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Saccharide radicals induced by UV irradiation at room temperature
Author(s) -
Kubota Hitoshi,
Ogiwara Yoshitaka,
Matsuzaki Kei
Publication year - 1978
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.1978.070221126
Subject(s) - radical , chemistry , irradiation , acrylamide , cellobiose , polymerization , aqueous solution , fructose , photochemistry , sucrose , nuclear chemistry , polymer chemistry , polymer , organic chemistry , monomer , cellulose , physics , nuclear physics , cellulase
Abstract The stability of saccharide radicals induced by UV irradiation at room temperature and the ability to initiate polymerization of acrylamide were investigated. UV light of 220 < λ < 300 nm was proved to form saccharide radicals effectively at room temperature. ESR signal intensity of the irradiated saccharide was in the order of sucrose > methyl‐α‐ D ‐glucopyranoside ≫ cellobiose > D ‐xylose > D ‐glucose α D ‐fructose. The saccharide radicals were fairly stable at room temperature, however, the markedly declined in amount as the samples were brought to their own melting points or allowed contact with water. When an aqueous solution of acrylamide was added to the irradiated saccharide, polymerization was initiated and the conversion increased with an increasing amount of the preirradiated saccharide. Regarding the kind of saccharide, the conversion decreased in the following order: sucrose > methyl‐α‐ D ‐glucopyranoside > cellobiose > D ‐glucose, which indicated a good agreement with the magnitude of ESR signal intensity.