Metathesis-driven scrambling reactions between polybutadiene or naturally occurring polyisoprene and olefin-containing polyurethane

Tomoyuki Ohishi, Kaori Suyama, Shigehisa Kamimura, Masahide Sakada, Keiichi Imato, Seiichi Kawahara, Atsushi Takahara, Hideyuki Otsuka

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Controlled scrambling reactions of polybutadiene and olefin-containing polyurethane prepared by step-growth or chain-growth polymerization were accomplished via macromolecular olefin cross-metathesis in the presence of Grubbs' second-generation catalyst to yield scrambled copolymers with different thermal and mechanical properties. In addition, naturally occurring polyisoprene and olefin-containing polyurethane were successfully scrambled, demonstrating that these polymers can be used to synthesize natural/synthetic hybrid materials by the cross-metathesis reaction. Effects of reaction time, solvent, and homopolymer structure on these scrambling reactions were investigated. This metathesis-based approach facilitates the precise control of the scrambling reactions under the applied reaction conditions, thus affording the desired polymer structures with compositions ranging from multiblock to random compositions and enhanced mechanical properties.

Original languageEnglish
Pages (from-to)145-153
Number of pages9
JournalPolymer (United Kingdom)
Volume78
DOIs
Publication statusPublished - 2015 Nov 5
Externally publishedYes

Fingerprint

Polyisoprenes
Polyurethanes
Polybutadienes
Alkenes
Olefins
Polymers
Mechanical properties
Hybrid materials
Homopolymerization
Chemical analysis
Thermodynamic properties
Copolymers
Polymerization
Catalysts
polybutadiene

Keywords

  • Dynamic covalent chemistry
  • Naturally occurring polyisoprene
  • Olefin metathesis

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics

Cite this

Metathesis-driven scrambling reactions between polybutadiene or naturally occurring polyisoprene and olefin-containing polyurethane. / Ohishi, Tomoyuki; Suyama, Kaori; Kamimura, Shigehisa; Sakada, Masahide; Imato, Keiichi; Kawahara, Seiichi; Takahara, Atsushi; Otsuka, Hideyuki.

In: Polymer (United Kingdom), Vol. 78, 05.11.2015, p. 145-153.

Research output: Contribution to journalArticle

Ohishi, Tomoyuki ; Suyama, Kaori ; Kamimura, Shigehisa ; Sakada, Masahide ; Imato, Keiichi ; Kawahara, Seiichi ; Takahara, Atsushi ; Otsuka, Hideyuki. / Metathesis-driven scrambling reactions between polybutadiene or naturally occurring polyisoprene and olefin-containing polyurethane. In: Polymer (United Kingdom). 2015 ; Vol. 78. pp. 145-153.
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AU - Sakada, Masahide

AU - Imato, Keiichi

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