Complex macromolecular architectures based on n-hexyl isocyanate and ε-caprolactone using titanium-mediated coordination polymerization

Athanasios Touris, Konstantinos Kostakis, Stylianos Mourmouris, Yasilios Kotzabasakis, Marinos Pitsikalis*, Nikolaos Hadjichristidis

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

Well-defined diblock copolymers (PS-b-P(ε-CL)) and triblock terpolymers {PS-b-PI-b-P(ε-CL), PI-b-PS-b-P(ε-CL)} of polystyrene, PS, poly(ε-caprolactone), P(ε-CL), and polyisoprene, PI, were synthesized using CpTiCl2(OP) (P = PS, PS-b-PI, or PI-b-PS) as macroinitiator. Graft copolymers having polybutadiene, PBd, backbone and poly(n-hexyl isocyanate), PHIC, or P(ε-CL) branches {PBd-g-PHIC and PBd-g-P(ε-CL)} as well as block-graft terpolymers {PS-b-(PI-g-PHIC), PS-b-[PI-g-P(ε-CL)]} were also synthesized by performing hydroboration/oxidation reactions on the polydiene backbone and by transforming the introduced hydroxyl groups to initiation sites by reaction with CpTiCl3. Finally, PS(PHIC) 2 and PS[P(ε-CL)]2 3-miktoarm star copolymers were synthesized using a heterofunctional initiator bearing one initiation site for atom transfer radical polymerization and two for titanium-mediated coordination polymerization. All intermediates and final products were characterized by size exclusion chromatography, equipped with refractive index and light scattering detectors, membrane osmometry, and 1H NMR spectroscopy.

Original languageEnglish (US)
Pages (from-to)2426-2438
Number of pages13
JournalMacromolecules
Volume41
Issue number7
DOIs
StatePublished - Apr 8 2008

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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