کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9625905 | 460730 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Liquid-liquid equilibria of solvent + polymer solutions with a chain-referenced perturbed hard-sphere-chain equation of state
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
The chain-referenced perturbed hard-sphere-chain (CR-PHSC) equation of state (EOS) proposed by the authors has been applied to correlate liquid-liquid equilibria (LLE) for the binary systems of hexaneâ+âpolyethylene (PE), pentaneâ+âPE, hexaneâ+âlinear low density polyethylene (LLDPE) and pentaneâ+âpolypropylene. Three methods were examined to determine PHSC parameters of PE. The PHSC parameters regressed from only pVT data of liquid PE (method-1) gave too high cloud point pressures and could not be used to correlate the LLE at various temperatures. On the other hand, parameters regressed from the pVT data of PE as well as the binary LLE data of hexaneâ+âPE (Mw=15,200) mixture (method-3) could be used to correlate LLE of PE solutions with another solvent or PE of other molecular weights. Moreover, parameters of PE obtained by the extrapolation of the parameters for linear alkanes (method-2) were very close to the method-3 parameters and also gave satisfactory correlation results for the LLE of PE solutions. The CR-PHSC EOS with polymer parameters determined by the method-2 or method-3 was much better than the Sanchez-Lacombe EOS and gave almost the same results as those by the perturbed-chain statistical associating fluid theory (PC-SAFT).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fluid Phase Equilibria - Volume 237, Issues 1â2, 25 October 2005, Pages 162-169
Journal: Fluid Phase Equilibria - Volume 237, Issues 1â2, 25 October 2005, Pages 162-169
نویسندگان
Xiaoning Chen, Yoshiyuki Sato, Shigeki Takishima, Hirokatsu Masuoka,