Premium
UV crosslinking of Fe 3+ ‐doped poly(vinyl alcohol)—Characterization of optical properties and swelling behavior
Author(s) -
Schauberger Jörg Guido,
Riess Gisbert,
Kern Wolfgang
Publication year - 2013
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.39109
Subject(s) - vinyl alcohol , materials science , irradiation , polymer , doping , swelling , molar absorptivity , photobleaching , uv curing , aqueous solution , molar mass , polymer chemistry , curing (chemistry) , chemical engineering , composite material , fluorescence , chemistry , organic chemistry , optics , physics , optoelectronics , nuclear physics , engineering
The effects of UV irradiation on iron(III)chloride doped poly(vinyl alcohol) (PVA) films, using a high molar mass polymer, have been studied. It has been found that the polymer is oxidized and crosslinked during UV irradiation. UV/VIS spectra reveal an exponential loss of absorption at λ = 360 nm, and the refractive index of the PVA:FeCl 3 films decreases significantly during UV irradiation (Δ n D = −0.09). The effects of crosslinking have been studied using the sol–gel technique, which revealed high gel contents due to doping and UV‐exposure. Photolithographic patterning of doped PVA films using a medium‐pressure mercury‐vapor UV source has been carried out, leading to good contrast behavior before and after development in aqueous media. A photobleaching effect was observed, therefore the curing of thicker films is feasible. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom