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Effect of Plasma Treatment on the Gas Permeability of Poly(4‐methyl‐2‐pentyne) Membranes
Author(s) -
Shao Lei,
Samseth Jon,
Hägg MayBritt
Publication year - 2007
Publication title -
plasma processes and polymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 74
eISSN - 1612-8869
pISSN - 1612-8850
DOI - 10.1002/ppap.200600219
Subject(s) - membrane , contact angle , plasma , permeability (electromagnetism) , x ray photoelectron spectroscopy , materials science , chemistry , analytical chemistry (journal) , polymer chemistry , chemical engineering , chromatography , composite material , biochemistry , physics , quantum mechanics , engineering
The surface of a poly(4‐methyl‐2‐pentyne) membrane was modified by plasma treatment using CCl 4 ; the permeabilities of O 2 , N 2 , H 2 , CH 4 and CO 2 were measured before and after the plasma treatment, and the selectivities of O 2 /N 2 , H 2 /N 2 , CO 2 /N 2 , CO 2 /CH 4 and H 2 /CH 4 were calculated. The selectivities were found to be remarkably improved after plasma treatment while gas permeabilities decreased. The effect of the plasma conditions such as the treatment time and discharge power on the permeabilities of the membranes was investigated in detail. The surface of modified membranes was analyzed by XPS, and the contact angles of water on the membranes were measured by a contact‐angle goniometer.