A general model from theoretical cosolvency models
A general model from theoretical cosolvency models
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DOI：
10.1016/s0378-5173(97)04922-3
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发表时间：
1997-06-26
影响因子：
5.8
通讯作者：
JouybanGharamaleki, A
中科院分区：
文献类型：
--
作者：
BarzegarJalali, M;JouybanGharamaleki, A
结果表明，两个表面不同的理论共溶解度模型，即过剩自由能EFE和近理想二元溶剂/Redlich-Kister的组合模型CNIBS/R-K，可以通过适当的取代和重排转化为一般的单一模型GSM。在二元溶剂体系中，一般模型是关于其中一种溶剂浓度的幂函数级数方程。从所得到的GSM出发，从理论上证明了采用扩展希尔德布兰德方法EHA的协溶度方程，以及用经验幂级数方程表示溶解度的方法。将GSM模型的精度与原始EFE模型和CNIBS/R-K模型的精度进行了比较，结果表明原始模型和相应的GSM模型之间的精度存在差异，这归因于模型中自变量排列的不同。(C)1997年爱思唯尔科学公司。
It has been shown that the two theoretical cosolvency models, i.e. the excess free energy, EFE, and the combined nearly ideal binary solvent/Redlich-Kister, CNIBS/R-K, despite different appearances could be converted to a general single model, GSM, using some appropriate substitutions and rearrangements. The general model was a power series equation with respect to the concentration of one of the solvents in a binary solvent system. From the obtained GSM a theoretical justification was provided to the cosolvency equations employing the extended Hildebrand approach, EHA, as well as those methods using an empirical power series equations for expressing the solubility. The accuracy of GSM was compared with that of the original EFE and CNIBS/R-K models and the results suggested differences in the accuracy between the original models and the corresponding GSM, which was attributed to differences in the arrangements of the independent variables in the models. (C) 1997 Elsevier Science B.V.