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Journal of Biomaterials Applications
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Synthesis, Physical Properties and Preliminary Investigation of Hemocompatibility of Polyurethanes from Aliphatic Resources with Castor Oil Participation

A. Szelest-Lewandowska

Department of Polymer Technology, Gdansk University of Technology, ul. G. Narutowicza 11/12, 80-952 Gdansk, Polandszelew{at}chem.pg.gda.pl

B. Masiulanis

Department of Polymer Technology, Gdansk University of Technology, ul. G. Narutowicza 11/12, 80-952 Gdansk, Poland

A. Klocke

B. Glasmacher

Helmholtz-Institute for Biomedical Engineering, Aachen University of Technology, Pauwelsstr. 20, D-52074 Aachen, Germany

The synthesis of polyurethanes (PURs) from oligoetherdiol, two low molecular diols, castor oil and 4,4'-Methylenebis(cyclohexylisocyanate) is described. These polymers are characterized by measurements of the mechanical bulk and surface properties, preliminary investigation of compatibility with human blood and calcification in static conditions.

The critical surface energy of synthesized PURs is similar to the critical surface energy of natural surfaces. Material-induced hemolysis and the changes of platelet counts in blood samples after contact with PURs are very low. Static seven-weeks-calcification testing in a synthetic calcification fluid did not indicate calcification by optical density measurements and by visual inspection and computer image processing of the X-ray films for PURs with and without castor oil.

Key Words: polyurethanes • castor oil • cycloaliphatic diisocyanate • bulk and surface properties • surface energy • hemocompatibility • calcification

Journal of Biomaterials Applications, Vol. 17, No. 3, 221-236 (2003)
DOI: 10.1177/0885328203017003480
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