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首页> 外文期刊>Journal of Applied Polymer Science >Cellular PVA hydrogels produced by freeze/thawing
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Cellular PVA hydrogels produced by freeze/thawing

机译：冷冻/解冻产生的细胞PVA水凝胶

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摘要

Cellular poly(vinyl alcohol) (PVA) hydrogels that exhibit enhanced swelling kinetics from an initial dry state were prepared by freezing and thawing techniques in the presence of NaCl. Gels that were dried immediately after preparation demonstrated a dual-sorption effect upon swelling. Gels that were exposed to a 10-day washing period to remove NaCl and excess PVA chains before drying showed an increased initial rate of swelling and overall water content. Freeze/thawed, cellular PVA gels showed overall enhanced swelling with increased mechanical strength over traditional gels prepared by chemical or irradiative crosslinking techniques. (C) 2000 John Wiley & Sons, Inc. [References: 5]
机译：通过在NaCl存在下的冷冻和解冻技术，制备了从初始干燥状态显示出增强的溶胀动力学的细胞聚乙烯醇（PVA）水凝胶。制备后立即干燥的凝胶在溶胀时表现出双重吸附作用。在干燥前，经过10天洗涤以除去NaCl和多余的PVA链的凝胶显示出增加的初始溶胀速率和总水分含量。与通过化学或辐照交联技术制备的传统凝胶相比，冷冻/解冻的细胞PVA凝胶显示出整体增强的溶胀和更高的机械强度。 （C）2000 John Wiley＆Sons，Inc. [参考：5]

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