Radiation-Induced Graft Copolymerization of Methacrylic Acid and Methyl methacrylate onto Polyester.

The radiation-induced graft polymerization of methacrlic acid and methyl methacrylate onto a polyester fabric was investigated with ${\gamma}$-ray as the radiation source, and the rate of grafting was examined. When acrylic acid, methacrylic acid, and methyl methacrylate were grafted onto a polyester fabric, grafting efficiency was depened upon the dielectric constant of the solvent in the monomer mixture. The yield of the graft polymerization was related to the total dose, the concentration of the monomer, and the concentration of the swelling agent. The melting point and the glass transition temperature of MA and MMA grafted copolymers were analysed by means of DTA. Physical properties, such as the moisture regain, the antistatic property, and the wicking time were measured.

감마선을 이용하여 폴리에스터직포에 methacylic acid와 methyl methacylate를 graft 종합반응시켜서 그 반응성을 보았다. 폴리에스터직포에 acrylic acid, methacrylic acid, methyl methacrylate를 중합반응 시켰을 때 graft 효율은 monomer 혼합용액내에 포함되어 있는 용매의 dielectric constant에 따라 상당한 차이를 나타내었다. Graft 수율은 방사선 선량과 monomer 농도 및 swelling agent의 농도에 좌우되었다. MA graft copolymer의 glass transition temperature (101$^{\circ}C$)와 melting point (238$^{\circ}C$)를 측정하였고, 정전기 효과는 frictional electricity 8,000V에서 half life가 0 sec이었으며, moisture regain는 5.6%, wicking time은 1 sec이었다.