Synthesis and characterization of hydrophilic nanocomposite coating on glass substrate

Abstract

Hydrophilic coatings based on 3-glicidoxy propyl trimethoxy silane (GPTMS) and polyethylene glycol (PEG) were prepared with the incorporation of tetramethoxysilane (TMOS) and silica nanoparticle colloidal suspension by a sol-gel process. Characterization of the coatings has been performed by Fourier Transform Infrared (FTIR) and Attenuated Total Reflectance Infrared (ATR-IR) techniques. Morphological properties were characterized by Scanning Electron Microscopy (SEM). The distribution of Si atoms in the hybrid system was obtained by Si mapping. The particle size in sol solution of the coating was measured by light scattering analyzer. Optical properties were characterized by using UV-vis spectrophotometer.The hydrophilicity of the coating was determined by contact angle measurements, and also the results have been confirmed by surface energy and water uptake investigations. The obtained results indicate that the surfactants affected the contact angles remarkably but did not change the transparency. It has been found that applying silica nano particles leads to coatings with different properties than those using TMOS, while siloxane contents were the same in these two set of coatings.

Polystyrene/calcium phosphate nanocomposites: Contact angle studies based on water and methylene iodide

“…Contact angle of water on the ABS-clay nanocomposite materials increased with respect to the increase in clay content. Several other reports on the wetting phenomena on the polymer nanocomposites appeared in the literature recently [17][18][19][20][21]. Here our aim was to study the wetting behaviour of the polystyrene/calcium phosphate nanocomposites with respect to water and methylene iodide.…”

Fabrication of Photonic/Microfluidic Integrated Devices Using an Epoxy Photoresist

“…[15] However, the treatment only slightly improved SU-8 adhesion on Pyrex at low exposure doses but it was still not possible to provide an acceptable processing window. Further effort of introducing chemical bonding using coupling agent GPTMS [16,17] did not show significant improvement either. This demonstrated that the surface adhesion was not the only issue that dictated the process.…”

Silicate Matrix with Implanted Peptide Self-Assemblies for Smart Sensor Electrodes and Coated Glass Systems

“…These porous silicate matrices obtained by the low-temperature sol-gel method act as promising host matrix for the encapsulation of biomolecules [1,5]. So as a result, pore-size motif is one of the key elements which enables to accomplish the entrapment of wide range of bio-molecules and opens up different applications [40][41][42][43][44][45][46][47][48]. This work reports such potent core-shell mesoporous silicate entrapped peptide nanotubes for smart glass coating applications and to create new smart sensor electrodes.…”