Premium
Swift heavy ion irradiated polymeric membranes for gas permeation
Author(s) -
Kulshrestha V.,
Awasthi K.,
Acharya N. K.,
Singh M.,
Avasthi D. K.,
Vijay Y. K.
Publication year - 2006
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.24595
Subject(s) - membrane , permeation , materials science , fluence , hydrogen , polycarbonate , ion , irradiation , chemical engineering , scanning electron microscope , solvent , semipermeable membrane , analytical chemistry (journal) , polymer chemistry , chemistry , chromatography , composite material , organic chemistry , biochemistry , physics , nuclear physics , engineering
Polycarbonate membranes of thickness 18 μm were irradiated by Ni 7+ ion of 100 MeV at fluences 10 6 –10 8 ions/cm 2 . The permeability for hydrogen and carbon dioxide has been measured from the membrane with increasing etching time. Permeability of both the gases increases with etching time, but for hydrogen the permeability was higher than for carbon dioxide for all membranes. The selectivity of hydrogen increases as ion fluence of membrane increases, for 10 8 ions/cm 2 membrane was higher than the lower fluence membranes. The irradiated membranes were also etched by monitoring the current, which shows change in the etching time for membrane of different doses. Ion permeation measurements show that pores in polymeric membrane are charged or neutralized, which depends upon the variation in concentration of the solvent. The etched tracks of membranes were characterized by the scanning electron microscopy. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102:2386–2390, 2006