Novel well-defined star homopolymers and star-block copolymers of poly(n-hexyl isocyanate) by anionic polymerization

Georgia Zorba, Marinos Pitsikalis*, Nikolaos Hadjichristidis

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Anionic polymerization high-vacuum techniques and appropriate multi-functional initiators/additives were employed for the synthesis of novel star structures of poly(n-hexyl isocyanate) (PHIC). A new trifunctional initiator prepared by the reaction of tris(4-isocyanatophenyl)methane with benzyl sodium was used for the synthesis of three-arm star PHIC. Divinyl benzene and the core-first or the arm-first core-first (in-out) approach were utilized for the synthesis of multiarm star homopolymers, (PHIC)n, star-block copolymers, (PHIC-6-PI)n, and miktoarm star copolymers, (PS) n(PHIC)n, where PS is polystyrene. The molecular characteristics obtained by size-exclusion chromatography, equipped with refractive index and two-angle light scattering detectors, nuclear magnetic resonance, spectroscopy, and dilute solution viscometry showed that well-defined structures were synthesized in this study.

Original languageEnglish (US)
Pages (from-to)2387-2399
Number of pages13
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Volume45
Issue number12
DOIs
StatePublished - Jun 15 2007

Keywords

  • Anionic polymerization
  • Gel permeation chromatography (GPC)
  • Miktoarm stars
  • Poly(n-hexyl isocyanate)
  • Star polymers
  • Star-block copolymers

ASJC Scopus subject areas

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

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