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Zhong, J. SEBS. Encyclopedia. Available online: https://encyclopedia.pub/entry/62016 (accessed on 12 November 2026).
Zhong J. SEBS. Encyclopedia. Available at: https://encyclopedia.pub/entry/62016. Accessed November 12, 2026.
Zhong, Jack. "SEBS" Encyclopedia, https://encyclopedia.pub/entry/62016 (accessed November 12, 2026).
Zhong, J. (2026, November 06). SEBS. In Encyclopedia. https://encyclopedia.pub/entry/62016
Zhong, Jack. "SEBS." Encyclopedia. Web. 06 November, 2026.

SEBS

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SEBS is a triblock copolymer of styrene, ethylene-butylene and styrene in which glassy polystyrene end blocks anchor a rubbery midblock [1]. The midblock is a hydrogenated polybutadiene segment, so the chain carries no double bonds and resists oxidation and ultraviolet exposure better than the unsaturated parent [1]. The polystyrene domains act as physical crosslinks that hold the network at room temperature and soften above the glass transition of polystyrene, so the material is thermoplastic and reprocessable [2]. The styrene-to-rubber ratio fixes modulus and melt viscosity, while the midblock length sets elasticity [1]. Because the junctions are physical, the polymer dissolves in non-polar solvents without breaking covalent bonds [3].

triblock copolymer styrene-ethylene-butylene-styrene thermoplastic elastomer physical crosslink hydrogenated midblock
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References

  1. Denac, M.; Šmit, I.; Musil, V. Polypropylene/talc/SEBS (SEBS-g-MA) composites. Part 1. Structure. Composites Part A: Applied Science and Manufacturing 2005, 36, 1094-1101. [CrossRef]
  2. Sharma, R.; Maiti, S.N. Melt rheological properties of PBT/SEBS and reactively compatibilized PBT/SEBS/SEBS‐g‐MA polymer blends. Journal of Applied Polymer Science 2015, 132, app.41402. [CrossRef]
  3. Shen, J.; Huang, J.; Wen, Y.; Roth, S. A comprehensive review on SEBS gel as a synthetic human tissue surrogate. Journal of the Mechanical Behavior of Biomedical Materials 2026, 180, 107351. [CrossRef]
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Subjects: Polymer Science
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Update Date: 06 Nov 2026
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