We investigate the electrical behavior of a symmetric liquid crystal (LC) cell: elecrode-silane-LC-silane-electrode. The silane (chlorodimethyloctadecyl-silane) layer induces a homeotropic orientation of the nematic liquid crystal (NLC) molecules. The wettability technique is used to detect the change of the surface energy of the electrode upon cleaning and silane layer deposition. We report on...

Effects of modifying oil palm mesocarp fibers (OPMF) by methacrylate silane on polylactic acid (PLA)/ polycaprolactone (PCL)/clay/OPMF hybrid composites were investigated. The composites were prepared by a melt blending technique and characterized by dynamic mechanical analysis (DMA) and scanning electron microscopy (SEM). The silane-treated OPMF hybrid composites showed better tensile strength...

A silicon oxycarbide-carbon nanotube coating on steel was synthesized using a novel approach utilizing unmodified carbon nanotubes (CNT), silane surfactant and large monomer-based silsesquioxane sol. This enabled the creation of very stable dispersion, which in turn resulted homogenous layers obtained simple dip-coating process. The samples were annealed 800 °C argon to obtain uniform glassy ox...

This study evaluated the influence of silane type and temperature of silane application on push-out bond strength between fiberglass posts with composite resin core and resin cement. One hundred and sixty fiberglass posts (Exacto, Angelus) had the surface treated with hydrogen peroxide 24%. Posts were divided in 8 groups according to two study factors: air-drying temperature after silane applic...

Biopolymers are easily denatured by heating, a change in pH or chemical substances when they are immobilized on a substrate. To prevent denaturation of biopolymers, we developed a method to trap a polynucleotide on a substrate by hydrogen bonding using silica particles with surfaces modified by aminoalkyl chains ([A-AM silane]/SiO2). [A-AM silane]/SiO2 was synthesized by silane coupling reactio...

The coupling of specific antibodies to imaging agents often improves imaging specificity. However, free amine groups designed for the coupling can cause nonspecific binding of the imaging agents. We report here development of a nanocarrier, MnMEIO-silane-NH2-mPEG nanoparticles (NPs), consisting of a manganese-doped iron oxide nanoparticle core (MnMEIO), a copolymer shell of silane and amine-fun...

Organosilanes are candidates to replace chromates as metal surface pretreatments to inhibit corrosion. Current research shows that silane films are strictly water barriers and show no electrochemical corrosion inhibition. To improve the corrosion performance of silane film, therefore, the foremost objective is to improve water resistance. An understanding the interaction of silane with water is...

A new hydrophobic hexyltrimethoxysilane (HTMS) coating for polyester fabric was successfully synthesized via a one-step water-based sol-gel method under acidic condition. Five different molar ratios of HTMS: water (1;40, 1:30, 1:20, 1:12 and 1:3) were prepared the solution deposited onto by simple dip-pad-cure process. The effect content on hydrophobicity evaluated manual testing treated sample...

Soft lithography was used to replicate nanoscale features made using electron beam lithography on a polymethylmethacrylate (PMMA) master. The PMMA masters were exposed to fluorinated silane vapors to passivate its surfaces so that polydimethylsiloxane (PDMS) did not permanently bond to the master. From scanning electron microscopy, the silanization process was found to deposit a coating on the ...