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Wyszukujesz frazę "titanium phosphate" wg kryterium: Temat

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    Wyświetlanie 1-5 z 5
    Tytuł:
    The effect of hydrothermal modification of titanium phosphate on the adsorption affinity towards cadmium ions
    Autorzy:
    Janusz, Władysław
    Khalameida, Svietlana
    Skwarek, Ewa
    Sydorchuk, Vladimir
    Charmas, Barbara
    Powiązania:
    https://bibliotekanauki.pl/articles/110216.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    titanium phosphate
    FTIR-ATR
    hydrothermal treatment
    adsorption
    cadmium ions
    Opis:
    The effect of hydrothermal treatment of the gel or xerogel oftitanium phosphate (TiP) sample on the surface properties was studied usingthe EDS and FTIR ATR methods. The results show that the hydrothermal treatment of initial titanium phosphate decreases the amount of physically adsorbed water but increases the surface concentration of phosphate groups. Supplementary measurements of electrokinetic properties of modified and hydrothermally modified titanium phosphate samples confirmed an increase of the concentration of acidic groups on theTiP surface. The adsorption affinity of titanium phosphate towards cadmium ions was discussed. It was found that at a low initial concentration of cadmium ions adsorption affinity increases as a resultof hydrothermal treatment of TiP gel.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2019, 55, 6; 1568-1576
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Integration of trace elements into calcium phosphate coatings on titanium and their characterization in vitro
    Autorzy:
    Wolf-Brandstetter, C.
    Urbanek, S.
    Beutner, R.
    Scharnweber, D.
    Moseke, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/284770.pdf
    Data publikacji:
    2017
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
    Tematy:
    calcium phosphate
    titanium alloys
    biomaterials
    Źródło:
    Engineering of Biomaterials; 2017, 20, no. 143 spec. iss.; 79
    1429-7248
    Pojawia się w:
    Engineering of Biomaterials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effect of titanium dioxide addition on physical and biological properties of Na2O-B2O3-P2O5 and CaO-Na2O-P2O5 glasses
    Autorzy:
    Kalwasińska, O.
    Gajc, M.
    Kłos, A.
    Orliński, K.
    Pawlak, D. A.
    Krok-Borkowicz, M.
    Rumian, Ł.
    Pietryga, K.
    Reczyńska, K.
    Pamuła, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/285502.pdf
    Data publikacji:
    2016
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
    Tematy:
    phosphate glasses
    bioactive glasses
    titanium dioxide
    tissue engineering
    Opis:
    Two types of phosphate glasses 50Na2O-20B2O3-30P2O5 (NBP) and 30CaO-20Na2O-50P2O5 (CNP) with different content of TiO2 (0, 3 and 5 mol%) have been prepared by melt-quenching process. TiO2 was added to increase glass network stability. Physical properties of glasses were investigated by density measurements, differential scanning calorimetry and degradation in phosphate buffered saline (PBS). Biological performance of glasses in a direct contact with osteoblast-like MG-63 cells was analysed with the use of resazurin test and live-dead staining. The results show that TiO2 addition increased density, glass transition temperature (Tg) and melting temperature (Tm) of both types of glasses. In the case of NBP glasses presence of TiO2 resulted in their fast degradation in PBS and acidification of cell culture medium. As a consequence such glasses did not support cell adhesion and growth, but they can be considered for e.g. drug delivery systems. On the other hand addition of TiO2 to CNP glasses resulted in enhanced cell adhesion and viability. Particularly positive results were found for CNP glass containing 5% TiO2, so it can be a good candidate as a scaffold material for bone tissue engineering.
    Źródło:
    Engineering of Biomaterials; 2016, 19, 134; 2-7
    1429-7248
    Pojawia się w:
    Engineering of Biomaterials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Deposition of phosphate coatings on titanium within scaffold structure
    Autorzy:
    Trybuś, B.
    Zieliński, A.
    Beutner, R.
    Seramak, T.
    Scharnweber, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/306537.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    powłoka fosforanowa
    osadzanie elektrochemiczne
    stal szlachetna
    topnienie
    phosphate coatings
    electrochemical deposition
    stainless steel
    selective laser
    melting
    titanium
    Opis:
    Purpose. Existing knowledge about the appearance, thickness, and chemical composition of 37 phosphate coatings on titanium inside porous structures is insufficient. Such knowledge is 38 important for the design and fabrication of porous implants. 39 Methods. Metallic scaffolds were fabricated by selective laser melting of 316L stainless steel 40 powder. Phosphate coatings were deposited on Ti sensors placed either outside the scaffolds 41 or in the holes in the scaffolds. The electrochemically-assisted cathodic deposition of 42 phosphate coatings was performed under galvanostatic conditions in an electrolyte containing 43 the calcium and phosphate ions. The phosphate deposits were microscopically investigated; 44 this included the performance of mass weight measurements and chemical analyses of the content of Ca2+ and PO4 2‒ 45 ions after the dissolution of deposits. 46 Results. The thicknesses of the calcium phosphate coatings were about 140 and 200 nm for 47 isolated titanium sensors and 170 and 300 nm for titanium sensors placed inside pores. 48 Deposition of calcium phosphate occurred inside the pores up to 150 mm below the scaffold 49 surface. The deposits were rich in Ca, with a Ca/P ratio ranging between 2 and 2.5. 50 Conclusions. Calcium phosphate coatings can be successfully deposited on a Ti surface 51 inside a model scaffold. An increase in cathodic current results in an increase in coating 52 thickness. Any decrease in the cathodic current inside the porous structure is slight. The 53 calcium phosphate inside the pores has a much higher Ca/P ratio than that of stoichiometric 54 HAp, likely due to a gradual increase in Ca fraction with distance from the surface.
    Źródło:
    Acta of Bioengineering and Biomechanics; 2017, 19, 2; 65-72
    1509-409X
    2450-6303
    Pojawia się w:
    Acta of Bioengineering and Biomechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of the adhesion properties of calcium-phosphate coating to titanium substrate with regards to the parameters of high-frequency magnetron sputtering
    Autorzy:
    Kenzhegulov, Aidar K.
    Mamaeva, Axaule A.
    Panichkin, Alexander V.
    Prosolov, Konstantin A.
    Brończyk, Anna
    Capanidis, Dymitry
    Powiązania:
    https://bibliotekanauki.pl/articles/27324145.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    calcium phosphate coating
    high-frequency magnetron sputtering
    indenter
    acoustic emission
    friction coefficient
    titanium
    substrate
    powłoka z fosforanu wapnia
    rozpylanie magnetronowe o wysokiej częstotliwości
    wgłębnik
    emisja akustyczna
    współczynnik tarcia
    tytan
    podłoże
    Opis:
    The main goal of the work was to find the interconnection between the high-frequency magnetron sputtering parameters and the adhesion properties of CaP coatings formed on the surface of titanium substrate. Methods: Calcium-phosphate coatings, similar in composition to hydroxyapatite, were generated by high-frequency magnetron sputtering on titanium substrate at different values of high-frequency specific power over times of one and two hours. Afterwards, the generated coatings were studied using the method of X-ray phase analysis, and sclerometric tests (scratch test) were carried out. The adhesion strength of the deposited coatings was tested for different coating thicknesses from 0.45 to 1.1 x 10–3 mm. Results: According to the results of sclerometry, it was found that with an increase in the high-frequency specific power of plasma to 3.15 W/cm2 , the adhesion strength of the calcium-phosphate coating also increases. For all the coatings, the critical loads at which the coating completely exfoliated from the substrate were determined. Conclusions: According to the research results, the most optimal conditions for obtaining high-adhesive calcium-phosphate coatings were determined.
    Źródło:
    Acta of Bioengineering and Biomechanics; 2020, 22, 2; 111--120
    1509-409X
    2450-6303
    Pojawia się w:
    Acta of Bioengineering and Biomechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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