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Synthesis of poly(styrene-b-isobutylene-b-styrene) triblock copolymer by ATRP

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A poly(styrene-b-isobutylene-b-styrene) triblock copolymer has been prepared by a two-step process. Polyisobutylene with Mn= 6600 and Mw/Mn= 1.12 functionalized with phenol at both ends was reacted with 2-bromopropionyl chloride to form a macroinitioator for atom transfer radical polymerization (ATRP). The synthesized difunctional PIB macroinitiator was subsequently heated with styrene xylene solution in the second step to 110°C under conditions for ATRP using the copper coordination complex CuBr/bipyridine. Both the macroinitiator and the triblock copolymer were characterized by 1H NMR and SEC. The triblock copolymer with around 25% polystyrene was found to have a narrow molecular weight distribution of 1.20.

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Received: 4 October 1998/Revised version: 29 October 1998/Accepted: 3 November 1998

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Jankova, K., Kops, J., Chen, X. et al. Synthesis of poly(styrene-b-isobutylene-b-styrene) triblock copolymer by ATRP. Polymer Bulletin 41, 639–644 (1998). https://doi.org/10.1007/s002890050412

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  • DOI: https://doi.org/10.1007/s002890050412

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