Aggregation structure and mechanical properties of polycarbonbate (PC) glycols and polyurethanes incorporating PC glycols

Ken Kojio, Machiko Sakai, Suguru Motokucho, Mutsuhisa Furukawa

Research output: Contribution to conferencePaper

Abstract

Polycarbonate-based polyurethane elastomers (PUEs) were prepared from poly(carbonate) (PC) glycol baring the number of methylene unit of 3-10. Aggregation structure and mechanical properties of these PUEs were investigated by differential scanning calorimetry (DSC), wide angle X-ray diffraction (WAXD) and dynamic viscoelatic measurement. The difference in the glass transition temperature of polyols (ΔTg,polyols) and Tg,PUEs (ΔTg) increased with increasing methylene chain length, indicating the degree of microphase separation became weaker with increasing methylene chain length. Magnitude of dynamic storage modulus (E') around rubbery plateau region in the E' curve decreased with increasing methylene chain length due to the change in microphase-separated state and flexibility of the PC glycols.

Original languageEnglish
Pages3379-3380
Number of pages2
Publication statusPublished - Dec 1 2006
Externally publishedYes
Event55th Society of Polymer Science Japan Symposium on Macromolecules - Toyama, Japan
Duration: Sep 20 2006Sep 22 2006

Other

Other55th Society of Polymer Science Japan Symposium on Macromolecules
CountryJapan
CityToyama
Period9/20/069/22/06

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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  • Cite this

    Kojio, K., Sakai, M., Motokucho, S., & Furukawa, M. (2006). Aggregation structure and mechanical properties of polycarbonbate (PC) glycols and polyurethanes incorporating PC glycols. 3379-3380. Paper presented at 55th Society of Polymer Science Japan Symposium on Macromolecules, Toyama, Japan.