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Growth of muscle cells on plasma-treated and gold nanoparticles-grafted polytetrafluoroethylene

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Abstract

Polytetrafluoroethylene (PTFE) was modified by Ar plasma with different exposure times. The plasma-activated surface was immersed in biphenyldithiol and subsequently in colloidal solution of Au nanoparticles. The changes in the surface wettability contact angle were examined by goniometry. Atomic force microscopy was used to determine the surface roughness and morphology. Changes in the chemical structure of the modified PTFE were studied using X-ray photoelectron spectroscopy (XPS) and electrokinetic analysis. The interaction of plasma-treated and grafted samples with vascular smooth muscle cell derived from the rat aorta was also studied. Specifically, the number and morphology of the adhered and proliferated cells on the PTFE were studied under in vitro conditions. The plasma treatment and the subsequent biphenyldithiol and Au nanoparticles grafting led to changes in the polymer surface chemistry, morphology, roughness and wettability. The polymer grafting with biphenyl-4,4′-dithiol (BFD) and subsequently with Au nanoparticles led to a decrease in the surface polarity. XPS measurements proved the presence of S and Au on the PTFE surface. Grafting with BFD and Au nanoparticles led to the decrease in surface roughness. In comparison with the pristine polymer, the plasma treatment and Au nanoparticles grafting increased the adhesion and proliferation of vascular smooth muscle cell.

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Acknowledgments

This work was supported by the GACR under project 108/12/G108.

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We declare that there is no conflict of interest.

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Correspondence to A. Řezníčková.

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Řezníčková, A., Makajová, Z., Slepičková Kasálková, N. et al. Growth of muscle cells on plasma-treated and gold nanoparticles-grafted polytetrafluoroethylene. Iran Polym J 23, 227–236 (2014). https://doi.org/10.1007/s13726-013-0218-3

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  • DOI: https://doi.org/10.1007/s13726-013-0218-3

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