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Polymer surface modification due to excimer laser radiation—Chemical and physical changes in the surface structure of poly(ethylene terephthalate)
Author(s) -
Watanabe Hirosuke,
Takata Tadahiko,
Tsuge Masuo
Publication year - 1993
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.4990310306
Subject(s) - materials science , x ray photoelectron spectroscopy , irradiation , ethylene , excimer laser , polymer , fourier transform infrared spectroscopy , surface modification , excimer , contact angle , infrared , dissociation (chemistry) , laser , chemical modification , radiation , polymer chemistry , chemical engineering , photochemistry , composite material , optics , chemistry , organic chemistry , physics , nuclear physics , engineering , catalysis
The effects on chemical and physical properties of PET (poly(ethylene terephthalate)) film surfaces as a result of microstructuring induced by KrF‐laser (248 nm) radiation were investigated. On irradiation, the properties of film surfaces changed in proportion to radiation flux intensity. Close to threshold values, bulbous swellings appeared on the surface, which showed hydrophilic properties. At the threshold and above, regular rippling was seen, and the surface showed hydrophobic properties. Excimer laser irradiation induced chemical modification of the surface, decrease in the O/C ratio, dissociation of ester binding and amorphism as observed by X‐ray‐induced photoelectron spectroscopic and Fourier‐transform infrared analysis.