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Ability of cellulosic materials to initiate graft copolymerization by photo‐irradiation
Author(s) -
Kubota Hitoshi,
Ogiwara Yoshitaka,
Yamato Hitoshi
Publication year - 1974
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.1974.070180322
Subject(s) - dissolving pulp , sodium hydroxide , solvent , cellulose , sodium hypochlorite , irradiation , copolymer , pulp (tooth) , sulfite , hydrogen peroxide , methyl methacrylate , methanol , acetone , nuclear chemistry , materials science , chemistry , polymer chemistry , organic chemistry , polymer , medicine , physics , pathology , nuclear physics
The ability of various kinds of cellulose samples to initiate graft copolymerization of methyl methacrylate by photo‐irradiation was examined. Untreated samples (absorbent cotton, sulfite pulp, dissolving pulp, and semichemical pulp), extracted samples (1% sodium hydroxide, methanol, and ethanol‐benzene mixture as extraction solvent), oxidized samples (periodic acid, sodium hypochlorite, hydrogen peroxide, and nitrogen dioxide), a reduced sample, an oximated sample, and a ferric ion‐adsorbing sample were used for the experiments. It was found that impurities in the sample as well as the oxidized states affect the initiation reaction remarkably. It was also noted that the contribution of these factors was remarkable in an irradiation system with a light of wavelength longer than 300 nm, although in the systems using sensitizers or irradiation with a light of shorter wavelength, initiation took place almost indifferent to the cellulose characteristics.