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dc.contributor.authorQing Lin Liu
dc.contributor.author刘庆林
dc.contributor.authorZhen Feng Cheng
dc.date.accessioned2011-10-20T14:41:15Z
dc.date.available2011-10-20T14:41:15Z
dc.date.issued2005-10
dc.identifier.citationJOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS,2005,43(22):3299-3307zh_CN
dc.identifier.issn0887-6266
dc.identifier.urihttp://dx.doi.org/doi:10.1002/polb.20618
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/10966
dc.description.abstractA new activity model was developed with the use of the Gibbs-Helmholtz relation at constant pressure and composition. This model consists of combinatorial and residual terms. The residual term is the same as that in the UNIQUAC method, but the total area fraction of molecules is introduced on account of the hole effect. The combinatorial part takes into account the free volume (FV) effect, which plays a significant role in polymer systems. The validity of this model is demonstrated by calculating the solvent activities in 36 polymer solutions in comparison with Entropic-FV (EFV) and UNIFAC-FV methods. The total average absolute deviations (AAD) from the experimental observations are 8.27, 6.38, and 1.64 for EFV, UNIFAC-FV, and the present method, respectively. It is found that the fit to these experimental data by the present model is quite good over a wide range of concentration. An estimation of the infinite dilution activity coefficients also proves the validity of the new method. (c) 2005 Wiley Periodicals, Inc.zh_CN
dc.language.isoenzh_CN
dc.publisherJOHN WILEY & SONS INCzh_CN
dc.subjectentropic-FVzh_CN
dc.subjectfree volumezh_CN
dc.subjectGibbs free energyzh_CN
dc.subjectpolymer solutionszh_CN
dc.subjectUNIFAC-FVzh_CN
dc.titleNew free-volume-related activity model for polymer solutionszh_CN
dc.typeArticlezh_CN


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