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Progress in Color, Colorants and Coatings، جلد ۱۱، شماره ۲، صفحات ۹۳-۱۰۱
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عنوان انگلیسی Evaluating the Role of antioxidants in the stabilization of hydroxypropyl cellulose by ATR-FTIR Spectroscopy
چکیده انگلیسی مقاله This study is aimed at evaluating the performance of tetrakismethylene-3-3,5-di-tert-butyl-4-hydroxyphenyl propionate methane S1010, tris2,4-di-tert-butylphenyl phosphite S1680 and ascorbic acid AA antioxidants in stabilization of hydroxypropyl cellulose HPC. For this purpose, a number of films with weight percent ratios of 0.4 w/w were prepared in a 1 isopropanol solution w/v. Then, the films underwent accelerated aging processes at the 3 light UV; 216hr, dry-heat 120°C; 240 hr and moist-heat 70°C; RH: 95; 240 hr conditions. During the aging processes, structural changes were studied using the attenuated total reflectance Fourier transform infrared ATR-FTIR spectroscopy and based on the defined destruction indices. In addition, changes in color of films were evaluated by colorimetry in CIELab system before and after the aging process. According to the obtained results, the S1010 phenolic antioxidant led to improvements in color and structure stabilization of HPC against environmental destructing factors in all three destruction processes of photooxidation, thermooxidation and hydrothermal.
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نویسندگان مقاله H. Ahmadi |
Department of Conservation of Cultural and Historic Objects, Art University of Isfahan

S. Mallakpour |
Organic Polymer Chemistry Research Laboratory, Department of Chemistry,Research Institute for Nanotechnology and Advanced Materi, Isfahan University of Technology

A. Koochakzaei |
Department of Conservation of Cultural and Historic Objects, Art University of Isfahan

نشانی اینترنتی http://pccc.icrc.ac.ir/article_75744_d83277d8c8abe6b44d07fdb3c3dfbf55.pdf
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