UV crosslinking of Fe3+‐doped poly(vinyl alcohol)—Characterization of optical properties and swelling behavior. Issue 6 (1st March 2013)

• Record Type: Journal Article
• Authors: Schauberger, Jörg Guido; Riess, Gisbert; Kern, Wolfgang
• Is Part Of: Journal of applied polymer science. Volume 129:Issue 6(2013:Sep. 15)
• Page Start: 3623
• Page End: 3628
• Publication Date: 2013-03-01
• Subjects: Polymers -- Periodicals; Polymerization -- Periodicals; 668.9
• DOI: 10.1002/app.39109
• Languages: English
• ISSNs: 0021-8995

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>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:FeCl₃ films decreases significantly during UV irradiation (Δ<italic>n</italic>^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</p> </abstract>