Crystallization behavior of hard segment in polyurethane elastomers

Ken Kojio; Shun Matsumura; Shuhei Nozaki; Suguru Motokucho; Mutsuhisa Furukawa; Kohji Yoshinaga; Atsushi Takahara

doi:10.1295/koron.71.608

Crystallization behavior of hard segment in polyurethane elastomers

Ken Kojio, Shun Matsumura, Shuhei Nozaki, Suguru Motokucho, Mutsuhisa Furukawa, Kohji Yoshinaga, Atsushi Takahara

Department of Applied Molecular Chemistry

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

The crystalline hard segment models of segmented polyurethane elastomers are made of 4,4'-diphenylmethane diisocyanate (MDI) and 1,4-butanediol (BD). Here we investigate the crystalline behavior of polyurethane that in addition contain 1,1,1-trimethylol propane (TMP), poly(oxytetramethylene) glycol (PTMG), and polyethylene glycol (PEG). The melting points (T_m) of crystallized MDI-BD units decreased with increasing TMP contents and increased with increasing PTMG contents, respectively. A decrease in molecular weight of PTMG and incorporation of PEG decreased T_m. These results indicate that incorporation of a third component would cause to form the well-ordered crystal being closed to equilibrium state.

Original language	English
Pages (from-to)	608-614
Number of pages	7
Journal	KOBUNSHI RONBUNSHU
Volume	71
Issue number	11
DOIs	https://doi.org/10.1295/koron.71.608
Publication status	Published - 2014

All Science Journal Classification (ASJC) codes

Chemical Engineering (miscellaneous)
Materials Science (miscellaneous)
Environmental Science(all)
Polymers and Plastics

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10.1295/koron.71.608

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title = "Crystallization behavior of hard segment in polyurethane elastomers",

abstract = "The crystalline hard segment models of segmented polyurethane elastomers are made of 4,4'-diphenylmethane diisocyanate (MDI) and 1,4-butanediol (BD). Here we investigate the crystalline behavior of polyurethane that in addition contain 1,1,1-trimethylol propane (TMP), poly(oxytetramethylene) glycol (PTMG), and polyethylene glycol (PEG). The melting points (Tm) of crystallized MDI-BD units decreased with increasing TMP contents and increased with increasing PTMG contents, respectively. A decrease in molecular weight of PTMG and incorporation of PEG decreased Tm. These results indicate that incorporation of a third component would cause to form the well-ordered crystal being closed to equilibrium state.",

author = "Ken Kojio and Shun Matsumura and Shuhei Nozaki and Suguru Motokucho and Mutsuhisa Furukawa and Kohji Yoshinaga and Atsushi Takahara",

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T1 - Crystallization behavior of hard segment in polyurethane elastomers

AU - Kojio, Ken

AU - Matsumura, Shun

AU - Nozaki, Shuhei

AU - Motokucho, Suguru

AU - Furukawa, Mutsuhisa

AU - Yoshinaga, Kohji

AU - Takahara, Atsushi

PY - 2014

Y1 - 2014

N2 - The crystalline hard segment models of segmented polyurethane elastomers are made of 4,4'-diphenylmethane diisocyanate (MDI) and 1,4-butanediol (BD). Here we investigate the crystalline behavior of polyurethane that in addition contain 1,1,1-trimethylol propane (TMP), poly(oxytetramethylene) glycol (PTMG), and polyethylene glycol (PEG). The melting points (Tm) of crystallized MDI-BD units decreased with increasing TMP contents and increased with increasing PTMG contents, respectively. A decrease in molecular weight of PTMG and incorporation of PEG decreased Tm. These results indicate that incorporation of a third component would cause to form the well-ordered crystal being closed to equilibrium state.

AB - The crystalline hard segment models of segmented polyurethane elastomers are made of 4,4'-diphenylmethane diisocyanate (MDI) and 1,4-butanediol (BD). Here we investigate the crystalline behavior of polyurethane that in addition contain 1,1,1-trimethylol propane (TMP), poly(oxytetramethylene) glycol (PTMG), and polyethylene glycol (PEG). The melting points (Tm) of crystallized MDI-BD units decreased with increasing TMP contents and increased with increasing PTMG contents, respectively. A decrease in molecular weight of PTMG and incorporation of PEG decreased Tm. These results indicate that incorporation of a third component would cause to form the well-ordered crystal being closed to equilibrium state.

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Crystallization behavior of hard segment in polyurethane elastomers

Abstract

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