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Title: Studies on the spacer effect on the surface fluorescence and performance properties of synthesized bis sulfo succinate gemini surfactants
Researcher: Singh, Vinayika
Guide(s): Tyagi,Rashmi
Keywords: Bis-Sulfo Succinate
Gemini Surfactants
University: Jaypee University of Engineering and Technology, Guna
Completed Date: 20/05/2017
Abstract: A series of bis-sulfosuccinate anionic gemini surfactants have been synthesized characterized and evaluated for their surface fluorescence and performance properties The chemical structures of the prepared gemini surfactants were confirmed by spectroscopic analytical techniques viz elemental analysis Fourier transform infrared spectroscopy FT IR and nuclear magnetic resonance spectroscopy newlineInvestigations were carried out to examine the effect of different spacer length on surface and fluorescence properties of prepared gemini surfactants The present study was also performed to investigate surface properties viz surface tension at CMC critical micelle concentration efficiency of adsorption of surfactant pC20 and surface pressure at the CMC of all prepared gemini surfactants On the basis of surface studies the significance of elongated flexible spacer group was established as indicated by low CMC value and larger pC20 Consequently higher surface activity was observed for all those gemini surfactants having longer spacer length CH2 The fluorescence studies revealed that all those gemini surfactants having a larger hydrophobic flexible spacer CH2 were more readily able to form micelles which leads to a lower CMC value, larger aggregation number and more closely packed micelle structures The results also indicated that high aggregation number and low pyrene intensity ratio could be achieved when concentration of gemini surfactants increased newlineTensiometric measurements were also carried out to investigate the effect of inorganic salts NaCl and KCl and organic salts viz sodium benzoate NaBenz and sodium salicylate NaSal on the surface properties of all prepared gemini surfactants The salts studies had shown the superior results for organic salts as compared to inorganic salts The reduction of CMC value followed the sequence as NaSal NaBenz KCl NaCl The organic salts reduced CMC value significantly as compared to inorganic salts The result also revealed that surface activity enhanced with increased salt concentration
Pagination: xxii,229p.
Appears in Departments:Department of Chemistry

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