使用1H核磁共振分析方法,证明聚丙烯酸酯的三氯甲烷溶液中氢键的存在,并研究了三氯甲烷在聚丙烯酸酯中的溶解扩散行为.由于氢键存在加强分子间相互作用,使得溶解性增强,扩散性减小.使用LFHB-EOS模型计算溶解性,自由体积理论推算扩散系数,同时考虑耐溶剂基膜的抑制溶胀效果,建立数学模型计算渗透通量.对高分子溶液相平衡计算而言,当高分子的分子量大于一定值以后,溶剂的溶解性与分子量无关.三氯甲烷在充填型复合膜中的渗透通量计算结果和蒸汽渗透实验测定基本一致,表明以化工热力学的物性推算为基础进行有机溶剂分离膜设计研究在含有氢键作用的极性溶剂体系取得成功.
参考文献
| [1] | J.G. Wijmans;R.W. Baker .The solution-diffusion model: a review[J].Journal of Membrane Science,1995(1/2):1-21. |
| [2] | Kataoka T;Tsuru T;Nakao S et al.Membrane transport properties of pervaporation and vapor permeation in ethanol-water system using polyacrylonitrile and cellulose acetate membrane[J].Journal of Chemical Engineering of Japan,1991,24:334-339. |
| [3] | Mulder M H V;Smolders C A .Preferential sorption versus preferential permeability in pervaporation[J].Journal of Membrane Science,1985,22:155-173. |
| [4] | Rhim J W;Huang R Y M .On the prediction of separation factor and permeability in the separation of binary mixtures by pervaporation[J].Journal of Membrane Science,1989,46:335-348. |
| [5] | Heintz A;Stephan W .A Generalized solution-diffusion model of the per aporation process through composite membranes.Part Ⅰ.Prediction of mixture solubilities in the dense acti e layer using the UNIQUAC model[J].Journal of Membrane Science,1994,89:143-151. |
| [6] | S.J. Doong;W.S. Ho;R.P. Mastondrea .Prediction of flux and selectivity in pervaporation through a membrane[J].Journal of Membrane Science,1995(1/2):129-146. |
| [7] | Yamaguchi T;Nakao S;KIMURA S .Plasma-graft filling polymerization:Preparation of a new type of pervaporation membrane for organic liquid mixtures[J].Macromolecules,1991,24:5522-5527. |
| [8] | 王保国,山口猛央,中尾真一.基于物性推算法的膜分离材料设计[J].膜科学与技术,2001(05):7-13. |
| [9] | Barrow G M .Conjugation and the intensity of the infrared carbonyl band[J].Journal of Chemical Physics,1953,21:2008-2011. |
| [10] | Huggins C M;Pimentel G C;Shoolery J N .Proton magnetic resonance studies of chloroform in solution:Evidence of hydrogen bonding[J].Journal of Chemical Physics,1955,23:1244-1247. |
| [11] | Panayiotou C;Sanchez I C .Hydrogen bonding in fluids:An equation of state approach[J].Journal of Physical Chemistry,1991,95:10090-10097. |
| [12] | Panayiotou C;Sanchez I C .Statistical thermodynamics of associated polymer solutions[J].Macromolecules,1991,24:6231-6237. |
| [13] | Sanchez I C;Lacombe R H .An elementary molecular theory of classical fluids:Pure fluids[J].Journal of Physical Chemistry,1976,80:2352-2362. |
| [14] | Boudouris D;Constantinou L;Panayiotou C .Group contribution estimation of the thermodynamic properties of polymers[J].Industrial and Engineering Chemistry Research,1997,36:3968-3973. |
| [15] | Seong-Uk Hong .Prediction of Polymer/Solvent Diffusion Behavior Using Free-Volume Theory[J].Industrial & Engineering Chemistry Research,1995(7):2536-2544. |
| [16] | Joesten M D;Schaad L J.Hydrogen Bonding[M].New York: Marcel Dekker Inc,1974 |
| [17] | Saeki S;Holste J C;Bonner D C .The effect of polymer side chains on vapor sorption in polyacrylate and polymethacrylate solutions[J].Journal of Polymer Science Part B:Polymer Physics,1983,21:2049-2056. |
| [18] | Wang B G;Yamaguchi T;Nakao S .Prediction of the solubility of chloroform in acrylate polymer mixtures with inclusion of the hydrogen-bonding effect[J].Journal of Physical Chemistry B,2001,105(15):3143-3149. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%