화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Macromolecular Research, Vol.10, No.3, 140-144, June, 2002
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Dispersion Polymerization of Acrylamide in Methanol/Water Media
Ki-Chang Lee†, Seung-Eun Lee, and Bong-Keun Song1
  • Department of Polymer Sci. & Eng., Engineering Research Institute, Gyeongsang National University, Jinju 660-701, Korea
  • 1Paper Research Lab., Korea Institute of Chemical Technology, P.O. BOX 107, Yusung, Taejon 305-600, Korea
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Dispersion polymerization of acrylamide was carried out in the media of methyl alcohol/H2O mixtures using hydroxypropyl cellulose and ammonium persulfate as steric stabilizer and initiator, respectively. The effects of concentrations of initiator and steric stabilizer, amount of monomer, polymerization temperature, methyl alcohol/H2O ratio, and purification of monomer and nitrogen purge on the particle size of the latices and molecular weight of the polymers were investigated. The average particle diameter increased with increasing concentration of initiator, water content in methyl alcohol/H2O media, and polymerization temperature, but decreased with monomer and stabilizer concentrations. The viscosity average molecular weight increased with increasing concentrations of monomer, steric stabilizer, and water content in dispersion media, but decreased with initiator concentration and polymerization temperature. The PAM polymers prepared with the purified monomer and the nitrogen purging before the reaction showed the highest molecular weight.
Keywords:dispersion polymerization of acrylamide;methyl alcohol/H2O media;particle size;viscosity average molecular weight
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