%0 Journal Article
%T The study of vapor-liquid equilibria for polymer/solvents by using gas-liquid chromatography]<br>气液色谱法研究聚合物/溶剂体系气液平衡
%A J Xie
%A <br>谢建军
%J 色谱
%D 1999
%I 
%X The infinite dilution weight fraction activity coefficient, omega 1 infinity, and Flory-Huggins interaction parameter, chi, have been determined for systems of polydimethylsiloxane (PDMS)/solvents and polymethyl-methacrylate (PMMA)/solvents by using gas chromatography from 58 degrees C to 180 degrees C. The solvents include styrene, acetone, ethyl ether, methanol, ethanol, acetic acid, trichloromethane, tetrahydrofuran and ethyl acetate in PDMS/solvent systems and n-hexane, n-heptane, cyclohexane, benzene, toluene, ethyl benzene, styrene, acetone, ethyl ether, methanol, ethanol, methyl methacrylate(MMA), trichloromethane, tetrahydrofuran and ethyl acetate in the PMMA/solvent systems. The results showed that omega 1 infinity and chi were decreased with the increase of temperature in the range from 58 degrees C to 180 degrees C. The study showed that UNIFAC and UNIFAC-FV models could not all be used to estimate omega 1 infinity of the solvents in PMMA/solvent systems. Therefore, UNIFAC and UNIFAC-FV models must be corrected or other models must be used.
%K NULL<br>气液平衡
%K PDMS
%K PMMA
%K 溶剂
%K 气液气谱法
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=6579068328FE643F&jid=4D81E042D77AFEC6881D14759692069C&aid=D7F5F79B7B81B86292C8BAF87B1AE8DC&yid=B914830F5B1D1078&vid=BCA2697F357F2001&iid=38B194292C032A66&sid=E1D946F217E3B046&eid=6CCE24D86D03D083&journal_id=1000-8713&journal_name=色谱&referenced_num=0&reference_num=3