Article
  • Linear Viscoelastic Properties of Rubber Modified Thermoplastic
  • Shin GS, Kim YJ, Kim CK, Kim JH, Kim BK
  • 고무개질 열가소성 수지의 선형점탄성
  • 신귀숙, 김영진, 김창기, 김준형, 김병규
Abstract
Melt blends of SAN(styrene-co-acrylonitrile) with SAN-graft-polybutadiene( PB) rubber were prepared using a Brabender Plasticorder. Melt state as well as solid state linear viscoelastic properties were measured using an RDS rheometer. With rubber addition, melt viscosity increased drastically, with yield at ≥20wt% rubber content, together with the increased pseudoplasticity at high frequencies. The lower glass transion temperature (Tg) and the higher Tg of g-ABS were respectively decreased and increased with narrowed transition zone in the blends. This phenomenon was interpreted in terms of graft SAN-PB phase separation.

SAN(styrene-co-acrylonitrile)과 SAN-graft-polybutadiene(PB) (g-ABS)을 Brabender Plasticorder에서 용융 블렌드 하여, 이들의 용응상태 및 고체 상태에서의 선형점탄성 거동을 RDS rheometer로 측정하였다. SAN에 g-ABS가 첨가됨에 따라 초기점도가 현저히 증가하였으며. 특히 g-ABS≥20wt%에서 항복거동을 나타내었고, 높은 진동주파수 범위에서는 의소성이 뚜렷하게 증가하였다. 또한 SAN/g-ABS 블렌드에서 SAN의 함량이 증가함에 따라 g-ABS의 lower Tg는 일률적으로 감소하는 경향을, higher Tg는 다소 증가하는 경향을 보였으며, 이를 SAN 첨가에 따른 g-ABS의 graft SAN-PB 상분리로 해석하였다.

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  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2023 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 1992; 16(2): 160-165

    Published online Mar 25, 1992