Synthesis of model multigraft copolymers of butadiene with randomly placed single and double polystyrene branches

Maria Xenidou, Nikos Hadjichristidis*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

71 Scopus citations

Abstract

Model multigraft copolymers of butadiene (Bd) and styrene (St) with randomly placed trifunctional, poly(Bd-g-St), and tetrafunctional branch points, poly(Bd-g-St2), were synthesized by hydrosilylation of polybutadiene (∼92 wt % 1,4) with HSiMe2Cl and HSiMeCl2, respectively, followed by reaction of the resultant silicon-chloride groups along the backbone with polystyryllithium (PSLi). The extent of hydrosilylation was controlled by appropriate adjustment of the [silane]/[C=C] ratio. Characterization carried out by size exclusion chromatography (UV and RI detector), low-angle laser light scattering, differential refractrometry, and NMR spectroscopy indicated that the synthesized branched molecules have a high degree of molecular and compositional homogeneity.

Original languageEnglish (US)
Pages (from-to)5690-5694
Number of pages5
JournalMacromolecules
Volume31
Issue number17
StatePublished - Aug 25 1998
Externally publishedYes

ASJC Scopus subject areas

  • Materials Chemistry

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