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Propylene Sorption and Coordinative Interactions for Poly(N-vinyl pyrrolidone-co-vinyl acetate)/Silver Salt Complex Membranes

Cited 13 time in Web of Science Cited 13 time in Scopus
Authors
Joo, Seung Hwan; Kim, Jong Hak; Kang, Sang Wook; Jang, Jyongsik; Kang, Yong Soo
Issue Date
2007
Publisher
Wiley Blackwell
Citation
Journal of Polymer Science: Part B: Polymer Physics, 2007, 45, 2263–2269
Keywords
facilitated transportgas permeationinteractionmembranemetal-polymer complexesolefinsilver ion
Abstract
When poly(N-vinyl pyrrolidone-co-vinyl acetate) (PVP-co-PVAc) containing
amide and ester groups were complexed with silver salts to form silver polymer electrolyte
membranes, their separation performance of propylene/propane mixtures
showed the high selectivity of propylene over propane of 55 and the high mixed gas
permeance of 12 GPU (1 GPU ¼ 1.0 3 10 6 cm3(STP) cm 2 s 1 cmHg 1). The separation
performance strongly depends on the composition of the copolymer: the higher
concentration of PVP in the copolymer, the better separation performance was
achieved. These results suggest that the amide group is more effective in facilitated
propylene transport than the ester group, primarily due to the stronger interaction of
the silver ions with the amide than the ester oxygens, as demonstrated by FT-IR and
FT-Raman spectroscopies. In-situ FT-IR spectra upon propylene sorption also demonstrate
that the interaction strength of the silver ions with the ligands is arranged:
amide > C¼C > ester.
ISSN
0887-6266
Language
English
URI
https://hdl.handle.net/10371/61392
DOI
https://doi.org/10.1002/polb.21244
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Chemical and Biological Engineering (화학생물공학부)Journal Papers (저널논문_화학생물공학부)
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