Synthesis and characterization of model polybutadiene-1,4-6- polydimethylsiloxane-b-polybutadiene-1,4 copolymers

Andrés E. Ciolino, Marcelo A. Villar, Enrique M. Vallés*, Nikolaos Hadjichristidis

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

Model copolymers of poly(butadiene) (PB) and poly(dimethylsiloxane) (PDMS), PB-b-PDMS-b-PB, were synthesized by sequential anionic polymerization (high vacuum techniques) of 1,3-butadiene and hexamethylciclotrisiloxane (D 3) on sec-BuLi followed by chlorosilane-coupling chemistry. The synthesized copolymers were characterized by nuclear magnetic resonance ( 1H NMR), size-exclusion chromatography (SEC), thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). SEC and 1H NMR results showed low polydispersity indexes (M w/Mn) and variable siloxane compositions, whereas DSC and TGA experiments indicated that the thermal stability of the triblock copolymers depends on the PDMS composition.

Original languageEnglish (US)
Pages (from-to)2726-2733
Number of pages8
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Volume45
Issue number13
DOIs
StatePublished - Jul 1 2007

Keywords

  • Anionic polymerization
  • Block copolymers
  • Characterization
  • High vacuum techniques
  • Model triblock copolymers
  • Polybutadiene-1,4
  • Polydimethylsiloxane

ASJC Scopus subject areas

  • Materials Chemistry
  • Polymers and Plastics

Fingerprint

Dive into the research topics of 'Synthesis and characterization of model polybutadiene-1,4-6- polydimethylsiloxane-b-polybutadiene-1,4 copolymers'. Together they form a unique fingerprint.

Cite this