THE EFFECTS OF GAMMA RADIATION ON COTTON. PART V. POST-IRRADIATION REACTIONS

Journal Article · Sun Sep 01 04:00:00 EDT 1963 · Textile Res. J.

DOI:https://doi.org/10.1177/004051756303300908· OSTI ID:4084211

Blouin, F A; Arthur, Jr, J C

Purified cotton cellulose dried to less than 0.5% moisture was irradiated in a nitrogen atmosphere with high-energy gamma radiation from cobalt- 60 at selected dosages up to 6 x 10/sup 6/ roentgens. Post-irradiation chain cleavages of the cellulose molecule on exposure to air were indicated by decreases in the viscosity of the irradiated cellulose with increasing time after irradiation. Post-irradiation reactions of the irradiated cellulose with acrylonitrile were investigated. Low yields of graft polymer were obtained on treatment of the irradiated cottons with pure acrylonitrile, 5% acrylonitrile in water, and 32% acrylonitrile in N,Ndimethylformamide. The effect of temperature in the 23100 deg C range on these treatments was investigated. High yields of graft polymer were obtained when the irradiated cottons were treated with acrylonitrile solutions in concentrated aqueous zinc chloride. The mechanical properties of selected fibrous graft polymers of cellulose-polyacrylonitrile were determined. Some irradiations were carried out in the presence of oxygen and moisture for comparison of the post-irradiation reactions. Results are discussed with relation to the production of long-lived free radicals in the cotton cellulose by high-energy gamma radiation. (auth)

• Research Organization: Southern Regional Research Lab., New Orleans
• Sponsoring Organization: USDOE
• NSA Number: NSA-18-010170
• OSTI ID: 4084211
• Journal Information: Textile Res. J., Journal Name: Textile Res. J. Vol. Vol: 33
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ACRYLIC ACID
AIR
AMIDES
CELLULOSE
CHEMICAL REACTIONS
CHEMISTRY
COBALT 60
CONFIGURATION
COTTON
CYANIDES
DECOMPOSITION
DIAGRAMS
EFFICIENCY
ENERGY
EVAPORATION
FIBERS
FORMIC ACID
FREE RADICALS
GAMMA RADIATION
GAMMA SOURCES
GASES
HUMIDITY
IMPURITIES
IRRADIATION
LIFETIME
MEASURED VALUES
MECHANICAL PROPERTIES
METHYL RADICALS
MIXING
MOLECULES
NITROGEN
OPERATION
POLYMERIZATION
POLYMERS
PRODUCTION
QUANTITY RATIO
RADIATION CHEMISTRY
RADIATION DOSES
RADIOLYSIS
REFINING
SOLVENTS
TEMPERATURE
TEXTILES
TRACE AMOUNTS
USES
VARIATIONS
VISCOSITY
WATER
ZINC CHLORIDES