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자료유형
학술저널
저자정보
Lyoo, Won-Seok (School of Textiles, Yeungnam University) Noh, Seok-Kyun (School of Chemical Engineering and Technology, Yeungnam Universit) Yeum, Jeong-Hyun (Department of Dyeing and Finishing, Kyungpook National Universit) Kang, Gu-Chan (Department of Dyeing and Finishing, Kyungpook National Universit) Ghim, Han-Do (Department of Dyeing and Finishing, Kyungpook National Universit) Lee, Jinwon (Department of Chemical Engineering, Kwangwoon Universit) Ji, Byung-Chul (Department of Dyeing and Finishing, Kyungpook National University)
저널정보
한국섬유공학회 Fibers and Polymers Fibers and polymers 제5권 제1호
발행연도
2004.1
수록면
75 - 81 (7page)

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To obtain high molecular weight (HMW) poly(methyl methacrylate) (PMMA) with high conversion, methyl methacrylate (MMA) was polymerized in suspension using a room temperature initiator, 2,2'-azobis(2,4-dimethylvaleronitrile) (ADMVN), and the effects of polymerization conditions on the polymerization behavior of MMA and the molecular parameters of PMMA were investigated. On the whole, the experimental results well corresponded to the theoretically predicted tendencies. These effects could be explained by a kinetic order of ADMVN concentration calculated by an initial rate method and an activation energy difference of polymerization obtained from the Arrhenius plot. Suspension polymerization at 25℃ by adopting ADMVN proved to be successful in obtaining PMMA of HMW (number-average degree of polymerization (P/sub n/): 30,900-36,100) and of high yield (ultimate conversion of MMA into PMMA: 83-93 %) with diminishing heat generated during polymerization. The P/sub n/ and lightness were higher and polydispersity index was lower with PMMA polymerized at lower temperatures.

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