Article
  • Synthesis, Characterization and Haemocompatibility of Poly(styrene-b-isobutylene-b-styrene) Triblock Copolymers
  • Ren P, Wu YB, Guo WI, Li SX, Mao J, Xiao F, Li K
  • 폴리(스티렌-이소부틸렌-스티렌) 삼중블록 공중합체의 합성, 분석 및 혈액적합성
  • Ren P, Wu YB, Guo WI, Li SX, Mao J, Xiao F, Li K
Abstract
The synthesis of well-defined poly(styrene-b-isobutylene-b-styrene) (SIBS) triblock copolymers was accomplished by cationic sequential block copolymerization of isobutylene (IB) with styrene (St) using 1,4-di(2-chloro-2-propyl)benzene (DCC)/TiCl4 /2,6-di-tert-butylpyridine(DtBP) as an initiating system in methyl chloride (CH3Cl)/methylcyclohexane(MeChx) (50/50 v/v) solvent mixture at -80 ℃. The triblock copolymers exhibited excellent thermoplastic and elastomeric characteristics. Tensile strengths and Shore hardness increased with increasing polystyrene (PS) content, while elongation at break decreased. The blood-compatibility of SIBS was assessed by SEM observation of the platelet adhesion, blood clotting time and haemolysis ratio. The haemolysis ratios were below 5% which met the medical materials standard. The platelet adhesion test further indicated that SIBS block copolymers had a good blood compatibility.

Keywords: poly(styrene-b-isobutylene-b-styrene); haemocompatibility; thermoplastic elastomer; living/controlled cationic polymerization

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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

  • 2011; 35(1): 40-46

    Published online Jan 25, 2011

  • Received on Aug 4, 2010
  • Accepted on Oct 21, 2010