Organic/inorganic bioactive materials part IV: In vitro assessment of bioactivity of gelatin-calcium phosphate silicate/wollastonite hybrids

• Autorzy: Lachezar Radev , Vladimir Hristov , Maria Fernandes , Isabel Salvado
• Języki publikacji: EN

Abstrakty

EN

Biohybrids consisting of gelatin (G) and calcium phosphate silicate/wollastonite (CPS/W) have not been prepared so far. In this work our results are focused on the possibility of obtaining G-CPS/W bioactive hybrids in vitro. XRD, FTIR, SEM/EDS techniques were employed to characterize the synthesized hybrid materials. FTIR shows that before immersion in 1.5 SBF the “red shift” of COO- band for pure G is observed. The presence of this bond could be attributed to the formation of COO-Ca2+ via non-biomimetic route. After immersion in 1.5 SBF, FTIR shows the presence of A- and B-type carbonate containing hydroxyapatite (A/B-CO3HA). ESD and FTIR show that small amount of calcite (CaCO3) are present after in vitro test in 1.5 SBF for 3 days. XRD reveals that CO3HA and small amounts of CaCO3 can be detected after in vitro test. SEM results obtained for immersed samples show that hydroxyapatite (HA) particles fully covered the surface of the hybrids by a layer composed of spherulites. At higher magnification, very small elongated crystallites could be observed. [...]

Słowa kluczowe

EN

Gelatin; Calcium phosphate silicate/wollastonite; In vitro bioactivity

• Czasopismo: Open Chemistry
• Rocznik: 2010
• Tom: 8
• Numer: 2
• Strony: 278-284

Daty

wydano

2010-04-01

online

2010-03-23

Twórcy

autor

Lachezar Radev

• Department of Chemical Technology, University of Chemical Technology and Metallurgy, 1756, Sofia, Bulgaria,

autor

Vladimir Hristov

• Department of Chemical Technology, University of Chemical Technology and Metallurgy, 1756, Sofia, Bulgaria

autor

Maria Fernandes

• Department of Ceramic and Glass Engineering and CICECO, University of Aveiro, 3810-193, Aveiro, Portugal

autor

Isabel Salvado

• Department of Ceramic and Glass Engineering and CICECO, University of Aveiro, 3810-193, Aveiro, Portugal

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Identyfikatory

DOI

10.2478/s11532-009-0142-8