Journal of Materials Science: Materials in Medicine

, Volume 24, Issue 2, pp 281–294

Catalyst-free synthesis of high elongation degradable polyurethanes containing varying ratios of isosorbide and polycaprolactone: physical properties and biocompatibility


DOI: 10.1007/s10856-012-4814-0

Cite this article as:
Park, H., Gong, M. & Knowles, J.C. J Mater Sci: Mater Med (2013) 24: 281. doi:10.1007/s10856-012-4814-0


Biocompatible and biodegradable polyurethanes were prepared with fixed aliphatic diisocyanate level and varying ratios of isosorbide, and PCL diol via a simple one-shot polymerization without a catalyst. The successful synthesis of the polyurethanes was confirmed by gel permeation chromatography, 1H-nuclear magnetic resonance and Fourier transform-infrared spectroscopies and the thermal properties were determined by differential scanning calorimetry and showed glass transition temperatures of around 30–35 °C. The degradation tests were performed at 37 °C in phosphate buffer solution (approx. pH 7.3) and showed a mass loss of around 5 % after 12 weeks, except for the polymer with the highest isosorbide content which showed an initial rapid mass loss. The in vitro cytocompatibility test results following culture of osteoblasts on the polymer surface showed that relative cell number on all of the polyurethane films after 5 days of cultured on polymer films was lower compared to the proliferation rate on the optimized tissue culture plastic. These polymers offer significant promise due to the simplicity of the synthesis and the controlled degradation.

Copyright information

© Springer Science+Business Media New York 2012

Authors and Affiliations

  1. 1.Department of Nanobiomedical Science and WCU Research CenterDankook University Graduate SchoolChungnamSouth Korea
  2. 2.Division of Biomaterials and Tissue EngineeringUCL Eastman Dental InstituteLondonUK