Sorpce barviva do nanovlákenné vrstvy
Title Alternative:Dye sorption by nanofibrous membrane
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Cílem této bakalářské práce, bylo zkoumání sorpčních vlastností vláken Polyamidu 6. Zkoumání probíhalo třemi různými způsoby a za různých podmínek pokusů (různé koncentrací barviva, barvení za třepání/bez třepání). Pro provedení kontinuálního pokusu během experimentální práce bylo sestaveno zařízení pro kontinuální sorpci. Jako sorbent ve všech pokusech byla použita nanovlákenná membrána z elektrostaticky zvlákněných vláken Polyamidu 6 s plošnou hustotou 1.26g/m2. Jako modelový kontaminant v této práci bylo použito kyselé barvivo Acid Blue 41. Byly zaznamenány průběhy změny koncentraci barviva v lázni během pokusu, bylo kvantifikováno množství absorbovaného barviva a analyzována kinetika sorpci barviva do vláken. Pro sledování morfologii povrchu vláken po sorpci byla provedena SEM analýza vzorků. Výsledky výzkumu ukázali, že sorpce barviva za podmínek kontinuálního pokusu je nejrychlejší, diskontinuální míchaný pokus vykazuje téměř stejné výsledky a to bez potřeby zajištění tlaku, složitějšího zařízení atd. Nemíchaný pokus vykazuje výrazně nejpomalejší průběh sorpci, a dokazuje, že míchání při diskontinuálním postupu je nezbytné.
The aim of this thesis was to investigate sorption properties of Polyamide 6 nanofibers. Investigation was provided within three different ways and under different conditions of experiment (different concentrations of dye, sorption with stirring and without stirring). For the continuous experiment the apparatus for continuous sorption was constructed. In all experiments electrospinning Polyamide 6 nanofibers with areal density 1.26g/m2 were used. As a model contaminant acid dye Acid Blue 41was used in this study. Changes in concentration of dye in the bath during experiment were detected, amount of absorbed dye was calculated and kinetic of dye sorption was analysed. In aim to research the surface and morphology of fibers after the sorption SEM analyze was performed. Results of the research showed, that dye sorption under terms of continuous experiment was the fastest, discontinuous experiment with stirring performed similar results without any need of providing pressure, more complicated equipment, etc. Discontinuous experiment without stirring performed significantly lower results and proves that stirring within discontinuous way of sorption is necessary.
The aim of this thesis was to investigate sorption properties of Polyamide 6 nanofibers. Investigation was provided within three different ways and under different conditions of experiment (different concentrations of dye, sorption with stirring and without stirring). For the continuous experiment the apparatus for continuous sorption was constructed. In all experiments electrospinning Polyamide 6 nanofibers with areal density 1.26g/m2 were used. As a model contaminant acid dye Acid Blue 41was used in this study. Changes in concentration of dye in the bath during experiment were detected, amount of absorbed dye was calculated and kinetic of dye sorption was analysed. In aim to research the surface and morphology of fibers after the sorption SEM analyze was performed. Results of the research showed, that dye sorption under terms of continuous experiment was the fastest, discontinuous experiment with stirring performed similar results without any need of providing pressure, more complicated equipment, etc. Discontinuous experiment without stirring performed significantly lower results and proves that stirring within discontinuous way of sorption is necessary.