Substrate-induced coagulation (SIC) of nano-disperse titania in non-aqueous media : the dispersibility and stability of titania in N-methyl-2-pyrrolidinone

Basch, Angelika; Strnad, Simona; Ribitsch, Volker

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Naslov:	Substrate-induced coagulation (SIC) of nano-disperse titania in non-aqueous media : the dispersibility and stability of titania in N-methyl-2-pyrrolidinone
Avtorji:	ID Basch, Angelika (Avtor) ID Strnad, Simona (Avtor) ID Ribitsch, Volker (Avtor)
Datoteke:	http://dx.doi.org/10.1016/j.colsurfa.2008.09.051
Jezik:	Angleški jezik
Vrsta gradiva:	Neznano
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	FS - Fakulteta za strojništvo
Opis:	Dispersions of 1 wt% titandioxide (titania or TiO2) were investigated with respect to their stability in non-aqueous media. The objective of this work was to find conditions for the substrate-induced coagulation (SIC) process in N-methyl-2-pyrrolidinone (NMP). The SIC process is a dip-coating process that enhances adsorption of fine dispersed particles on a pre-conditioned surface. The wetting behavior of titania and NMP was investigated by the powder contact angle method. The absorption process of the polar solvent NMP on the acid oxide TiO2and Aerosol OT (AOT) (bis-2-ethylhexyl sodium sulfosuccinate) was also investigated and a polar or hydrophilic interaction was found. The stability of titania in NMP dispersions and the influence of the solvent AOT and the electrolyte LiCl was investigated. By studying the electrophoretic mobilities of titania particles in NMP and the influence on solutes by the electrophoretic method phase analysis light scattering (PALS) and the electroacoustic method this paper explores suitable conditions for non-aqueous substrate-induced coagulation of titania.
Ključne besede:	contact angle, non-aqueous dispersions, electrophoretic mobilities, substrate-induced coagulation, titandioxide, zeta potential
Leto izida:	2009
PID:	20.500.12556/DKUM-27355
UDK:	544.638:677
COBISS.SI-ID:	12985366
ISSN pri članku:	0927-7757
NUK URN:	URN:SI:UM:DK:M1QDJ9MU
Datum objave v DKUM:	01.06.2012
Število ogledov:	2554
Število prenosov:	97
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Področja:	Ostalo
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Gradivo je del revije

Naslov:	Colloids and surfaces
Skrajšan naslov:	Colloids surf., A Physicochem. eng. asp.
Založnik:	Elsevier
ISSN:	0927-7757
COBISS.SI-ID:	15328517

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