Biodegradation behavior of segmented polyurethanes prepared from amino acid-based diisocyanate

Atsushi Takahara, Michiko Hadano, Tomohiro Yamaguchi, Hideyuki Otsuka, Satoru Kidoaki, Takehisa Matsuda, Keigo Aoi, Sono Sasaki

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

Abstract

Segmented poly(urethaneurea)s (SPUUs) were synthesized from lysine-based diisocyanate (LDI), polycaprolactone diol (PCL) and 1,4-butanediamine (BDA). The hard segment fraction was changed in order to control the mechanical properties and the degradability. The physicochemical and structural characterizations of SPUUs were carried out by infrared spectroscopy and differential scanning calorimetry (DSC), temperature dependence of dynamic viscoelasticity and small-angle X-ray scattering (SAXS). DSC showed that the glass transition temperature (Tg) of BDA-based hard segment is located at ca.373K. DSC and dynamic viscoelastic measurements revealed that Tg of soft segment increased with an increase in hard segment fraction. SAXS of SPUUs revealed the molecular 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 suggested the biodegrability of SPUUs. Finally, an electrospray deposition method was used to fabricate biodegradable SPUU nanofibers.

Original languageEnglish
Title of host publication"New Century, New Materials and New Life" - Proceedings of 2005 International Conference on Advanced Fibers and Polymer Materials, ICAFPM 2005
PublisherChina Press
Pages897-901
Number of pages5
ISBN (Print)7502577173, 9787502577179
Publication statusPublished - Jan 1 2005
Event2005 International Conference on Advanced Fibers and Polymer Materials, ICAFPM 2005 - Shanghai, China
Duration: Oct 19 2005Oct 21 2005

Publication series

Name"New Century, New Materials and New Life" - Proceedings of 2005 International Conference on Advanced Fibers and Polymer Materials, ICAFPM 2005
Volume2

Other

Other2005 International Conference on Advanced Fibers and Polymer Materials, ICAFPM 2005
CountryChina
CityShanghai
Period10/19/0510/21/05

All Science Journal Classification (ASJC) codes

  • Biomaterials
  • Polymers and Plastics

Fingerprint Dive into the research topics of 'Biodegradation behavior of segmented polyurethanes prepared from amino acid-based diisocyanate'. Together they form a unique fingerprint.

Cite this