Anionic copolymerization of styrenic-tipped macromonomers: A route to novel triblock-comb copolymers of styrene and isoprene

Spiros Christodoulou, Hermis Iatrou, David J. Lohse*, Nikolaos Hadjichristidis

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

The following triblock-comb copolymers of isoprene (I) and styrene (S) - PS-b-(PI-g-PI)-b-PS, PS-b-[PI-g-(PI-b-PS)]-b-PS, and (PS-g-PS)-b-(PI-g-PI)-b- (PS-g-PS) (where PS is polystyrene and PI is polyisoprene) - with PS contents of 20-30% were synthesized with high-vacuum techniques and the anionic copolymerization of styrenic-tipped macromonomers with I and S. The macromonomers, prepared by the reaction of living PI or PS with 4-(chlorodimethylsilyl) styrene, were used without isolation. Molecular characterization by size exclusion chromatography, size exclusion chromatography/two-angle laser light scattering, and NMR spectroscopy indicated that the triblock-comb copolymers had high molecular and compositional homogeneity.

Original languageEnglish (US)
Pages (from-to)4030-4039
Number of pages10
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Volume43
Issue number18
DOIs
StatePublished - Sep 15 2005

Keywords

  • Anionic polymerization
  • Block-graft copolymers
  • Light scattering
  • NMR
  • Size exclusion chromatography
  • Styrenic macromonomers

ASJC Scopus subject areas

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

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