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Proceedings Paper

Photodegradation Studies Of Silver-Backed Polyacrylonitrile (PAN) Films
Author(s): D. M. Smith; A. R. Chughtai; C. A. Sergides; P. Schissel
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Paper Abstract

Fourier transform infrared (FT-IR) reflection-absorbance (RA) measurements have been used to characterize Ag-backed polyacrylonitrile (PAN) films and to study their photodegradation. The optical constants n and k for the polymers are determined in the mid-IR region, and the dependence of RA values on polymer functionality concentration as a function of film thickness calculated. The IR-RA values are nearly linear with the concentration of functionalities for PAN films of thicknesses up to 0.1 μm. Some oxidative photodegradation pathways have been proposed; with radiation of λ ≥ 250 nm, a polyimine structure is generated. A combination of 1.0% wt of Irganox 1010 and 0.5% wt of Irgastab 2002 in PAN films was found to significantly retard the photodegradation of the polymer without affecting the specularity of the PAN/Ag surface.

Paper Details

Date Published: 2 December 1985
PDF: 11 pages
Proc. SPIE 0562, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion IV, (2 December 1985); doi: 10.1117/12.966293
Show Author Affiliations
D. M. Smith, University of Denver (United States)
A. R. Chughtai, University of Denver (United States)
C. A. Sergides, University of Denver (United States)
P. Schissel, Solar Energy Research Institute (SERI) (United States)

Published in SPIE Proceedings Vol. 0562:
Optical Materials Technology for Energy Efficiency and Solar Energy Conversion IV
Carl M. Lampert, Editor(s)

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