文献类型：期刊文献

中文题名：液体内压的预测和新溶解度参数值

英文题名：PREDICTION OF INTERNAL PRESSURE AND VALUES OF NEW SOLUBILITY PARAMETER FOR LIQUIDS

作者：徐云蕾[1];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：2000

卷号：51

期号：3

起止页码：407

中文期刊名：化工学报

外文期刊名：CIESC Journal

收录：CSTPCD;;Scopus;北大核心:【北大核心1996】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金!资助项目 (No .2 96760 1 1 )

语种：中文

中文关键词：模型;溶解度参数;液体内压;预测

外文关键词：modified van der Waals' model , molar volume of liquid at normal boiling point , group contribution, internal pressure , solubility parameter

摘要：The modified van der Waals’model which has only one molecular size-dependent parameter is used to calculate the internal pressures of liquids.It is found that the model parameter has very good linear relation with the molar volume of liquids at normal boiling point.A group contribution method is established for the molar volume of liquids at normal boiling point.Therefore the internal pressures of various liquids can be predicted.On the basis of the generalized Gibbs free energy model for mixing of liquids,proposed by our previous work,a new solubility parameter had been defined,which is equal to the ratio of the cohesive energy density with the square root of internal pressure.This definition is more strict and its range of application is more exten sive than classical Hildebrand solubility parameter.In present work,the values of new solubility parameter for 170 solvents at 298.15 K are obtained.
The modified van der Waals'model which has only one molecular size-dependent parameter is used to calculate the internal pressures of liquids.It is found that the model parameter has very good linear relation with the molar volume of liquids at normal boiling point.A group contribution method is established for the molar volume of liquids at normal boiling point.Therefore the internal pressures of various liquids can be predicted.On the basis of the generalized Gibbs free energy model for mixing of liquids,proposed by our previous work,a new solubility parameter had been defined,which is equal to the ratio of the cohesive energy density with the square root of internal pressure.This definition is more strict and its range of application is more exten sive than classical Hildebrand solubility parameter.In present work,the values of new solubility parameter for 170 solvents at 298.15 K are obtained.