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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Interactions of polycations and anionic surfactants
 Szabová, Jana ; Krouská, Jitka (referee) ; Mravec, Filip (advisor)
This thesis deals with the study of interaction polycations and anionic sufactants with regard to phase separation in water and in physiological saline solution (0.15 moldm3 NaCl). First, the solubilizing experiments were made (using hydrophobic dye red oil O) for mapping behavior system SDS-DEAE. Then the aggregation behavior of surfactant was measured. Using solubilizing experiments the area for influence of addition dextran hydrochloride for aggregation was selected. This behavior was investigated by fluorescence spectroscopy using pyrene as fluorescence probe. The Critical Micellar and Agregation Concentration of studied system was determined and defined the area of phase separation. The influence of the process of preparing hydrogels by dry or wet path was studeid. The measurements revealed that the addition of salt and polymer has a considerable influence on value of CAC. It was also found, that increasing ionic strength affects the formation of a hydrogel. Finally, it was found that the process of preparing hydrogels does not affect formation of hydrogel.
Detailed record
Interactions of polycations and anionic surfactants
 Szabová, Jana ; Krouská, Jitka (referee) ; Mravec, Filip (advisor)
This thesis deals with the study of interaction polycations and anionic sufactants with regard to phase separation in water and in physiological saline solution (0.15 moldm3 NaCl). First, the solubilizing experiments were made (using hydrophobic dye red oil O) for mapping behavior system SDS-DEAE. Then the aggregation behavior of surfactant was measured. Using solubilizing experiments the area for influence of addition dextran hydrochloride for aggregation was selected. This behavior was investigated by fluorescence spectroscopy using pyrene as fluorescence probe. The Critical Micellar and Agregation Concentration of studied system was determined and defined the area of phase separation. The influence of the process of preparing hydrogels by dry or wet path was studeid. The measurements revealed that the addition of salt and polymer has a considerable influence on value of CAC. It was also found, that increasing ionic strength affects the formation of a hydrogel. Finally, it was found that the process of preparing hydrogels does not affect formation of hydrogel.
Detailed record

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