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dc.contributor.authorLiu, Qing Lin
dc.contributor.author刘庆林
dc.contributor.authorCheng, Zhen Feng
dc.date.accessioned2011-10-12T13:08:25Z
dc.date.available2011-10-12T13:08:25Z
dc.date.issued2005-12
dc.identifier.citationInd. Eng. Chem. Res., 2006, 45 (1):365–371zh_CN
dc.identifier.issn0888-5885
dc.identifier.urihttp://dx.doi.org/doi:10.1021/ie050761g
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/10913
dc.description.abstractA simplified activity model for polymer solutions is derived from the Gibbs-Helmholtz relation, in conjunction with the lattice theory in this work. The model includes not only combinatorial and residual terms but also a free-volume (FV) term. The calculated results differ significantly between the model equations with and without taking the FV effect into consideration. The validity of this new method is demonstrated by comparing the calculated activities from the proposed model equation with those by the Entropic-FV (EFV), UNIFAC-FV, and UNIFAC methods. The overall average absolute deviation (AAD) of solvent activities in 34 polymer solutions was 7.58% for the EFV method, 5.32% for the UNIFAC-FV method, 22.00% for the UNIFAC method, and 3.48% for the proposed model. It is shown that the new model can yield improved results over the other models and is able to predict the phase behavior for polymer solutions over a wide range of molecular weights, temperatures, and densities.zh_CN
dc.language.isoenzh_CN
dc.publisherAMER CHEMICAL SOCzh_CN
dc.titleA new activity model for polymer solutions in the frame of lattice theoryzh_CN
dc.typeArticlezh_CN


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