A rheological investigation of aqueous solutions of poly (vinyl alcohol) during aging. Part IV: Repeated aging of concentrated solutions
A rheological investigation of aqueous solutions of poly (vinyl alcohol) during aging. Part IV: Repeated aging of concentrated solutions
复制标题
老化过程中聚乙烯醇水溶液的流变学研究。
DOI：
10.1007/bf00652869
复制
发表时间：
1992
影响因子：
2.4
通讯作者：
O. Quadrat
中科院分区：
文献类型：
--
作者：
P. Štern;E. Prokopová;O. Quadrat
用非牛顿粘度计和法向应力测量法研究了聚乙烯醇（PVA）水溶液的老化过程。结果表明，如果凝胶在与制备原始溶液相同的温度下熔化，则这种溶液的老化以与原始溶液相同的方式进行。如果由于在较低温度下加热而发生熔融，则所得溶液更快地老化。
Aging of aqueous solutions of poly (vinyl alcohol) obtained by melting of gels, formed in the aging process from solutions prepared by the dissolution of the polymer in hot water, was investigated using non-Newtonian viscometry and normal stress measurement. It was shown that, if the gels undergo melting at the same temperature at which the original solutions were prepared, aging of such solutions proceeds in the same way as in the case of the original solutions. If melting occurred due to heating at lower temperature, the resulting solutions aged more quickly.