The effect of tin dioxide (SnO2) on the anatase-rutile phase transformation of titania (TiO2) in mica-titania pigments and their use in paint

2011-08-01
Topuz, Berna Burcu
Gündüz, Güngör
MAVİŞ, BORA
Colak, Uner
The synthesis of mica-titania special effect pigment and the effect of rutile promoting additive, tin dioxide (SnO2), on the phase transformation of titanium dioxide (TiO2) were investigated. SnO2 coating with variable thicknesses on sieved and pre-treated muscovite mica prior to TiO2 coating yields a pearlescent pigment with higher rutile-to-anatase ratio. Different than what is reported in a few cases, not the co-deposition of SnO2 and TiO2, but the coating of SnO2 before TiO2 was found critical in obtaining TiO2 coatings consisting of 95% rutile phase at 1073 K. A calcination temperature as low as 1073 K resulted in the preservation of substrate's structural integrity. Scanning electron microscopy analyses showed that SnO2 promotes TiO2 growth at certain nucleation points rather than random nucleation points. Mica-titania pigments were incorporated in the acrylic based paints and gloss and hardness characteristics of the paint specimens were measured. Specimens with increased rutile content showed improved gloss.
DYES AND PIGMENTS

Suggestions

The effect of triethanolamine on thermal decomposition of GAP
Fazhoğlu, Hatice; Hacaloğlu, Jale (2002-01-01)
The effect of triethanolamine (TEA) on thermal behavior of glycidyl azide polymer (GAP) has been investigated by direct pyrolysis mass spectrometry technique. It has been observed that thermal degradation of GAP-TEA mixture also begins with the cleavage of the side groups as in the case of GAP. Again, the main decomposition started with the elimination of molecular nitrogen from the azide functional group, and a quite similar degradation mechanism has been proposed. The increase in the thermal stability of ...
The flame retardant effect of aluminum phosphinate in combination with zinc borate, borophosphate, and nanoclay in polyamide-6
DOĞAN, Mehmet; Bayramlı, Erdal (2014-01-01)
The effect of zinc borate (ZnB), borophosphate (BPO4), and organoclay were studied to improve the flame retardancy of polyamide-6 composites containing organic phosphinates. The flame retardancy of polyamide-6 composites was investigated using limiting oxygen index (LOI), Underwriters Laboratories (UL-94) standard, thermogravimetric analysis, Fourier transform infrared spectroscopy, and mass loss calorimeter. The addition of 15wt% aluminum phosphinate (AlPi) increased the LOI value from 22.5 to 29.5, and V0...
The effects of acid pretreatment and surface stresses on the evolution of impurity clusters and graphene formation on Cu foil
Senyildiz, Dogukan; Ogurtani, Omer Tarik; BÜKE, ZARİFE GÖKNUR (2017-12-15)
In this study, the effects of acid pretreatment together with the surface stresses are studied systematically to control the densities of Si and Ca based impurities on the surface and to understand their effects on the final graphene morphology formed on Cu foil via CVD. In order to investigate the surface coverage and morphology of graphene, in addition to scanning electron microscope (SEM) studies, graphene grown on Cu foils are oxidized in air to reveal the graphene domains under the optical microscope (...
The effects of some methacrylate monomers used as liquid component on tensile and flexural strengths of a poly (methyl methacrylate) denture base resin
Do'an, Orhan Murat; Bolayir, Giray; Keskin, Selda; Boztug, Ali; Do'an, Arife; Bek, Buelent (2006-12-01)
This study was conducted to observe the effect of different monomers on tensile and flexural strengths of poly (methyl methacrylate) (PMMA) denture base resin when they were used as a liquid component. A conventional heat-cured denture base polymer powder was mixed with ethyl, isobutyl and tert-butyl methacrylate monomers, respectively. After the polymerization process was completed, the tensile and flexural strength values of these specimens were compared with those that of PMMA resin specimens polymerized...
The use of gold and silver nanoparticles for surface enhanced fluorescence (SEF) of Dyes
Öztürk, Tacettin; Volkan, Mürvet; Department of Chemistry (2010)
This study focuses on preparing surface enhanced fluorescence (SEF) substrates for use in the enhancement of the emission signal of rhodamine B and fluorescein dyes. Fluorescence spectroscopy has been widely utilized owing to its high sensitivity. SEF is a process where the interactions of fluorophores with the localized surface plasmons of metal nanoparticles results in fluorescence enhancement, increased photostability and rates of system radiative decay which leads to a decreased lifetime. One of the mos...
Citation Formats
B. B. Topuz, G. Gündüz, B. MAVİŞ, and U. Colak, “The effect of tin dioxide (SnO2) on the anatase-rutile phase transformation of titania (TiO2) in mica-titania pigments and their use in paint,” DYES AND PIGMENTS, pp. 123–128, 2011, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/57421.