EFFECT OF CONCENTRATION AND MOLECULAR MASS OF PEO ON THE MICELLIZATION AND THERMODYNAMIC BEHAVIOUR OF CETYLTRIMETHYLAMMONIUM BROMIDE (CTAB) IN AQUEOUS PEO-CTAB MIXED SYSTEM

Polymer-surfactant mixed systems have attracted much attention due to their importance from the academic as well as applied point of view. Therefore, to evaluate the thermodynamic properties of polymer-surfactant self-assembled system, the critical micelle concentration (CMC) of CTAB and CTAB/PEO mi...

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Autores principales:	RAUF,ABDUR, BALOCH,MUSA KALEEM, KHAN,ABBAS, KHAN,ZAFARULLAH, RAUF,SALMA
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2016
Materias:	Thermodynamics micellization surface tension hydrodynamic radius light scattering PEO
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072016000300001
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spelling	oai:scielo:S0717-970720160003000012017-06-14EFFECT OF CONCENTRATION AND MOLECULAR MASS OF PEO ON THE MICELLIZATION AND THERMODYNAMIC BEHAVIOUR OF CETYLTRIMETHYLAMMONIUM BROMIDE (CTAB) IN AQUEOUS PEO-CTAB MIXED SYSTEMRAUF,ABDURBALOCH,MUSA KALEEMKHAN,ABBASKHAN,ZAFARULLAHRAUF,SALMA Thermodynamics micellization surface tension hydrodynamic radius light scattering PEO Polymer-surfactant mixed systems have attracted much attention due to their importance from the academic as well as applied point of view. Therefore, to evaluate the thermodynamic properties of polymer-surfactant self-assembled system, the critical micelle concentration (CMC) of CTAB and CTAB/PEO mixture was determined at different CTAB/PEO ratios and various molecular masses of PEO by employing surface tensiometric, conductometric, and light scattering techniques. The CMC of CTAB was increased as the concentration and molecular mass of the polymer increased. Using surface tensiometry, the thermodynamics of adsorption, surface excess concentration and the minimum area occupied by surfactant molecules for different surfactant-polymer mixtures were also evaluated. CMC, area per molecule, free energy of micellization and degree of counter ion binding were also determined. It was found that most of these parameters increased as the concentration of polymer increased, whereas the surface excess concentration was found to decrease by increasing the polymer ration in the mixed system. The hydrodynamic radius (Rh) of the micelle particles calculated from dynamic light scattering technique showed a similar trend. Most of the results from different techniques support each others.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.61 n.3 20162016-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072016000300001en10.4067/S0717-97072016000300001
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Thermodynamics micellization surface tension hydrodynamic radius light scattering PEO
spellingShingle	Thermodynamics micellization surface tension hydrodynamic radius light scattering PEO RAUF,ABDUR BALOCH,MUSA KALEEM KHAN,ABBAS KHAN,ZAFARULLAH RAUF,SALMA EFFECT OF CONCENTRATION AND MOLECULAR MASS OF PEO ON THE MICELLIZATION AND THERMODYNAMIC BEHAVIOUR OF CETYLTRIMETHYLAMMONIUM BROMIDE (CTAB) IN AQUEOUS PEO-CTAB MIXED SYSTEM
description	Polymer-surfactant mixed systems have attracted much attention due to their importance from the academic as well as applied point of view. Therefore, to evaluate the thermodynamic properties of polymer-surfactant self-assembled system, the critical micelle concentration (CMC) of CTAB and CTAB/PEO mixture was determined at different CTAB/PEO ratios and various molecular masses of PEO by employing surface tensiometric, conductometric, and light scattering techniques. The CMC of CTAB was increased as the concentration and molecular mass of the polymer increased. Using surface tensiometry, the thermodynamics of adsorption, surface excess concentration and the minimum area occupied by surfactant molecules for different surfactant-polymer mixtures were also evaluated. CMC, area per molecule, free energy of micellization and degree of counter ion binding were also determined. It was found that most of these parameters increased as the concentration of polymer increased, whereas the surface excess concentration was found to decrease by increasing the polymer ration in the mixed system. The hydrodynamic radius (Rh) of the micelle particles calculated from dynamic light scattering technique showed a similar trend. Most of the results from different techniques support each others.
author	RAUF,ABDUR BALOCH,MUSA KALEEM KHAN,ABBAS KHAN,ZAFARULLAH RAUF,SALMA
author_facet	RAUF,ABDUR BALOCH,MUSA KALEEM KHAN,ABBAS KHAN,ZAFARULLAH RAUF,SALMA
author_sort	RAUF,ABDUR
title	EFFECT OF CONCENTRATION AND MOLECULAR MASS OF PEO ON THE MICELLIZATION AND THERMODYNAMIC BEHAVIOUR OF CETYLTRIMETHYLAMMONIUM BROMIDE (CTAB) IN AQUEOUS PEO-CTAB MIXED SYSTEM
title_short	EFFECT OF CONCENTRATION AND MOLECULAR MASS OF PEO ON THE MICELLIZATION AND THERMODYNAMIC BEHAVIOUR OF CETYLTRIMETHYLAMMONIUM BROMIDE (CTAB) IN AQUEOUS PEO-CTAB MIXED SYSTEM
title_full	EFFECT OF CONCENTRATION AND MOLECULAR MASS OF PEO ON THE MICELLIZATION AND THERMODYNAMIC BEHAVIOUR OF CETYLTRIMETHYLAMMONIUM BROMIDE (CTAB) IN AQUEOUS PEO-CTAB MIXED SYSTEM
title_fullStr	EFFECT OF CONCENTRATION AND MOLECULAR MASS OF PEO ON THE MICELLIZATION AND THERMODYNAMIC BEHAVIOUR OF CETYLTRIMETHYLAMMONIUM BROMIDE (CTAB) IN AQUEOUS PEO-CTAB MIXED SYSTEM
title_full_unstemmed	EFFECT OF CONCENTRATION AND MOLECULAR MASS OF PEO ON THE MICELLIZATION AND THERMODYNAMIC BEHAVIOUR OF CETYLTRIMETHYLAMMONIUM BROMIDE (CTAB) IN AQUEOUS PEO-CTAB MIXED SYSTEM
title_sort	effect of concentration and molecular mass of peo on the micellization and thermodynamic behaviour of cetyltrimethylammonium bromide (ctab) in aqueous peo-ctab mixed system
publisher	Sociedad Chilena de Química
publishDate	2016
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072016000300001
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_version_	1714200894747181056

EFFECT OF CONCENTRATION AND MOLECULAR MASS OF PEO ON THE MICELLIZATION AND THERMODYNAMIC BEHAVIOUR OF CETYLTRIMETHYLAMMONIUM BROMIDE (CTAB) IN AQUEOUS PEO-CTAB MIXED SYSTEM

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