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Národní úložiště šedé literatury Nalezeno 2 záznamů.  Hledání trvalo 0.00 vteřin. 
Structure and Properties of Collagen/HAP Nanocomposite Networks
 Kopuletá, Ema ; Lehocký,, Marián (oponent) ; Amler,, Evžen (oponent) ; Jančář, Josef (vedoucí práce)
Polymer-based materials are some of the most promising materials for tissue engineering and controlled drug delivery. Collagen, as one of the most abundant proteins to be found in mammals, is especially interesting due to its tunable properties and excellent host reactions. This thesis is focused on the self-assembly and the mechanical properties of collagen in solution, its kinetics and general principles controlling the process. The effect of hydroxyapatite nanoparticles on the collagen self-assembly and mechanical properties is also investigated. Possible mechanisms of collagen/hydroxyapatite interactions are elucidated along with the description of structure evolution and properties at various structural levels. The shear rate dependences and viscoelastic behavior of collagen I and its nanocomposites with hydroxyapatite (HAP) were measured and interpreted molecularly. The structure of collagen I scaffolds was studied and the effect of HAP and cross-linking was determined. Finally, the results were discussed in terms of the applicability of collagen/hydroxyapatite nanocomposites in scaffolds for bone tissue regeneration.
Úplný záznam
Structure and Properties of Collagen/HAP Nanocomposite Networks
 Kopuletá, Ema ; Lehocký,, Marián (oponent) ; Amler,, Evžen (oponent) ; Jančář, Josef (vedoucí práce)
Polymer-based materials are some of the most promising materials for tissue engineering and controlled drug delivery. Collagen, as one of the most abundant proteins to be found in mammals, is especially interesting due to its tunable properties and excellent host reactions. This thesis is focused on the self-assembly and the mechanical properties of collagen in solution, its kinetics and general principles controlling the process. The effect of hydroxyapatite nanoparticles on the collagen self-assembly and mechanical properties is also investigated. Possible mechanisms of collagen/hydroxyapatite interactions are elucidated along with the description of structure evolution and properties at various structural levels. The shear rate dependences and viscoelastic behavior of collagen I and its nanocomposites with hydroxyapatite (HAP) were measured and interpreted molecularly. The structure of collagen I scaffolds was studied and the effect of HAP and cross-linking was determined. Finally, the results were discussed in terms of the applicability of collagen/hydroxyapatite nanocomposites in scaffolds for bone tissue regeneration.
Úplný záznam

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