Macromolecular Research

The Polymer Society of Korea (한국고분자학회)
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Viscoelastic and Gelation Studies of SEBS Thermoplastic Elastomer in Different Hydrocarbon Oils

  • Kim Jin-Kuk (Department of Polymer Science and Engineering, Research Institute of Industrial Technology, Gyeongsang National University) ;
  • Paglicawan Marissa A. (Department of Polymer Science and Engineering, Research Institute of Industrial Technology, Gyeongsang National University) ;
  • Balasubramanian Maridass (Department of Polymer Science and Engineering, Research Institute of Industrial Technology, Gyeongsang National University)
  • Published : 2006.06.01
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Abstract

Poly[styrene-b-(ethylene-co-butylene)-b-styrene](SEBS) triblock copolymer was studied by dissolving the ethylene butylene midblock in selective hydrocarbon oils. These oils differ in their aromatic, paraffinic and naphthenic content. Dynamic rheological studies showed that the storage modulus (G') exceeded the loss modulus (G') for all the gels over the entire range of frequency, thereby confirming them as physical gels. However, the behavior of G' and G' as a function of frequency depended primarily on the oil type. The gelation melting temperature decreased drastically with increased oil aromaticity. Small angle X-ray scattering studies revealed that the maximum interdomain interference shifted to a higher angle depending on the composition and type of hydrocarbon oil.

Keywords

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