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Title: Photodegradation studies of silver-backed polyacrylonitrile (PAN) films

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 ..mu..m. Some oxidative photodegradation pathways have been proposed; with radiation of lambda greater than or equal to 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.

Authors:
; ; ;
Publication Date:
Research Org.:
Solar Energy Research Inst., Golden, CO (USA); Denver Univ., CO (USA). Dept. of Chemistry
OSTI Identifier:
5512546
Report Number(s):
SERI/TP-255-2751; CONF-850887-11
ON: DE85012154
DOE Contract Number:  
AC02-83CH10093
Resource Type:
Conference
Resource Relation:
Conference: SPIE international technical symposium on optical and electro-optical engineers, San Diego, CA, USA, 18 Aug 1985; Other Information: Portions of this document are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; FILMS; DECOMPOSITION; POLYACRYLATES; SOLAR REFLECTORS; ABSORPTIVITY; EXPERIMENTAL DATA; FOURIER TRANSFORM SPECTROMETERS; INFRARED RADIATION; OPTICAL PROPERTIES; POLYMERS; SILVER; SOLAR SIMULATORS; SPECTRAL REFLECTANCE; SUBSTRATES; ULTRAVIOLET RADIATION; ANALOG SYSTEMS; CHEMICAL REACTIONS; DATA; ELECTROMAGNETIC RADIATION; ELEMENTS; EQUIPMENT; ESTERS; FUNCTIONAL MODELS; INFORMATION; MEASURING INSTRUMENTS; METALS; NUMERICAL DATA; ORGANIC COMPOUNDS; ORGANIC POLYMERS; PHYSICAL PROPERTIES; POLYVINYLS; RADIATIONS; SIMULATORS; SOLAR CONCENTRATORS; SOLAR EQUIPMENT; SPECTROMETERS; TRANSITION ELEMENTS; 141000* - Solar Collectors & Concentrators; 360603 - Materials- Properties

Citation Formats

Smith, D M, Chugtai, A R, Sergides, C A, and Schissel, P. Photodegradation studies of silver-backed polyacrylonitrile (PAN) films. United States: N. p., 1985. Web.
Smith, D M, Chugtai, A R, Sergides, C A, & Schissel, P. Photodegradation studies of silver-backed polyacrylonitrile (PAN) films. United States.
Smith, D M, Chugtai, A R, Sergides, C A, and Schissel, P. 1985. "Photodegradation studies of silver-backed polyacrylonitrile (PAN) films". United States.
@article{osti_5512546,
title = {Photodegradation studies of silver-backed polyacrylonitrile (PAN) films},
author = {Smith, D M and Chugtai, A R and Sergides, C A and Schissel, P},
abstractNote = {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 ..mu..m. Some oxidative photodegradation pathways have been proposed; with radiation of lambda greater than or equal to 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.},
doi = {},
url = {https://www.osti.gov/biblio/5512546}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jul 01 00:00:00 EDT 1985},
month = {Mon Jul 01 00:00:00 EDT 1985}
}

Conference:
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