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Effect of soft-segment chemistry on polyurethane biocompatibility

V. MELNIG1,* , A. GARLEA1, L. OBREJA1

Affiliation

  1. Faculty of Physics, “Al. I. Cuza” University, Bd. Carol I, Nr. 11A, Iasi, 700506, Romania

Abstract

Biodegradable synthetic polymers are widely used as biomaterials because their mechanical and physical properties that can readily be adjusted by varying the preparation techniques and controlling the primary, secondary and supra-molecular structure. In this paper, the effect of lactate soft-segment chemistry on biomimetic properties of polyurethane elastomer was studied by combining steady-state infrared spectroscopy and UV-ellypsometry scattering techniques, monitoring the orientation of different functional groups with a diaphragm type film specimen under static loading conditions - static linear dichroism (SLD). The SLD data were explained by hydrogen bonds rearranging process and competition orientations of different secondary structures segments during structural changes induced by stretching. The shape of secondary structure of studied polyurethanes depends on urethane group concentration and soft segment structure..

Keywords

Polyurethanes, Films, Steady-state linear dichroism, Stretching-secondary, Structure monitoring.

Submitted at: Oct. 5, 2005
Accepted at: May 18, 2006

Citation

V. MELNIG, A. GARLEA, L. OBREJA, Effect of soft-segment chemistry on polyurethane biocompatibility, Journal of Optoelectronics and Advanced Materials Vol. 8, Iss. 3, pp. 1302-1307 (2006)