Photodegradation Studies Of Silver-Backed Polyacrylonitrile (PAN) Films

D. M. Smith; A. R. Chughtai; C. A. Sergides; P. Schissel

doi:10.1117/12.966293

2 December 1985 Photodegradation Studies Of Silver-Backed Polyacrylonitrile (PAN) Films

D. M. Smith, A. R. Chughtai, C. A. Sergides, P. Schissel

Proceedings Volume 0562, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion IV; (1985) https://doi.org/10.1117/12.966293
Event: 29th Annual Technical Symposium, 1985, San Diego, United States

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.

Citation Download Citation

D. M. Smith, A. R. Chughtai, C. A. Sergides, and P. Schissel "Photodegradation Studies Of Silver-Backed Polyacrylonitrile (PAN) Films", Proc. SPIE 0562, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion IV, (2 December 1985); https://doi.org/10.1117/12.966293

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