Preparation of PEG-grafted silica particles using emulsion method

Synthesis of poly(ethylene glycol) (PEG) grafted silica nanoparticles with a minimum adhesion of proteins via one-pot one-step method

“…The PEG coating could reduce the protein (BSA) adsorption onto the surface of the particles. Oh et al [17] used a two-step process to prepare PEG-grafted silica NPs via emulsion method. They showed that PEG could increase average pore diameters in the NPs.…”

New Sol-gel Formulations to Increase the Barrier Effect of a Protective Coating Against the Corrosion and Wear of Galvanized Steel

“…The process has the following advantages: (I) The stoichiometry is easy to control and adjust 4 , (II) it allows to fabricate high-purity films with evenly distributed components 17 , and (III) the film can be processed under normal pressures and low temperature. In the last few decades, a large number of hybrid materials produced through the sol-gel process have been prepared using various inorganic precursors and polymers 18,19 . The main steps are the hydrolysis and condensation of metal alkoxides to obtain metaloxane chains.…”

Novel Grafting onto Silica via Aldehyde Functionality

“…Indeed, various functional alkylalkoxysilane and chlorosilane have been used whereby the hydrolysis of the alkoxy (or chloride) groups and subsequent reaction with silanols on the surface of the silica results in stable siloxane bonds. Recent examples of such silane coupling agents used in this way include: γ-aminopropyltriethoxysilane [2] vinyltriethoxysilane [3], 3-methacryloylpropyltrimethoxysilane [4], chloroalkylsilane [5], 3-glyci-doxypropyldimethylethoxysilane [6], 3-chlorodimethylsilylpropyl 2-bromoisobutyrate [7], vinyltriethoxysilane [3], 3-triethoxysilylpropylisocyanate [8], 3-(2-aminoethyl-amino) propyltrimethoxysilane [9], 3-methacryloxypropyltrimethoxysilane [10], 3-aminopropyltriethoxysilane and 3-glycidoxypropyltrimethoxysilane [11] and (11′-chlorodimethylsilylundecyl)-2-chloro-2-phenylacetate [12]. It is apparent that many of these organosilanes are specific to a particular system and are not readily available.…”