Evaluation of molecular aggregation structure and degradation behavior of biodegradable segmented polyurethanes prepared from lysine based diisocyanate

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

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

Abstract

Segmented polyurethanes (SPU) and poly(urethane-urea)s (SPUU) were synthesized from lysine based diisocyanate (LDI), polycaprolactone diol (PCL), and 1,3-propanediol (PDO) or 1,4-butanediamine (BDA). DSC thermogram of SPU and SPUU showed that the glass transition temperature (Tg) of BDA-based hard segment is higher than that of PDO-based one. WAXD and SAXS of SPU and SPUU revealed the aggregation states of hard and soft segments. Furthermore, the degradation behavior was investigated by exposing the polymers to a buffer solution at 310 K (pH=7.6) and activated sludge. The higher degradation rate in activated sludge compared with that in a buffer solution means the biodegradation of these SPU and SPUU.

Original languageEnglish
Title of host publication54th SPSJ Annual Meeting 2005 - Polymer Preprints, Japan
Pages2000
Number of pages1
Volume54
Edition1
Publication statusPublished - 2005
Event54th SPSJ Annual Meeting 2005 - Yokohama, Japan
Duration: May 25 2005May 27 2005

Other

Other54th SPSJ Annual Meeting 2005
CountryJapan
CityYokohama
Period5/25/055/27/05

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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    Hadano, M., Yamaguchi, T., Otsuka, H., Aoi, K., Sasaki, S., & Takahara, A. (2005). Evaluation of molecular aggregation structure and degradation behavior of biodegradable segmented polyurethanes prepared from lysine based diisocyanate. In 54th SPSJ Annual Meeting 2005 - Polymer Preprints, Japan (1 ed., Vol. 54, pp. 2000)