Národní úložiště šedé literatury Nalezeno 2 záznamů.  Hledání trvalo 0.01 vteřin. 
Dynamic tensiometry of biocolloids
Kulilová, Pavlína ; Mašek, David (oponent) ; Pekař, Miloslav (vedoucí práce)
Hyaluronic acid is currently one of the biomolecules with great interest which is widely used in medicine and cosmetics and its investigation is very important for future use. The aim of this work was to investigate the surface behavior, using dynamic tensiometry method, of different systems namely hyaluronic acid, its hydrophobic derivatives and SDS solutions for comparison. These compounds were investigated in water and in sodium counterions. The observed systems were measured in various concentration ranges under the laboratory temperature. It was performed two methods employing a BPA-800P Bubble Pressure Tensiometer which is completely new apparatus and new technique of tensiometry measuring. There were proposed some experiments for biocolloids research to find usable possibilities of this apparatus for next research works. Results of thesis show single surfactants differences depending on their concentration and used environment. Hyaluronic acid exhibits no surface activity in contrast to its derivatives and SDS.
Dynamic tensiometry of biocolloids
Kulilová, Pavlína ; Mašek, David (oponent) ; Pekař, Miloslav (vedoucí práce)
Hyaluronic acid is currently one of the biomolecules with great interest which is widely used in medicine and cosmetics and its investigation is very important for future use. The aim of this work was to investigate the surface behavior, using dynamic tensiometry method, of different systems namely hyaluronic acid, its hydrophobic derivatives and SDS solutions for comparison. These compounds were investigated in water and in sodium counterions. The observed systems were measured in various concentration ranges under the laboratory temperature. It was performed two methods employing a BPA-800P Bubble Pressure Tensiometer which is completely new apparatus and new technique of tensiometry measuring. There were proposed some experiments for biocolloids research to find usable possibilities of this apparatus for next research works. Results of thesis show single surfactants differences depending on their concentration and used environment. Hyaluronic acid exhibits no surface activity in contrast to its derivatives and SDS.

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