End functionalization of styrene-butadiene rubber with poly(ethylene glycol)-poly(dimethylsiloxane) terminator

Eunkyoung Kim, Eunha Lee, Insun Park, Taihyun Chang

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

A polar polydimethylsiloxane terminator was prepared and reacted with living copolymer anion of styrene and butadiene, to synthesize end-functionalized styrene-butadiene rubber (SBR). As a polar functional terminator, poly(ethylene glycol)-poly(dimethylsiloxane) block copolymer (PEG-PDMS) containing a chlorosilyl moiety at one chain end (1) was synthesized by two-step hydrosilylation. End capping of poly(styrene-butadiene) living anion with PEG-PDMS terminator (1) afforded polymers with polar poly(dimethylsiloxane) end groups. PEG-PDMS terminated SBR, SBR-1, showed higher interaction with silica particles by microscophy and chromatography. Dynamic-mechanical analysis on silica composites of SBR-1 strongly supports the assumption that the PEG-PDMS end groups behave as polar functional groups, showing increase of the glass transition temperature (Tg) and storage modulus in the composite of SBR-1 with silica particles. The SBR-1/silica composite showed lower tan δ at 60°C and higher tan δ at 0°C as compared to SBR-Sn/silica composite.

Original languageEnglish
Pages (from-to)674-681
Number of pages8
JournalPolymer Journal
Volume34
Issue number9
DOIs
Publication statusPublished - 2002 Dec 1

All Science Journal Classification (ASJC) codes

  • Polymers and Plastics
  • Materials Chemistry

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