Biodegradable polyurethane/soy protein shape-memory polymer blends prepared via environmentally-friendly aqueous dispersions

Samy Madbouly, Wenshou Wang, Joshua U. Otaigbe

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

Abstract

Biodegradable and biocompatible shape-memory polymer blends of soy protein (SP) and polyurethane (PU) based on poly(e-caprolactone) (PCL) has been synthesized using environmentally-friendly aqueous dispersion technique. High-pressure supercritical carbon dioxide (scC02) foaming technique was applied to the blends to generate three-dimensional interconnected porous structures or scaffolds with special enhanced benefits for potential biomedical applications such as soft tissue engineering and/or drug release. Blending PU dispersion (PUD) with SP significantly increased the biocompatibility and biodegradability properties of the materials and improved their shape-memory capability. The PCL soft segment was found to be miscible with SP over the entire range of concentration as confirmed by DSC measurements, where a single Tg located between the Tg of the pure SP and PCL soft segment was observed for all blend concentrations. The shape-memory behavior of the blends was investigated for different concentrations under free-stress condition. The rate of strain recovery was found to be SP concentration dependent. The stress recovery of the blend reached a maximum value at wSP = 0.1 weight fraction. This finding was attributed to the maximum increase in the degree of crystallinity of PCL soft segment at wSP = 0.1 as conformed by X-ray analysis.

Original languageEnglish (US)
Title of host publication68th Annual Technical Conference of the Society of Plastics Engineers 2010, ANTEC 2010
Pages88-93
Number of pages6
Publication statusPublished - Sep 22 2010
Event68th Annual Technical Conference of the Society of Plastics Engineers 2010, ANTEC 2010 - Orlando, FL, United States
Duration: May 16 2010May 20 2010

Publication series

NameAnnual Technical Conference - ANTEC, Conference Proceedings
Volume1

Other

Other68th Annual Technical Conference of the Society of Plastics Engineers 2010, ANTEC 2010
CountryUnited States
CityOrlando, FL
Period5/16/105/20/10

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Polymers and Plastics

Cite this

Madbouly, S., Wang, W., & Otaigbe, J. U. (2010). Biodegradable polyurethane/soy protein shape-memory polymer blends prepared via environmentally-friendly aqueous dispersions. In 68th Annual Technical Conference of the Society of Plastics Engineers 2010, ANTEC 2010 (pp. 88-93). (Annual Technical Conference - ANTEC, Conference Proceedings; Vol. 1).