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Organic vapor permeation through natural rubber/poly(ethylene‐ co ‐vinyl acetate) blend membranes
Author(s) -
Anusree S.,
Sujith A.,
Radhakrishnan C.K.,
Unnikrishnan G.
Publication year - 2008
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.20954
Subject(s) - permeation , materials science , membrane , acetone , natural rubber , polymer chemistry , ethylene vinyl acetate , vinyl acetate , chemical engineering , crystallinity , swelling , permeability (electromagnetism) , composite material , organic chemistry , polymer , chemistry , copolymer , biochemistry , engineering
Abstract Natural rubber/poly(ethylene‐ co ‐vinyl acetate) (NR/EVA) blend membranes, crosslinked with dicumyl peroxide, have been prepared and tested for vapor permeation characteristics. The effects of structure and morphology of the blend membranes on the permeability were investigated. The permeability was found to decrease with increase in EVA content which has been attributed to the semicrystalline nature of EVA. The permeation process has been observed to be controlled mainly by the molecular mass of the penetrants. In the case of benzene/acetone mixtures, it has been found that when acetone concentration increases the vapor permeation rate decreases. This clearly indicates less interaction of acetone towards NR/EVA membranes. For supporting all the observations, the parameters such as swelling coefficient and permeability coefficient have been calculated. POLYM. ENG. SCI., 48:198–202, 2008.© 2007 Society of Plastics Engineers