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Glass Transition Temperature of Poly(methyl methacrylate) Obtained with Ferrocene-Based Diimine Pd(II) Catalyst  

박태학 (경북대학교 고분자공학과)
이동호 (경북대학교 고분자공학과)
김태정 (경북대학교 공업화학과)
박동규 (경북대학교 공업화학과)
Publication Information
Polymer(Korea) / v.26, no.3, 2002 , pp. 410-414 More about this Journal
Abstract
The late transition Pd catalyst of low oxophilicity that has ferrocene -based diimine ligand for stabilization of center metal had been synthesized and applied for the polymerization of methyl methacrylate (MMA). In the presence of triisobutylaluminium (TIBA) for impurity scavenger, the effects of polymerization temperature and [TIBA]/[Pd] mole ratio on the yield and glass transition temperature ($T_g$) of PMMA had been examined. For 40~$50^{\circ}C$ of polymerization temperature and 2000~3000 of [TIBA]/[Pd] mole ratio, higher polymer yields were obtained. It was observed that ($T_g$) of PMMA is almost independent to the polymerization temperature but influenced by the [TIBA]/[Pd] mole ratio. With the examination of($T_g$) of PMMA with the structure of polymer, it had been found that T$_{g}$ of PMMA exhibits a linear relationship with the isotacticity of polymer.r.
Keywords
glass transition temperature; poly(methyl methacrylate); Pd catalyst; tacticity;
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