A kinetic study of the formation of polystyrene stars using 1,2-bis (trichlorosilyl) ethane

Donna J. Frater, Jimmy W. Mays*, Christian Jackson, Stella Sioula, Vasilis Efstradiadis, Nikolaos Hadjichristidis

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

The kinetics of formation of a chlorosilane-linked polystyrene six-arm star is reported. The precursor arm material (Mn = 88,000) was made using anionic polymerization in benzene. Prior to addition to the 1,2-bis(trichlorosilyl) ethane linking agent, the anions were endcapped with about five units of isoprene. Size exclusion chromatography using multiangle laser light scattering and viscosity detectors was utilized for characterization. This technique has allowed the molecular weights, radii of gyration, and intrinsic viscosities to be measured for star components in aliquots taken from the reactor at various times. It was found that four-arm star is formed within 30 min after the addition of the chlorosilane linking agent. There is a linear relationship between the logarithm of molecular weight of the star samples and logarithm of time of the reaction after the formation of the four-arm star.

Original languageEnglish (US)
Pages (from-to)587-594
Number of pages8
JournalJournal of Polymer Science, Part B: Polymer Physics
Volume35
Issue number4
DOIs
StatePublished - Jan 1 1997

Keywords

  • Chlorosilanes
  • Kinetics
  • Linking reactions
  • Star polymers

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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