• Time-Resolved Light Scattering Studies on the Morphology Development in Polypropylene/[artially Hydrogenated Oligo(styrene-co-indene)Blend
  • Lee JK, Lim SW, Lee DC, Yoon JS, Jin IJ, Choi HJ, Lee KH, Lee CH
  • 폴리프로필렌/부분 수소화된 Oligo(styrene-co-indene) 블렌드의 모폴로지 형성에 관한 실시간 광산란 해석
  • 이종관, 임성욱, 이동주, 윤진산, 진인주, 최형진, 이광희, 이창형
Abstract
Liquid-liquid(L-L)phase separation and development of crystalline structure in a isotactic polypropylene (iPP)/partially hydrogenated oligo(styrene-co-indene) (HSI) blend were investigated by time-resolved light scattering and optical microscopy. At a high crystallization temperature (130 ℃), the blend showed two structures of sperulite and spinodal detion of HSI molecules from the crystalline region was also occurred during crystallization. The rejected HSI molecules at the growth front of spherulites dissolved the part of L-L phase separated region at the later stage of crystallization. On the other hand, at a low crystallization temperature (90 ℃), since fast crystallization took place without rejection of HSI molecules from the blend, coarse spherulites were produced.

이소탁틱 폴리프로필렌/부분 수소화된 oligo(styrene-co-indene) (iPP/HSI) 블렌드의 액-액 상분리와 결정화과정을 실시간 광산란과 광학현미경을 이용하여 조사하였다. 높은 결정화온도 (130 ℃)에서는 결정구조보다는 선행된 스피노달 분해 구조가 구정 내에서 관찰되었다. 이 온도에서는 HSI가 구정성장면으로 배제되었으며, 그 결과 상용해에 의한 일상화가 결정화 후기단계에서 나타났다. 한편 낮은 결정화온도 (90 ℃)에서는 일상영역을 나타내며, 빠른 결정화가 일어났다. 이 때에는 대부분의 HSI가 구정내부에 존재하여 구정의 고차구조가 상대적으로 거칠었다.

Keywords: polypropylene; liquid-liquid phase separation; crystallization; partially hydrogenated oligo(styrene-co-indene)

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  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2024 Impact Factor : 0.6
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This Article

  • 1999; 23(5): 701-707

    Published online Sep 25, 1999