Improvement of the low-temperature property of aliphatic polycarbonate glycols-based polyurethane elastomers

Ken Kojio, Mutsuhisa Furukawa, Machiko Shimada, Makoto Shimada, Takuya Komatsu, Shuhei Nozaki, Suguru Motokucho, Kohji Yoshinaga

Research output: Contribution to journalArticle

3 Citations (Scopus)

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 languageEnglish
Pages (from-to)934-939
Number of pages6
JournalScience of Advanced Materials
Volume7
Issue number5
DOIs
Publication statusPublished - Jan 1 2015
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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  • Cite this

    Kojio, K., Furukawa, M., Shimada, M., Shimada, M., Komatsu, T., Nozaki, S., Motokucho, S., & Yoshinaga, K. (2015). Improvement of the low-temperature property of aliphatic polycarbonate glycols-based polyurethane elastomers. Science of Advanced Materials, 7(5), 934-939. https://doi.org/10.1166/sam.2015.1913