A new activity model for polymer solutions in the frame of lattice theory | |
Liu, Qing Lin ; Liu QL(刘庆林) ; Cheng, Zhen Feng | |
2005-12 | |
英文摘要 | A 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. |
语种 | 英语 |
出版者 | AMER CHEMICAL SOC |
内容类型 | 期刊论文 |
源URL | [http://dx.doi.org/doi:10.1021/ie050761g] |
专题 | 化学化工-已发表论文 |
推荐引用方式 GB/T 7714 | Liu, Qing Lin,Liu QL,Cheng, Zhen Feng. A new activity model for polymer solutions in the frame of lattice theory[J],2005. |
APA | Liu, Qing Lin,刘庆林,&Cheng, Zhen Feng.(2005).A new activity model for polymer solutions in the frame of lattice theory.. |
MLA | Liu, Qing Lin,et al."A new activity model for polymer solutions in the frame of lattice theory".(2005). |
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