The effect of hybrid coatings based on hydrogel, biopolymer and inorganic components on the corrosion behavior of titanium bone implants; Journal of Materials Chemistry B; Vol. 7, iss. 43

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Parent link:	Journal of Materials Chemistry B Vol. 7, iss. 43.— 2019.— [P. 6778-6788]
Ente Autore:	Национальный исследовательский Томский политехнический университет Инженерная школа ядерных технологий Научно-образовательный центр Б. П. Вейнберга
Altri autori:	Saveleva M. S. Mariia, Vladesku A. Alina, Kotrut M. K. Mikhay Kosmin, Van der M. L. Meeren Louis, Surmeneva M. A. Maria Alexandrovna, Surmenev R. A. Roman Anatolievich, Parakhonskiy B. V. Bogdan, Skirtach A. G. Andre
Riassunto:	Title screen Modification of titanium (Ti) bone implant materials with hybrid organic-inorganic coatings is a novel promising approach to improve the osteoconductivity and osteointegration of implants and prevent their failure after implantation. However, in these coatings, which are mostly hydrophilic, chemically active moieties capable of releasing oxidizing ions can have a significant influence on the corrosion resistance of Ti, which is critical for the Ti implant osteointegration behavior. In this research, in order to study the dependence of the change of the corrosion behavior of Ti on the composition of the coating, Ti surfaces were modified with various coatings: organic (alginate hydrogel crosslinked with Ca2+ ions (Alg), and dextran sulfate (DS)), inorganic (porous calcium carbonate CaCO3), and composite organic-inorganic (Alg-CaCO3, DS-CaCO3). The morphology and composition of these materials before and after the corrosion experiment, performed in simulated body fluid (SBF), were followed by extensive characterization. Electrochemical impedance spectroscopy (EIS) was performed to study the corrosion behavior of the prepared materials in SBF. The characteristics obtained during the EIS measurements revealed the dependence of the variation of the corrosion resistance level on the composition of the coating. The bare Ti surface had the higher value of the total impedance compared with the modified surfaces, while the Ti surfaces modified with organic coatings demonstrated the best charge transfer resistance in comparison with the coatings containing the inorganic CaCO3 component and uncoated Ti. Режим доступа: по договору с организацией-держателем ресурса
Lingua:	inglese
Pubblicazione:	2019
Soggetti:	электронный ресурс труды учёных ТПУ гибридные покрытия гидрогели биополимеры неорганические полимеры коррозионное поведение титановые имплантаты костные импланты
Accesso online:	https://doi.org/10.1039/C9TB01287G
Natura:	Elettronico Capitolo di libro
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=664069