TY - JOUR
T1 - Microphase-separated structure and dynamic viscoelastic properties of polyurethanes elastomers prepared at various temperatures and cross-linking agent contents
AU - Kojio, Ken
AU - Matsumura, Shun
AU - Komatsu, Takuya
AU - Nozaki, Shuhei
AU - Motokucho, Suguru
AU - Furukawa, Mutsuhisa
AU - Yoshinaga, Kohji
PY - 2014
Y1 - 2014
N2 - 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.
AB - 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.
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U2 - 10.1678/rheology.42.143
DO - 10.1678/rheology.42.143
M3 - Article
AN - SCOPUS:84900423802
SN - 0387-1533
VL - 42
SP - 143
EP - 149
JO - Nihon Reoroji Gakkaishi
JF - Nihon Reoroji Gakkaishi
IS - 2
ER -