Abstract
The purpose of this study is the improvement of thermal stability of the polyurethane elastmers (PUEs) by introduction of L-Ascorbic acid (L-As). The PUEs were prepared from poly(oxytetramethylene) glycol (PTMG: M̄n=2017), and 4,4'-diphenylmethane diisocyanate (MDI), ethylene glycol (EG) or mixture of L-As and EG (0:100 25:75 33:66 50:50 wt%) as a curing agent by a prepolymer method. Density, hardness, aggregation structure, molecular mobility and thermal stability were investigated by measuring FT-IR, 1H-pulsed NMR, thermal and dynamic viscoelastic properties. After thermal deterioration, density, hardness and dynamic storage modulus of rubbery plateau region of the PUEs decreased. With increasing L-As content, those magnitudes for the PUEs did not show large differences before and after thermal deterioration. These results clearly suggest that the L-As act as an oxidation inhibitor in the PUEs.
| Original language | English |
|---|---|
| Title of host publication | 54th SPSJ Annual Meeting 2005 - Polymer Preprints, Japan |
| Pages | 1273 |
| Number of pages | 1 |
| Volume | 54 |
| Edition | 1 |
| Publication status | Published - 2005 |
| Externally published | Yes |
| Event | 54th SPSJ Annual Meeting 2005 - Yokohama, Japan Duration: May 25 2005 → May 27 2005 |
Other
| Other | 54th SPSJ Annual Meeting 2005 |
|---|---|
| Country | Japan |
| City | Yokohama |
| Period | 5/25/05 → 5/27/05 |
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All Science Journal Classification (ASJC) codes
- Engineering(all)
Cite this
Synthesis and thermal stability of polyurethane using L-ascorbic acid. / Akutagawa, Takashi; Kojio, Ken; Furukawa, Mutsuhisa.
54th SPSJ Annual Meeting 2005 - Polymer Preprints, Japan. Vol. 54 1. ed. 2005. p. 1273.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Synthesis and thermal stability of polyurethane using L-ascorbic acid
AU - Akutagawa, Takashi
AU - Kojio, Ken
AU - Furukawa, Mutsuhisa
PY - 2005
Y1 - 2005
N2 - The purpose of this study is the improvement of thermal stability of the polyurethane elastmers (PUEs) by introduction of L-Ascorbic acid (L-As). The PUEs were prepared from poly(oxytetramethylene) glycol (PTMG: M̄n=2017), and 4,4'-diphenylmethane diisocyanate (MDI), ethylene glycol (EG) or mixture of L-As and EG (0:100 25:75 33:66 50:50 wt%) as a curing agent by a prepolymer method. Density, hardness, aggregation structure, molecular mobility and thermal stability were investigated by measuring FT-IR, 1H-pulsed NMR, thermal and dynamic viscoelastic properties. After thermal deterioration, density, hardness and dynamic storage modulus of rubbery plateau region of the PUEs decreased. With increasing L-As content, those magnitudes for the PUEs did not show large differences before and after thermal deterioration. These results clearly suggest that the L-As act as an oxidation inhibitor in the PUEs.
AB - The purpose of this study is the improvement of thermal stability of the polyurethane elastmers (PUEs) by introduction of L-Ascorbic acid (L-As). The PUEs were prepared from poly(oxytetramethylene) glycol (PTMG: M̄n=2017), and 4,4'-diphenylmethane diisocyanate (MDI), ethylene glycol (EG) or mixture of L-As and EG (0:100 25:75 33:66 50:50 wt%) as a curing agent by a prepolymer method. Density, hardness, aggregation structure, molecular mobility and thermal stability were investigated by measuring FT-IR, 1H-pulsed NMR, thermal and dynamic viscoelastic properties. After thermal deterioration, density, hardness and dynamic storage modulus of rubbery plateau region of the PUEs decreased. With increasing L-As content, those magnitudes for the PUEs did not show large differences before and after thermal deterioration. These results clearly suggest that the L-As act as an oxidation inhibitor in the PUEs.
UR - http://www.scopus.com/inward/record.url?scp=33645637214&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33645637214&partnerID=8YFLogxK
M3 - Conference contribution
VL - 54
SP - 1273
BT - 54th SPSJ Annual Meeting 2005 - Polymer Preprints, Japan
ER -