MWCNT/poly(phenylene isophtalamide) Nanocomposite Membranes for Pervaporation of Organic Mixtures

被引：7

作者：

Penkova, A. V. ^{[1
]}

Pientka, Z. ^{[2
]}

Polotskaya, G. A. ^{[3
]}

机构：

[1] St Petersburg State Univ, Dept Chem Thermodynam & Kinet, St Petersburg 198504, Russia

[2] Acad Sci Czech Republ, Inst Macromol Chem, Prague, Czech Republic

[3] RAS, Inst Macromol Cpds, St Petersburg, Russia

来源：

FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES | 2011年 / 19卷 / 1-2期

基金：

俄罗斯基础研究基金会;

关键词：

Carbon nanotubes; homogeneous membranes; modification; pervaporation; poly(phenylene isophtalamide); sorption;

D O I：

10.1080/1536383X.2010.490138

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Homogeneous membranes based on poly (phenylene isophtalamide) (PA) modified by multi-walled carbon nanotubes (MWCNT) Taunit (R) were prepared and studied in separation of methanol/MTBE mixture by pervaporation. It was shown that the membranes were selective with respect to methanol. The highest values of separation factor and permeability were obtained for membrane containing 2wt% MWCNT in comparison with PA and PA/MWCNT (5wt%) membranes. Study of membrane swelling in methanol made it possible to determine sorption degree, Flory-Huggins parameters of polymer-solvent interaction and coefficients of methanol diffusion in membrane. Sorption and diffusion characteristics were involved in the analysis of transport properties in the pervaporation process. It was established that PA/MWCNT nanocomposite membranes are effective in purification of MTBE from methanol impurities.

引用

页码：137 / 140

页数：4

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