Polymeric nanoparticles stabilized by surfactants: kinetic studies

Kód výsledku v IS VaVaI

RIV/61389013:_____/11:00361350 - isvavai.cz

Výsledek na webu

http://dx.doi.org/10.1080/01932691.2010.497697

DOI - Digital Object Identifier

10.1080/01932691.2010.497697

Jazyk výsledku

angličtina

Název v původním jazyce

Polymeric nanoparticles stabilized by surfactants: kinetic studies

Popis výsledku v původním jazyce

A kinetic study was carried out to monitor the time-dependent formation of surfactant-stabilized polymeric nanoparticles prepared by controlled phase separation. The nanoparticles were made of poly(methylmethacrylate) or polystyrene and several ionic andnonionic surfactants. The dispersion was prepared by fast mixing a solution of the polymers in organic solvents with a solution of a surfactant in water. We observed the formation of well-defined nanoparticles measured by time-resolved small-angle x-rayscattering (TR-SAXS). Our results suggest that the kinetics for the formation of nanoparticles comprising ionic surfactants is much faster (in the range of milliseconds) than that for nanoparticles comprising nonionic surfactants (on the time scales ofseveral seconds). We were able to observe the transformation of particle surface from transient structure to hard sphere one in real time. Some systems manifest a plethora of structural changes that demands further experimental research.

Název v anglickém jazyce

Polymeric nanoparticles stabilized by surfactants: kinetic studies

Popis výsledku anglicky

A kinetic study was carried out to monitor the time-dependent formation of surfactant-stabilized polymeric nanoparticles prepared by controlled phase separation. The nanoparticles were made of poly(methylmethacrylate) or polystyrene and several ionic andnonionic surfactants. The dispersion was prepared by fast mixing a solution of the polymers in organic solvents with a solution of a surfactant in water. We observed the formation of well-defined nanoparticles measured by time-resolved small-angle x-rayscattering (TR-SAXS). Our results suggest that the kinetics for the formation of nanoparticles comprising ionic surfactants is much faster (in the range of milliseconds) than that for nanoparticles comprising nonionic surfactants (on the time scales ofseveral seconds). We were able to observe the transformation of particle surface from transient structure to hard sphere one in real time. Some systems manifest a plethora of structural changes that demands further experimental research.

Druh

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

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

GAP208/10/1600: Polymerní částice a nanostrukturované materiály stabilizované povrchově aktivními molekulami

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

Journal of Dispersion Science and Technology

ISSN

0193-2691

e-ISSN

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Svazek periodika

32

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

6

Strana od-do

1105-1110

Kód UT WoS článku

000295219200005

EID výsledku v databázi Scopus

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