Premium
Photodegradation of cis‐1,4‐polyisoprene sensitized by the addition of chloronitroso compounds
Author(s) -
Rabek J. F.
Publication year - 1965
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1965.070090609
Subject(s) - photodegradation , conjugated system , nitroso , photochemistry , chemistry , absorption (acoustics) , nitroso compounds , wavelength , degradation (telecommunications) , polymer , organic chemistry , photocatalysis , materials science , catalysis , optoelectronics , composite material , telecommunications , computer science
It was found that chloronitroso compounds with a free non‐conjugated nitroso group show a considerable sensitizing activity in respect to the process of photochemical degradation of dissolved cis ‐1,4‐polyisoprene, which is induced by visible radiation (4000–7000 A.). The effect of 10 chloronitroso sensitizing compounds were investigated. The highest sensitizing activity was found with compounds 2,2‐chloronitrosopropane and 1,1‐chloronitrosocyclohexane. The maximum wavelength, of which the decrease of relative viscosity of solutions was the highest, was determined for 2,2‐chloronitrosopropane. The highest sensitizing activity of chloronitroso compounds was found for wavelengths corresponding to the absorption maximum of the sensitizer added. The theory of the sensitizing activity of chloronitroso compounds is proposed.