Abstract
Structure-property relationship of polyurethane elastomers (PUEs) based on aliphatic carbonate glycols (PCglycols) with various molecular weights (HO-[(CH2)mOC(=O)O]n-(CH2)m-OH, m = 3 and 6, Mn = 1000-3000) were investigated to improve their low-temperature property. Differential scanning calorimetry (DSC) measurement revealed that the glass transition temperature (Tg) of the soft segment in the PUEs decreased ca. 10-25 oC and crystallized hard segment exhibited larger heat of fusion with increasing molecular weight of the PC-glycol. This trend clearly implies that the degree of microphase separation of the PUEs became stronger with an increase in molecular weight of the PC-glycol. In the tensile testing, Young's modulus and tensile strength increased with increase in the degree of microphase separation. In other words, an increase in molecular weight of the PC-glycol gives the PUEs bearing lower Tg and superior mechanical properties.
| Original language | English |
|---|---|
| Pages (from-to) | 934-939 |
| Number of pages | 6 |
| Journal | Science of Advanced Materials |
| Volume | 7 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - Jan 1 2015 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Materials Science(all)
Cite this
Improvement of the low-temperature property of aliphatic polycarbonate glycols-based polyurethane elastomers. / Kojio, Ken; Furukawa, Mutsuhisa; Shimada, Machiko; Shimada, Makoto; Komatsu, Takuya; Nozaki, Shuhei; Motokucho, Suguru; Yoshinaga, Kohji.
In: Science of Advanced Materials, Vol. 7, No. 5, 01.01.2015, p. 934-939.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Improvement of the low-temperature property of aliphatic polycarbonate glycols-based polyurethane elastomers
AU - Kojio, Ken
AU - Furukawa, Mutsuhisa
AU - Shimada, Machiko
AU - Shimada, Makoto
AU - Komatsu, Takuya
AU - Nozaki, Shuhei
AU - Motokucho, Suguru
AU - Yoshinaga, Kohji
PY - 2015/1/1
Y1 - 2015/1/1
N2 - Structure-property relationship of polyurethane elastomers (PUEs) based on aliphatic carbonate glycols (PCglycols) with various molecular weights (HO-[(CH2)mOC(=O)O]n-(CH2)m-OH, m = 3 and 6, Mn = 1000-3000) were investigated to improve their low-temperature property. Differential scanning calorimetry (DSC) measurement revealed that the glass transition temperature (Tg) of the soft segment in the PUEs decreased ca. 10-25 oC and crystallized hard segment exhibited larger heat of fusion with increasing molecular weight of the PC-glycol. This trend clearly implies that the degree of microphase separation of the PUEs became stronger with an increase in molecular weight of the PC-glycol. In the tensile testing, Young's modulus and tensile strength increased with increase in the degree of microphase separation. In other words, an increase in molecular weight of the PC-glycol gives the PUEs bearing lower Tg and superior mechanical properties.
AB - Structure-property relationship of polyurethane elastomers (PUEs) based on aliphatic carbonate glycols (PCglycols) with various molecular weights (HO-[(CH2)mOC(=O)O]n-(CH2)m-OH, m = 3 and 6, Mn = 1000-3000) were investigated to improve their low-temperature property. Differential scanning calorimetry (DSC) measurement revealed that the glass transition temperature (Tg) of the soft segment in the PUEs decreased ca. 10-25 oC and crystallized hard segment exhibited larger heat of fusion with increasing molecular weight of the PC-glycol. This trend clearly implies that the degree of microphase separation of the PUEs became stronger with an increase in molecular weight of the PC-glycol. In the tensile testing, Young's modulus and tensile strength increased with increase in the degree of microphase separation. In other words, an increase in molecular weight of the PC-glycol gives the PUEs bearing lower Tg and superior mechanical properties.
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UR - http://www.scopus.com/inward/citedby.url?scp=84922136038&partnerID=8YFLogxK
U2 - 10.1166/sam.2015.1913
DO - 10.1166/sam.2015.1913
M3 - Article
AN - SCOPUS:84922136038
VL - 7
SP - 934
EP - 939
JO - Science of Advanced Materials
JF - Science of Advanced Materials
SN - 1947-2935
IS - 5
ER -