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    Leather surface refinement with application of the TiO 2 -SiO 2 -GLYMO nanocomposite and lacquer coating
    (Society of Leather Technologists and Chemists, 2018) Kaygusuz M.; Işik N.O.; Meyer M.; Aslan A.
    In the present study the effect of TiO 2 -SiO 2 -GLYMO nanocomposite on surface properties of leather was investigated. The TiO 2 -SiO 2 -GLYMO composite was prepared through the sol-gel route from tetraethoxysilane (TEOS) and titanium n-butoxide (TBO). 3-glycidoxypropyltrimethoxysilane (GLYMO) was added as coupling agent to provide a stable bond between metal oxides and leather substrate. The prepared composite was applied by spraying on the top coat of leathers in finishing. The surface properties observed by scanning electron microscopy (SEM) showed an even and homogenous coating obtained on leather by application of the composite in the presence of lacquer. The chemical structure of composite films was examined via Fourier transform infrared (FTIR) and Si-O-Ti bond and opening of epoxy rings of GLYMO were revealed. The presence of Ti and Si in the composite treated leather samples was ascertained by inductively coupled plasma optic emission spectrometer (ICP-OES). The results of the physical and fastness tests indicated that the use of TiO 2 -SiO 2 -GLYMO nanocomposite improves some performance characteristics of leather such as finish adhesion, dry and wet rubbing fastness, colour fastness to light and UV light. The results are promising for the refinement of leather surface with the application of the nanocomposite in the finishing process. © 2018 Society of Leather Technologists and Chemists. All rights reserved.
  • Küçük Resim Yok
    Öğe
    Leather surface refinement with application of the TiO2-SiO2-GLYMO nanocomposite and lacquer coating
    (Society of Leather Technologists and Chemists, 2018) Kaygusuz M.; Işik N.O.; Meyer M.; Aslan A.
    In the present study the effect of TiO2-SiO2-GLYMO nanocomposite on surface properties of leather was investigated. The TiO2-SiO2-GLYMO composite was prepared through the sol-gel route from tetraethoxysilane (TEOS) and titanium n-butoxide (TBO). 3-glycidoxypropyltrimethoxysilane (GLYMO) was added as coupling agent to provide a stable bond between metal oxides and leather substrate. The prepared composite was applied by spraying on the top coat of leathers in finishing. The surface properties observed by scanning electron microscopy (SEM) showed an even and homogenous coating obtained on leather by application of the composite in the presence of lacquer. The chemical structure of composite films was examined via Fourier transform infrared (FTIR) and Si-O-Ti bond and opening of epoxy rings of GLYMO were revealed. The presence of Ti and Si in the composite treated leather samples was ascertained by inductively coupled plasma optic emission spectrometer (ICP-OES). The results of the physical and fastness tests indicated that the use of TiO2-SiO2-GLYMO nanocomposite improves some performance characteristics of leather such as finish adhesion, dry and wet rubbing fastness, colour fastness to light and UV light. The results are promising for the refinement of leather surface with the application of the nanocomposite in the finishing process. © 2018 Society of Leather Technologists and Chemists. All rights reserved.
  • Küçük Resim Yok
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    TiO2-SiO2-GLYMO nanocomposite prepared by sol-gel processing for leather finishing
    (International Union of Leather Technologists and Chemists Societies (IULTCS), 2015) Koizhaiganova M.; Aslan A.; Göde C.; Meyer M.
    TiO2 is one of the most studied due to its unique characteristics: non-Toxicity, good chemical stability, strong mechanical properties, low cost, and excellent photocatalytic performance. SiO2 has high thermal stability, excellent mechanical strength and helps to create new catalytic active sites due to interaction between TiO2 and SiO2. GLYMO (y-glycidoxypropyltrimethoxysilane) is an organically modified alkoxide, whose organic group contains an epoxide ring that can be cross-linked to form a poly(ethylene oxide) chain and acts as network former. In this work, we propose to prepare TiO2-SiO2 nanocomposite with addition of GLYMO at ambient temperature via sol-gel method. In this context, in order to reveal the characteristics, turbidity, viscosity and pH of the nanocomposite were measured. The chemical structure of the nanocomposite was evaluated by means of Fourier Transform Infrared Spectroscopy (FTIR). Atomic Force Microscopy (AFM) and Scanning Electron Microscopy (SEM) were employed to characterize the surface properties of composite film. In summary, the TiO2-SiO2-GLYMO nanocomposite was successfully synthesized using the sol-gel method. The turbidity value of the nanocomposite was 9.93 ntu. The nanocomposite was mildly acidic with a pH value of 4.80. It was determined that the viscosity of the nanocomposite was approximately equal to 2-5 mPa.s. The particles sizes were approximately 10.5 nm. The thin and transparent coating obtained from the nanocomposite was evenly distributed. From the results obtained it was revealed that the TiO2-SiO2-GLYMO nanocomposite can be used in leather finshing.