Effect of surfactant hydrophobicity on the interfacial properties of polyallylamine hydrochloride/sodium alkylsulphate at water/hexane interface

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F13%3A00422027" target="_blank" >RIV/61389013:_____/13:00422027 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.colsurfa.2012.12.013" target="_blank" >http://dx.doi.org/10.1016/j.colsurfa.2012.12.013</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.colsurfa.2012.12.013" target="_blank" >10.1016/j.colsurfa.2012.12.013</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of surfactant hydrophobicity on the interfacial properties of polyallylamine hydrochloride/sodium alkylsulphate at water/hexane interface

Popis výsledku v původním jazyce

The bulk, interfacial and emulsion (water/hexane interface) properties of mixtures of the cationic polyelectrolyte polyallylamine hydrochloride (PAH) and anionic surfactants sodium alkyl sulphates with different alkyl chain length from C10 to C16 are studied via zeta potential (?), dynamic light scattering, interfacial tension and dilational rheology measurements. It was established that with increasing surfactant?s alkyl chain length the interfacial tension of mixtures with the polymer decreases as expected while ?-potentials change remarkably when passing from C12 to C14. Based on the hydrodynamic radii of the formed complexes it can be concluded that for SDS the most dense compact statistical coils of polycomplexes are formed due to both electrostatic and hydrophobic interactions. The large hydrodynamic radii of the PAH/STS and PAH/SHS polycomplexes indicate the formation of bulky swollen associates. The difference in the structure of the polycomplexes changing from dense dispersed

Název v anglickém jazyce

Effect of surfactant hydrophobicity on the interfacial properties of polyallylamine hydrochloride/sodium alkylsulphate at water/hexane interface

Popis výsledku anglicky

The bulk, interfacial and emulsion (water/hexane interface) properties of mixtures of the cationic polyelectrolyte polyallylamine hydrochloride (PAH) and anionic surfactants sodium alkyl sulphates with different alkyl chain length from C10 to C16 are studied via zeta potential (?), dynamic light scattering, interfacial tension and dilational rheology measurements. It was established that with increasing surfactant?s alkyl chain length the interfacial tension of mixtures with the polymer decreases as expected while ?-potentials change remarkably when passing from C12 to C14. Based on the hydrodynamic radii of the formed complexes it can be concluded that for SDS the most dense compact statistical coils of polycomplexes are formed due to both electrostatic and hydrophobic interactions. The large hydrodynamic radii of the PAH/STS and PAH/SHS polycomplexes indicate the formation of bulky swollen associates. The difference in the structure of the polycomplexes changing from dense dispersed

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CD - Makromolekulární chemie

OECD FORD obor

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Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Colloids and Surfaces. A - Physicochemical and Engineering Aspects

ISSN

0927-7757

e-ISSN

—

Svazek periodika

438

Číslo periodika v rámci svazku

5 December

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

141-147

Kód UT WoS článku

000328011500020

EID výsledku v databázi Scopus

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