한국섬유공학회지 (Textile Science and Engineering)

  • 제35권1호
  • /
  • Pages.38-43
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  • 1998
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  • 1225-1089(pISSN)
  • /
  • 2288-6419(eISSN)
한국섬유공학회 (The Korean Fiber Society)
권호 표지

글리콜리드 용융중합시 폴리글리콜산의 열적 거동

Thermal Behaviour of Polyglycolic Acid in Melt Polymerization of Glycolide

  • 발행 : 1998.01.01

⟨ 이전 논문 다음 논문 ⟩

초록

Thermal behaviour of polyglycolic acid in melt polymerization of glycolide was investigated as a function of lauryl alcohol content. There were showed three endothermic peaks such as glycolide melting peak, lower molecular weight melting (oligomer) peak and higher molecular weight melting peak at early stage on glycolide melt polymerization under lauryl alcohol. But there were showed only two peaks, glycoside melting peak and lower molecular weight melting peak without laurel alcohol. Conversion increased slowly with the reaction time up to 50 minutes, and then gave a sudden increase above that. The reaction time to disappear in glycolide melting peak during polymerization was shortened with the increase of lauryl alcohol content. Zero-shear viscosity of polyglycolic acid decreased with the increase of free acid content in glycolide.

키워드

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