Gamma-induced vapor-phase graft-polymerization of methyl methacrylate onto poly(propylene)

Journal Article · Tue May 01 00:00:00 EDT 1973 · Nagoya Kogyo Gijutsu Shikensho Hokoku, v. 22, no. 5, pp. 188-194

OSTI ID:4330504

Kawase, K; Hayakawa, K

The vapor-phase graft-polymerization of methyl methacrylate onto poly(propylene) fibers was studied by a simultaneous gamma irradiation technique and the weight increase during the reaction was followed by a spring balance. The sorption of methyl methacrylate onto poly(propylene) fibers approached the apparent equilibrium 60 to 180 minutes after the introduction of the vapor and the equilibrium sorption was lowered wth increasing the temperature. The sorption was augmented with the increase in the extent of grafting. The rate of weight increase of fibers due to the grafting reaction became larger with increasing reaction temperature, vapor pressure of monomer, and irradiation dose rate. The grafting proceeded linearly with irradiation time when the vapor pressure of the monomer was low, but acceleration was observed when the vapor pressure of the monomer was high. The grafted fibers contained a large amount of occluded homopolymer. The grafting reaction process and the dependency of the rate of grafting on the temperature, vapor pressure, and dose-rate were well explained by taking into account the increase in sorption caused by the increase in the extent of grafting. (auth)

• Research Organization: Government Industrial Research Inst., Nagoya, Japan
• NSA Number: NSA-29-020697
• OSTI ID: 4330504
• Journal Information: Nagoya Kogyo Gijutsu Shikensho Hokoku, v. 22, no. 5, pp. 188-194, Other Information: Orig. Receipt Date: 30-JUN-74; Bib. Info. Source: JA (JA)
• Country of Publication: Japan
• Language: Japanese

Related Subjects

N40300* -Chemistry-Radiation Chemistry
*METHACRYLIC ACID ESTERS- CHEMICAL RADIATION EFFECTS
*METHYL METHACRYLATE- CHEMICAL RADIATION EFFECTS
*POLYPROPYLENE- CHEMICAL RADIATION EFFECTS
ADSORPTION
FIBERS
GAMMA RADIATION
GRAFT POLYMERS
IRRADIATION
MONOMERS
POLYMERIZATION
RADIATION DOSES
REACTION KINETICS
TEMPERATURE DEPENDENCE
VAPORS