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首页> 外文期刊>Journal of Applied Polymer Science >MELTING, REGELLING, AND REMELTING OF POLY(VINYL ALCOHOL) HYDROGELS
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MELTING, REGELLING, AND REMELTING OF POLY(VINYL ALCOHOL) HYDROGELS

机译：聚乙烯醇的熔融，回胶和重熔

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摘要

The melting behaviors of hydrogels of syndiotacticity-rich poly(vinyl alcohol) (s-PVA), derived from vinyl trifluoroacetate, during heating at various rates of rising temperature were examined. For the hydrogels with the polymer concentrations above 5 g/dL chilled at the temperatures of 0 similar to 40 degrees C, the melting temperature increased with a decrease in the rate of rising temperature. During rising temperature at lower rates, the phase separation with spinodal decomposition progressed even in gels and the microcrystals, which play an important role as the junction points, propagated to thermally more stable size. The small, broad exothermic peaks during rising temperature of s-PVA hydrogels in DSC thermograms was found at the temperature ranges of 10 similar to 30 and 45 similar to 60 degrees C. (C) 1996 John Wiley & Sons, Inc. [References: 24]
机译：研究了在不同升温速率下加热过程中，富含间同立构规整度的聚乙烯醇（s-PVA）的水凝胶的熔融行为。对于在0类似于40摄氏度的温度下冷却的聚合物浓度高于5 g / dL的水凝胶，熔融温度随着温度上升速率的降低而增加。在以较低速率升高温度的过程中，即使在凝胶和微晶中也发生了带有旋节线分解的相分离，而微晶作为结点起着重要的作用，传播到热稳定尺寸。在DSC温度记录图中s-PVA水凝胶的温度升高过程中，出现了小的宽广的放热峰，其温度范围为10类似于30℃，45类似于60摄氏度。（C）1996 John Wiley＆Sons，Inc. [参考： 24]

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