Study on The Thermal Properties of Poly(methyl methacrylate) and Poly($\alpha$-methylstyrene-co-acrylonitrile) Mix tures

Poly(methyl methacrylate)와 Poly($\alpha$-methylstyrene-co-acrylonitrile) 혼합물의 열적특성에 관한 연구

  • Moon, Deog-Ju (Department of Chemicel Engineering. Dong-A University) ;
  • Kim, Byung-Chul (Department of Chemicel Engineering. Dong-A University) ;
  • Kim, Dong-Keun (Department of Chemicel Engineering. Dong-A University) ;
  • Seul, Soo-Duk (Department of Chemicel Engineering. Dong-A University) ;
  • Sohn, Jin-Eon (Department of Chemicel Engineering. Dong-A University)
  • 문덕주 (동아대하교 공과대학 화학공학과) ;
  • 김병철 (동아대하교 공과대학 화학공학과) ;
  • 김동건 (동아대하교 공과대학 화학공학과) ;
  • 설수덕 (동아대하교 공과대학 화학공학과) ;
  • 손진언 (동아대하교 공과대학 화학공학과)
  • Published : 1988.12.31

Abstract

The thermal degradation of poly(methyl methacrylate)(PMMA) and poly($\alpha$-methylstyrene-co-acrylonitrile)(SAN) mixtures were carried out using the thermogravimetry(TG) and differential scanning calorimetry(DSC) in the stream of nitrogen and air with 50 ml/min at the various heating rate from 4 to $20^{\circ}C/min$ and temperature from 20 to $500^{\circ}C$. The value of activation energies of thermal degradation determined by TG and DSC in the various PMMA/SAN mixtures were 34-54 kcal/mol in the stream of nitrogen. The value of activation energy of SAN 60% mixture were appeared high in comparison with addition rule. PMMA/SAN mixtures by the analysis of infrared spectrophotometer were decomposed by main chain scission in the stream of nitrogen.

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