Enhanced gas permeability of cellulose acetate membranes under microwave irradiation

被引:37
作者
Nakai, Y [1 ]
Yoshimizu, H [1 ]
Tsujita, Y [1 ]
机构
[1] Nagoya Inst Technol, Dept Mat Sci & Engn, Showa Ku, Nagoya, Aichi 4668555, Japan
基金
日本学术振兴会;
关键词
gas permeation; microwave; cellulose acetate; polymeric membrane;
D O I
10.1016/j.memsci.2005.02.008
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
In this study, the permeability coefficients of various gases for a cellulose acetate (CA) and polystyrene (PS) membrane were measured under microwave irradiation by using a handmade apparatus, which can irradiate a microwave (2450 MHz). Permeability in the PS membrane that have no polar functional groups was not affected by irradiating microwave, while permeability coefficients for various gases in the CA membrane that have polar functional groups were more than these without microwave irradiation. Further, the degree of increment in permeability coefficients with microwave depended on kinds of permeation gas. The increment of Kr permeability under microwave irradiation was most remarkable. It could be expected that microwave accelerate the mobility of polar functional groups in polymeric membranes, and then, gas permeability improve due to an extension of diffusion path in membranes. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:72 / 77
页数:6
相关论文
共 26 条
[11]   CARBON-DIOXIDE SORPTION AND TRANSPORT IN POLYCARBONATE [J].
KOROS, WJ ;
PAUL, DR ;
ROCHA, AA .
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 1976, 14 (04) :687-702
[12]  
LANGA F, 1997, CONTEMP ORG SYNTH, P373
[13]   COMPARISON OF REACTION-MECHANISMS OF EPOXY-RESINS UNDERGOING THERMAL AND MICROWAVE CURE FROM INSITU MEASUREMENTS OF MICROWAVE DIELECTRIC-PROPERTIES AND INFRARED-SPECTROSCOPY [J].
MARAND, E ;
BAKER, KR ;
GRAYBEAL, JD .
MACROMOLECULES, 1992, 25 (08) :2243-2252
[14]  
Metaxas R., 1983, Industrial Microwave Heating
[15]  
Mulder M., 1996, BASIC PRINCIPLES MEM
[16]  
Osada Y., 1992, MEMBRANE SCI TECHNOL
[17]   THE EFFECT OF DEGREE OF ACETYLATION ON GAS SORPTION AND TRANSPORT BEHAVIOR IN CELLULOSE-ACETATE [J].
PULEO, AC ;
PAUL, DR ;
KELLEY, SS .
JOURNAL OF MEMBRANE SCIENCE, 1989, 47 (03) :301-332
[18]   SOLUBILITY OF CARBON-DIOXIDE IN CELLULOSE-ACETATE AT ELEVATED PRESSURES [J].
STERN, SA ;
DEMERINGO, AH .
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 1978, 16 (04) :735-751
[19]   TESTS OF A FREE-VOLUME MODEL OF GAS PERMEATION THROUGH POLYMER MEMBRANES .2. PURE AR, SF6, CF4, AND C2H2F2 IN POLYETHYLENE [J].
STERN, SA ;
SAMPAT, SR ;
KULKARNI, SS .
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 1986, 24 (10) :2149-2166
[20]   TESTS OF A FREE-VOLUME MODEL OF GAS PERMEATION THROUGH POLYMER MEMBRANES .1. PURE CO2, CH4, C2H4, AND C3H8 IN POLYETHYLENE [J].
STERN, SA ;
KULKARNI, SS ;
FRISCH, HL .
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 1983, 21 (03) :467-481