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유승운,박환만,이수,문규열 國立 昌原大學校 基礎科學硏究所 1993 基礎科學硏究所論文集 Vol.4 No.-
To obtain polyacrylonitrile of high molecular weight (>1,000,000) under optimum solution polymerization condition in dimethylsufoxide, which has very low chain transfer constant, using an azobisisobutyronitrile as initiator, we examined the effect of water content in reaction mixture, and the concentration of monomer and initiator on the conversion rate and polymer properties. As a result, homo PAN with Mw=1,330,000 and about 12% of conversion was prepared under the condition of[AN]=7 mole/1 and[AIBN]=6.0x10-4 mole/1 at 50℃. Copolymers with AN and other vinylic monomers such as methyl acrylate, itaconic acid, and acrylamide, having considerably high molecular weight were also prepared under similar condition. These polymer solutions after direct dilution with DMSO were suitable enough to be applied to high strength fiber formation by dry-jet-wet spinning technique. Tensile strength was improved more than twice as high as that of common acrylic fiber used as apparel.