Homogeneous graft copolymerization of styrene onto cellulose in a sulfur dioxide-diethylamine-dimethyl sulfoxide cellulose solvent
Graft copolymerization of styrene onto cellulose was studied in a homogeneous system (SO/sub 2/(liquid)- diethylamine (DEA)-dimethyl sulfoxide (DMSO) medium)) by ..gamma..-ray mutual irradiation technique. At the same time, homopolymerization of styrene was also examined separately in DMSO, SO/sub 2/-DMSO, DEA-DMSO, and SO/sub 2/-DEA-DMSO media by the same technique. Polymerization of styrene hardly occurs on concentrations above 10 mole SO/sub 2/-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, SO/sub 2/-DMSO, and DEA-DMSO was evident, while the retardation of homopolymerization in the SO/sub 2/-DEA-DMSO medium was measurable. Sulfur atoms were detected in the polymers obtained in both of SO/sub 2/-DMSO and SO/sub 2/-DEA-DMSO solutions. All of the molecular weights of polymers obtained in the present experiment were very low (3.9 x 10/sup 3/-1.75 x 10/sup 4/).
- Research Organization:
- Kyoto Univ., Japan
- OSTI ID:
- 6875480
- Journal Information:
- J. Appl. Polym. Sci.; (United States), Vol. 25:12
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CELLULOSE
CHEMICAL RADIATION EFFECTS
STYRENE
AMINES
CHEMICAL REACTION KINETICS
DMSO
EXPERIMENTAL DATA
GAMMA RADIATION
GRAFT POLYMERS
GRAPHS
LIQUIDS
POLYMERIZATION
SULFUR DIOXIDE
TABLES
AROMATICS
CARBOHYDRATES
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISTRY
DATA
ELECTROMAGNETIC RADIATION
FLUIDS
HYDROCARBONS
INFORMATION
IONIZING RADIATIONS
KINETICS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC POLYMERS
ORGANIC SULFUR COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLYMERS
POLYSACCHARIDES
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
REACTION KINETICS
SACCHARIDES
SULFOXIDES
SULFUR COMPOUNDS
SULFUR OXIDES
400600* - Radiation Chemistry