Microphase-separated structure and dynamic viscoelastic properties of polyurethanes elastomers prepared at various temperatures and cross-linking agent contents

Ken Kojio, Shun Matsumura, Takuya Komatsu, Shuhei Nozaki, Suguru Motokucho, Mutsuhisa Furukawa, Kohji Yoshinaga

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1 Citation (Scopus)

Abstract

The relationship between a microphase-separated structure and dynamic viscoelastic properties of polyurethane elastomers (PUEs) prepared at various temperatures and cross-linking agent contents were investigated. The PUEs were synthesized with poly(oxytetramethylene) glycol (PTMG), 4,4'-diphenylmethane diisocyanate (MDI) and 1,4-butanediol (BD) and a mixture of BD and 1,1,1-trimethylol propane (TMP) by a prepolymer method. The PUEs are in the strong-segregation limit. The microphase-separated structure was investigated using Fourier-transform infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC), small-angle x-ray scattering (SAXS) and atomic force microscope (AFM). The extent of microphase separation of the PUEs became stronger and weaker with increases in curing temperature and trifunctional TMP content, respectively. The consistent results obtained in this study would be quite helpful to design the desirable PUEs.

Original languageEnglish
Pages (from-to)143-149
Number of pages7
JournalNihon Reoroji Gakkaishi
Volume42
Issue number2
DOIs
Publication statusPublished - 2014
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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