Triblock copolymers and pentablock terpolymers of n-hexyl isocyanate with styrene and isoprene: Synthesis, characterization, and thermal properties

Aggelos Vazaios, Marinos Pitsikalis, Nikolaos Hadjichristidis*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

Triblock copolymers and pentablock terpolymers of n-hexyl isocyanate (H), styrene (S), and isoprene (I) of the type HSH (six samples, Mn:49-163 K, weight % of H:5-59), HIH (two samples, Mn:75 and 83.4 K, weight % of H:16 and 40), HSISH (one sample, Mn:79.4 K, weight % of H:13), and HISIH (one sample, Mn:128 K, weight % of H:25) were synthesized by high-vacuum techniques in tetrahydrofuran at -98°C with the sodium naphthalene/sodium tetraphenylborate initiating system. All materials were characterized by size exclusion chromatography, membrane osmometry, and 1H NMR. The combined molecular characterization results revealed a high degree of molecular and compositional homogeneity. The thermal properties of the synthesized materials were examined by thermogravimetric analysis and differential scanning calorimetry.

Original languageEnglish (US)
Pages (from-to)3094-3102
Number of pages9
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Volume41
Issue number19
DOIs
StatePublished - Oct 1 2003

Keywords

  • Anionic polymerization
  • Block copolymers
  • Block terpolymers
  • Thermal properties
  • n-hexyl isocyanate

ASJC Scopus subject areas

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

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