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>Homogeneous graft copolymerization of styrene onto cellulose in a sulfur dioxide–diethylamine–dimethyl sulfoxide cellulose solvent
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Homogeneous graft copolymerization of styrene onto cellulose in a sulfur dioxide–diethylamine–dimethyl sulfoxide cellulose solvent
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机译：Homogeneous graft copolymerization of styrene onto cellulose in a sulfur dioxide–diethylamine–dimethyl sulfoxide cellulose solvent
AbstractGraft copolymerization of styrene onto cellulose was studied in a homogeneous system (SO2–DEA–DMSO medium) by γ‐ray mutual irradiation technique. At the same time, homopolymerization of styrene was also examined separately in DMSO, SO2–DMSO, DEA–DMSO, and SO2–DEA–DMSO media by the same technique. Polymerization of styrene hardly occurs on concentrations above 10 mole SO2–DEA complex per mole glucose unit. Maximum percent grafting was obtained in concentrations of 4 mole, after which it decreased rapidly. Total conversion and percent grafting increased with the irradiation time. The value (=0.55) of the slope of the total conversion rate plotted against the dose was only a little higher than the 1/2 which was expected from normal kinetics. No retardation in homopolymerization of styrene in DMSO, SO2–DMSO, and DEA–DMSO was evident, while the retardation of homopolymerization in the SO2–DEA–DMSO medium was measurable. Sulfur atoms were detected in the polymers obtained in both of SO2–DMSO and SO2–DEA–DMSO solutions. All of the molecular weights of polymers obtained in the present experiment were v
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