PVA hydrogel within the synthesized PAAc hydrogel. The swelling and the viscoelastic properties of the prepared IPHs were evaluated on the basis of the structural features obtained from solid state 13 C-NMR spectroscopy.