Polymerization of n-hexyl isocyanate with CpTiCl2(OR) (R = functional group or macromolecular chain): A route to ω-functionalized and block copolymers and terpolymers of n-hexyl isocyanate

Stylianos Mourmouris, Konstantinos Kostakis, Marinos Pitsikalis, Nikos Hadjichristidis*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

Well-defined ω-cholesteryl poly(n-hexyl isocyanate) (PHIC-Chol), as well as diblock copolymers of n-hexyl isocyanate (HIC) with styrene, PS-b-PHIC [PS = polystyrene; PHIC = poly(n-hexyl isocyanate)], and triblock terpolymers with styrene and isoprene, PS-b-PI-b-PHIC and PI-b-PS-b-PHIC (PI = polyisoprene), were synthesized with CpTiCl2(OR) (R = cholesteryl group, PS, or PS-b-PI) complexes. The synthetic strategy involved the reaction of the precursor complex CpTiCl3 with cholesterol or the suitable ω-hydroxy homopolymer or block copolymer, followed by the polymerization of HIC. The ω-hydroxy polymers were prepared by the anionic polymerization of the corresponding monomers and the reaction of the living chains with ethylene oxide. The reaction sequence was monitored by size exclusion chromatography, and the final products were characterized by size exclusion chromatography (light scattering and refractive-index detectors), nuclear magnetic resonance spectroscopy, and, in the case of PHIC-Chol, differential scanning calorimetry.

Original languageEnglish (US)
Pages (from-to)6503-6514
Number of pages12
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Volume43
Issue number24
DOIs
StatePublished - Dec 15 2005
Externally publishedYes

Keywords

  • Anionic polymerization
  • Catalytic polymerization
  • Copolymers
  • Differential scanning calorimetry (DSC)
  • N-hexyl isocyanate
  • NMR
  • Size exclusion chromatography (SEC)
  • Terpolymers

ASJC Scopus subject areas

  • Polymers and Plastics
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Polymerization of n-hexyl isocyanate with CpTiCl2(OR) (R = functional group or macromolecular chain): A route to ω-functionalized and block copolymers and terpolymers of n-hexyl isocyanate'. Together they form a unique fingerprint.

Cite this