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Implant materials modified by colloids

Abstract

Recent advances in general medicine led to the development of biomaterials. Implant material should be characterized by a high biocompatibility to the tissue and appropriate functionality, i.e. to have high mechanical and electrical strength and be stable in an electrolyte environment – these are the most important properties of bioceramic materials. Considerations of biomaterials design embrace also electrical properties occurring on the implant-body fluid interface and consequently the electrokinetic potential, which can be altered by modifying the surface of the implant. In this work, the surface of the implants was modified to decrease the risk of infection by using metal colloids. Nanocolloids were obtained using different chemical and electrical methods. It was found that the colloids obtained by physical and electrical methods are more stable than colloids obtained by chemical route. In this work the surface of modified corundum implants was investigated. The implant modified by nanosilver, obtained by electrical method was selected. The in vivo research on animals was carried out. Clinical observations showed that the implants with modified surface could be applied to wounds caused by atherosclerotic skeleton, for curing the chronic and bacterial inflammations as well as for skeletal reconstruction surgery.

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Wrinkled graphene: synthesis and characterization of few layer graphene-like nanocarbons from kerosene

resulted in the formation of finite sized less defective few-layer GO. Fig. 4 Deconvoluted first order Raman spectrum of KS1. 3.4 FT-IR analysis The peak positions in the FT-IR spectrum of KS1 ( Fig. 5 ) clearly indicate the incorporation of hydroxyl (3414 cm -1 ), epoxy (1044 cm -1 , 1168 cm -1 and 850 cm -1 ), carboxyl and car-bonyl functional groups into the graphitic lattice of the KS, during oxidation. The peak observed at 1622 cm –1 is due to C=C skeletal vibrations from graphitic domains and the one at 1720 cm –1 is attributed to C

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