Modification of polyethersulphone induced by high energy proton, C + , and Ne 6+ ions: A spectroscopic study
Author(s) -
Vinodh Kumar S.,
Ghadei B.,
Jal P. K.,
Dey K.,
Krishna J. B. M.,
Saha A.
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.23552
Subject(s) - ion , proton , irradiation , absorption (acoustics) , spectroscopy , analytical chemistry (journal) , fluorescence , fourier transform infrared spectroscopy , absorption band , materials science , absorption spectroscopy , chemistry , optics , physics , organic chemistry , chromatography , quantum mechanics , nuclear physics , composite material
Abstract Polyethersulphone (PES) was irradiated with 4 MeV proton, 3.6 MeV C + , and 145 MeV Ne 6+ ions at different ion fluences. The linear energy transfer dependence on ion‐induced spectral changes was analyzed by ultraviolet–visible, Fourier transform infrared spectroscopy and fluorescence spectroscopy. The gradual red shift with the increase in optical absorption was observed in the region of 350–500 nm for proton and 400–800 nm for C + and Ne 6+ ions irradiated PES. The gradual shift in absorption may be attributed to the formation of carbonaceous clusters. The gradual decrease in optical band gap indicates increase in cluster sizes. When PES was irradiated with protons, loss in fluorescence emission intensity at 440 nm was observed, although there was no change in spectral shape. In contrast, C + and Ne 6+ ion irradiated PES showed blue shift with concomitant loss in intensity and the formation of new peak at 575 nm. In fact, heavier ions are found to be more effective in inducing physicochemical modifications in PES. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 101: 1591–1597, 2006