Article
  • Synthesis and Applications of Reactive Polymer Modifiers for Asphalt(1)
  • Hwang K, Ahn W, Suh S, Ha K
  • 아스팔트용 반응성 고분자 개질제 합성 및 적용(1)
  • 황기섭, 안원술, 서숭혁, 하기룡
Abstract
This study is on the synthesis of reactive polymer modifiers by emulsion polymerization to improve properties of asphalt for paving. Styrene, methyl methacrylate (MMA), isoprene and glycidyl methacrylate (GMA) which has epoxy ring to react with carboxyl group of asphaltene were used to synthesize polymer modifiers. Modifiers with various composition were tested miscibility with asphalt. Modifiers which showed good miscibility with asphalt were investigated by DSC for Tg. Existence of epoxy rings and their reaction with asphaltene were investigated by FTIR. Molecular structures of synthesized modifiers were confirmed by 1H-NMR. The synthesized modifiers which showed good miscibility had their Tg's in the range of 37.5∼56.5 ℃ and had isoprene contents of 30 wt%. They showed good miscibility in the 1 and 2 wt% concentrations, but not in the 3 wt% concentration.

도로 포장용 아스팔트의 성능을 개선하기 위하여 유화중합법으로 반응성 고분자 개질제들을 합성하였다. Styrene, methyl methacrylate(MMA) 및 isoprene과 아스팔트의 아스팔텐 성분의 carboxyl group과 반응시키기 위하여 epoxy ring을 가진 glycidyl methacrylate(GMA)를 단량체로 사용하였다. 단량체의 조성을 다양하게 변화시켜 개질제들을 중합하고, 중합된 개질제와 아스팔트의 상용성을 검토하였다. 혼합이 잘 되는 개질제들에 대하여 시차주사열량계(DSC)로 Tg를 측정하였다. 합성 후 epoxy ring의 존재 여부와 아스팔텐과의 반응성을 알아보기 위해 푸리에 변환 적외선 분광기(FTIR)를 이용하였고, 핵자기공명법(NMR)으로 개질제 분자 구조의 해석을 행하였다. 아스팔트와 혼합이 잘 이루어지는 개질제들은 Tg가 37.5∼56.5 ℃ 사이이며, isoprene의 비율이 30 wt%이었다.

Keywords: asphalt modifier; emulsion polymerization; miscibility

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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

  • 2007; 31(1): 68-73

    Published online Jan 25, 2007

  • Received on Oct 18, 2006
  • Accepted on Dec 6, 2006