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M. Auguścik, B. Waśniewski, M. Krzyżowska, W. Karalus, J. Dąbrowski, J. Ryszkowska

Effect of the content of rigid segments on the properties

of polycarbonate urethanes for use in intervertebral disc implants

Polimery 2015, No 9, 551


DOI: dx.doi.org/10.14314/polimery.2015.551

Summary
A series of polycarbonate urethanes (PUR) containing 30, 34 and 45 wt % hard segments was synthesized from oligocarbonate diol (OCD) and dicyclohexylmethane 4,4'-diisocyanate (HMDI). The structure and properties of the obtained polymers were characterized using infrared spectroscopy with Fourier transformation (FT-IR), differential scanning calorimetry (DSC), dynamic mechanical thermal analysis (DMA), thermogravimetric analysis (TGA) and scanning electron microscopy (SEM). The tensile strength properties, hardness, resilience and density of PUR were determined and abrasive wear resistance was evaluated in a tribological test. The surface properties were examined using contact angle measurements and free surface energy was calculated. The preliminary cytotoxicity tests were performed. The selected samples of the obtained materials were tested using the simulator of spine motion segment. The intervertebral disc implant produced from polycarbonate urethane with 34 wt % hard segments showed no signs of decay caused by abrasion wear and did not change its mechanical characteristics after 3 million cycles.
Keywords: polycarbonate urethane, synthesis, polyurethane characterization, intervertebral disc
e-mail: mauguscik@inmat.pw.edu.pl
M. Auguścik, B. Waśniewski, M. Krzyżowska, W. Karalus, J. Dąbrowski, J. Ryszkowska (1.2 MB)
Effect of the content of rigid segments on the properties of polycarbonate urethanes for use in intervertebral disc implants