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首页> 外文期刊>Journal of Polymer Science, Part B. Polymer Physics >Study of the effect of poly(vinyl alcohol) concentration on the gelation point of poly(vinyl alcohol) poly(acrylic acid) semi-IPN systems as determined by viscoelastic measurements
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Study of the effect of poly(vinyl alcohol) concentration on the gelation point of poly(vinyl alcohol) poly(acrylic acid) semi-IPN systems as determined by viscoelastic measurements

机译：粘弹性法测定聚乙烯醇浓度对聚乙烯醇聚丙烯酸半IPN体系胶凝点影响的研究

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摘要

We report on the determination of the gelation point of semi-interpenetrating polymer networks (semi-IPNs) composed of poly(vinyl alcohol) (PVA) and poly(acrylic acid) (PAAc) formed by a sequential method. The evolution of the viscoelasticity during the gelation reaction of acrylic acid (AAc) in solutions of PVA has been monitored through the sol-gel transition with dynamic mechanical experiments. The gelation time of the system increased with PVA concentration; however, the molecular structure of the gel, composed of swollen clusters, is rather independent of the presence of PVA. (c) 2005 Wiley Periodicals, Inc.
机译：我们报告确定由顺序方法形成的由聚乙烯醇（PVA）和聚丙烯酸（PAAc）组成的半互穿聚合物网络（semi-IPNs）的胶凝点的确定。丙烯酸（AAc）在PVA溶液中的胶凝反应过程中的粘弹性演变已通过动态力学实验通过溶胶-凝胶转变进行了监测。随着PVA浓度的增加，体系的胶凝时间增加。然而，由溶胀簇组成的凝胶的分子结构相当独立于PVA的存在。 （c）2005年Wiley Periodicals，Inc.

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