Relationship between polydispersity of polymer glycols and mechanical properties of polyurethane elastomers

Yasuhiro Okuhara, Ken Kojio, Mutsuhisa Furukawa

研究成果: 会議への寄与タイプ論文

抄録

A series of eight blend poly(oxytetramethylene) glycols (PTMGs) with different polydispersity were prepared from three kinds of PTMGs with the number-average molecular weights of 278 or 642,1004, and 1918. The PUEs were prepared from the blend polymer glycols, 4,4'-diphenylmethane diisocyanate and 1,4-butanediol by a prepolymer method. The hard segment content of all PUEs was ca. 37 wt%. Thermal and mechanical properties of the PUEs were characterized by hardness, density, swelling test, gel permeation chromatography, differential scanning calorimetry, dynamic viscoelastic properties measurements, and tensile testing. With a broadening polydispersity of the soft segment, Tg of the soft segment shifted to low temperature, indicating that the phase separation became stronger. This induced a increasing Young's modulus and hardness of PUEs. Tensile strength and strain at break for the PUEs including the lowest molecular weight component (PTMG250) showed larger and smaller magnitudes, respectively. This is because PTMG250 played as physical crosslinking points and made network structure become heterogeneous.

元の言語英語
ページ数1
出版物ステータス出版済み - 12 1 2005
イベント54th SPSJ Annual Meeting 2005 - Yokohama, 日本
継続期間: 5 25 20055 27 2005

その他

その他54th SPSJ Annual Meeting 2005
日本
Yokohama
期間5/25/055/27/05

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Polydispersity
Glycols
Elastomers
Polyurethanes
Hardness
Molecular weight
Mechanical properties
Tensile strain
Tensile testing
Gel permeation chromatography
Polymers
Polymer blends
Phase separation
Crosslinking
Swelling
Differential scanning calorimetry
Tensile strength
Thermodynamic properties
Elastic moduli
Temperature

All Science Journal Classification (ASJC) codes

  • Engineering(all)

これを引用

Okuhara, Y., Kojio, K., & Furukawa, M. (2005). Relationship between polydispersity of polymer glycols and mechanical properties of polyurethane elastomers. 論文発表場所 54th SPSJ Annual Meeting 2005, Yokohama, 日本.

Relationship between polydispersity of polymer glycols and mechanical properties of polyurethane elastomers. / Okuhara, Yasuhiro; Kojio, Ken; Furukawa, Mutsuhisa.

2005. 論文発表場所 54th SPSJ Annual Meeting 2005, Yokohama, 日本.

研究成果: 会議への寄与タイプ論文

Okuhara, Y, Kojio, K & Furukawa, M 2005, 'Relationship between polydispersity of polymer glycols and mechanical properties of polyurethane elastomers' 論文発表場所 54th SPSJ Annual Meeting 2005, Yokohama, 日本, 5/25/05 - 5/27/05, .
Okuhara Y, Kojio K, Furukawa M. Relationship between polydispersity of polymer glycols and mechanical properties of polyurethane elastomers. 2005. 論文発表場所 54th SPSJ Annual Meeting 2005, Yokohama, 日本.
Okuhara, Yasuhiro ; Kojio, Ken ; Furukawa, Mutsuhisa. / Relationship between polydispersity of polymer glycols and mechanical properties of polyurethane elastomers. 論文発表場所 54th SPSJ Annual Meeting 2005, Yokohama, 日本.1 p.
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