Physicochemical characterization and degradation characteristics of segmented polyurethaneureas prepared from aliphatic diisocyanates

Michiko Hadano, Hideyuki Otsuka, Sono Sasaki, Keigo Aoi, Atsushi Takahara

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The two kinds of segmented polyurethaneureas (SPUU) were synthesized via standard two step prepolymer method using aliphatic diisocyanates, biodegradable polyester diol, poly (-ε-caprolactone diol). DSC, WAXD, dynamic viscoelastic measurements, and tensile test were carried out. DSC measurement revealed that the relative ratio of PCL and BDA segments in these SPUU changed the crystallinity of PCL segment. Furthermore, the LDI based SPUU with 71% PCL segment (PCL(1250)(71)LDI-BDA) and BDI based SPUU with 77% PCL segment (PCL(1250)(77)BDI-BDA) showed good elastic properties. This behavior can be originated from the partial phase mixing of LDI and PCL for PCL(1250)(71)LDI-BDA and the formation of crystalline hard segment for PCL(1250)(77)BDI-BDA. Finally, degradability of LDI and BDI-based SPUU were evaluated by the change in weight with time exposing the polymers to tris buffered saline solution at 310 K (pH=7.6). The weight loss of both SPUU was about 10% after 70 days.

Original languageEnglish
Title of host publication55th SPSJ Symposium on Macromolecules
Pages3357-3358
Number of pages2
Volume55
Edition2
Publication statusPublished - 2006
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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    Hadano, M., Otsuka, H., Sasaki, S., Aoi, K., & Takahara, A. (2006). Physicochemical characterization and degradation characteristics of segmented polyurethaneureas prepared from aliphatic diisocyanates. In 55th SPSJ Symposium on Macromolecules (2 ed., Vol. 55, pp. 3357-3358)