文献类型：期刊文献

中文题名：液体和聚合物的内压预测

英文题名：Prediction of Internal Pressure for Liquids and Polymers

作者：俞春芳[1];黑恩成[1];刘国杰[1]

机构：[1]华东理工大学化学系,上海200237

年份：2004

卷号：18

期号：2

起止页码：135

中文期刊名：高校化学工程学报

外文期刊名：Journal of Chemical Engineering of Chinese Universities

收录：CSTPCD;;EI(收录号：2004298271668);Scopus;北大核心:【北大核心2000】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：液体;聚合物;内压;基团贡献;预测

外文关键词：Liquids;Polymers;Pressure

摘要：如同先前报道的液态聚合物一样,298.15 K时一般小分子液体的内压平方根l与摩尔体积Vm的乘积亦正比于它们的van der Waals体积Vvdw,而且两者有相同的比例系数。这说明各种液体的lVm具有相同的基团加和性。据此,利用它们的内压和摩尔体积的实验值建立了一个lVm的基团贡献法,它能用来预测各种液态有机物,包括聚合物在298.15 K时的内压值。本法不仅适用于非极性和弱极性液体,而且也适用于强极性和缔合液体。熟知的Small溶解度参数基团贡献法只不过是本工作的一个特例。对120种有机液体和液态聚合物的l值预测结果表明,其与实验值的一致性令人满意。
As the polymeric liquids reported in our previous works (J. Chem. Ind. and Eng., 2002, 53(12): 1288), the product of square root of internal pressure λ and molar volume Vm for the general small molecular liquids at 298.15 K is also directly proportional to their Van der Waals volume Vvdw, and both have same proportional coefficients. This indicates that the values of λVm for all kinds of liquids have same group additivity. Therefore, using their experimental values of internal pressure and molar volume, a group contribution method of λVm, which can be used to predict the internal pressure of various organic liquids contained polymeric liquids at 298.15 K, is established. This method is applicable not only to non-polar and slight polar liquids, but also to strong polar and associated liquids. The famous Small's group contribution of solubility parameter is only a specific example of this work. The prediction results of λ for 120 organic liquids and polymeric liquids show that the consistency with experimental values is satisfactory.