摘要
由文献发表的pVT数据回归得到了许多液态聚合物的Tait方程参数。据此能够获得各种密度下聚合物的等容线。将这些等容线斜率的对数与密度作图，则无例外地发现这些作出的线是很好的直线, 故可建立一个聚合物的通用内压方程。它有两个特性常数，分别决定于直线的斜率和截距。它能用来准确地计算298.15K时各种液态聚合物的内压; 据此，得到了90个聚合物的新溶解度参数值。
The parameters of empirical Tait equation have been regressed for a lot of polymeric liquids from their pVT data . The isochores at different densities can be obtained from these parameters. A good lineal relationship between the logarithm of slop of isochores and the densities is found for many polymers. Therefore, a generalized internal pressure equation with two characteristic constants which are determined by the slop and intercept of the relationship straight line respectively is established . The internal pressure of various polymeric liquids at 298.15K can be accurately calculated from this equation and the values of new solubility parameter defined by our previous work[4] are obtained for 90 polymers .
出处
《高校化学工程学报》
EI
CAS
CSCD
北大核心
2001年第3期206-212,共7页
Journal of Chemical Engineering of Chinese Universities
基金
国家自然科学基金资助项目!(编号: 29676011)
关键词
Tait方程
内压
溶解度参数
聚合物
等容线
： Tait equation； internal pressure； new solubility parameter； polymer
