REACTIONS OF CARBOXYLATED BUTADIENE-STYRENE RUBBERS AND THEIR MIXTURES WITH /epsilon/-CAPROLACTAM INDUCED BY $gamma$-RADIATION

Journal Article · Sat Sep 01 04:00:00 EDT 1962 · J. Polymer Sci.

DOI:https://doi.org/10.1002/pol.1962.1206117124· OSTI ID:4788913

Mladenov, I; Tutorskii, I A; Dogadkin, B A

Carboxylated butadiene-styrene rubber containing various amounts of styrene and methacrylic acid were exposed to 0.1 to 50 Mr doses of gamma radiation form a Co/sup 60/ source. This irradiation resulted in a decrease in the carboxyl group content, particularly at low doses. The radiochemical yield of crosslinked polymers at low doses is a linear function of the carboxyl group content of the initial polymer. The number of crosslinks formed by the carboxyl groups at doses up to 20 Mr calculated from the maximum swelling data were found to agree satisfactorily with the number of crosslinks as calculated from the carboxyl group consumption. Irradiation of the carboxylated rubber in mixtures with epsilon -caprolactam gives rise to addition of the latter to the rubber with formation of insoluble compounds. The amount of caprolactam combining with the rubber increases linearly with an increase in epsilon -caprolactam content of the original mixtures in the range of 5 to 50%. There is also an increase in the degree of crosslinking. An increase in the bound epsilon -caprolactam content leads to an increase in the tensile strengih of the polymer. (auth)

• Research Organization: Moscow Inst. of Fine Chemical Tech.
• NSA Number: NSA-16-029455
• OSTI ID: 4788913
• Journal Information: J. Polymer Sci., Journal Name: J. Polymer Sci. Vol. Vol: 61
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BUTADIENE
CARBOXYLIC ACIDS
CHEMICAL REACTIONS
COBALT 60
EXPANSION
GAMMA RADIATION
GAMMA SOURCES
IRRADIATION
METALS, CERAMICS, AND OTHER MATERIALS
METHACRYLIC ACID
MIXING
ORGANIC ACIDS
POLYMERIZATION
POLYMERS
QUANTITY RATIO
RADIATION CHEMISTRY
RADIATION DOSES
RADIATION EFFECTS
RUBBER
STYRENE
TENSILE PROPERTIES