Linear pentablock quintopolymers (I-SIDMV) with five incompatible blocks: Polystyrene, polyisoprene-1,4, poly(dimethylsiloxane), poly(tert-butyl methacrylate), and poly(2-vinylpyridine)

Panagiota Fragouli, Hermis Iatrou, David J. Lohse, Nikolaos Hadjichristidis*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Three linear pentablock quintopolymers (1-SIDMV), where S is polystyrene (PS), I polyisoprene-1,4 (PI), D poly(dimethylsiloxane) (PDMS), M poly(tert-butyl methacrylate) (PrBuM), and V poly(2-vinylpyridine) (P2VP), were synthesized by anionic polymerization high vacuum techniques. The approach involves the following: (a) The synthesis of living triblock terpolymer PS-6-PI-b-PDMSLi and diblock copolymer P2VP-&-PtBuMK by sequential polymerizations of the corresponding monomers with sec-BuLi and benzyl potassium, respectively; and (b) The selective linking of the living triblock terpolymer with the chlorosilane group of 2-(chloromethylphenyl) ethyldimethylchlorosilane (CMPDMS), followed by linking of the living block copolymer with the remaining chloromethyl group of CMPDMS. Molecular characterization carried out by size exclusion chromatography, membrane osmometry, solution (in CDCI 3 or d 8-toluene) and solid-state 1H-NMR spectroscopy indicated a high degree of molecular and compositional homogeneity. Differential scanning calorimetry results on the precursors and final polymers were discussed.

Original languageEnglish (US)
Pages (from-to)3938-3946
Number of pages9
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Volume46
Issue number12
DOIs
StatePublished - Jun 15 2008

Keywords

  • Anionic polymerization
  • DSC
  • Gel permeation chromatography
  • Hetero-functional linking agent
  • Membrane osmometry
  • Multiblock multicomponent polymers
  • NMR
  • Pentablock quintopolymers

ASJC Scopus subject areas

  • Polymers and Plastics
  • Materials Chemistry

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