Preparation of spherical nanocomposites consisting of silica core and polyacrylate shell by emulsion polymerization

Abstract

Nanocomposite particles consisting of silica (inorganic core) and polyacrylate (organic shell) were prepared in a form of emulsion by a new and simple methodthe emulsion polymerization of acrylic monomers in the presence of silica sol. The key technique of the present emulsion polymerization, which made the formation of the nanocomposites successful, is the usage of nonionic surfactant above its cloud point. The morphology of the composite was investigated by DLS, AFM, and TEM, which clearly showed formation of the core-shell-type particles. A transparent film was prepared by casting the emulsion, which showed high resistibility against organic solvents.

In situ emulsion polymerization and characterization of poly(butyl acrylate‐co‐methyl methacrylate)/silica nanosystems

“…It is assumed that with such morphology the best distribution of the inorganic component in emulsions and films prepared from emulsions can be achieved. To achieve the core-shell morphology it is necessary to bring on the filler surface functional groups that are reactive in the polymerization process (monomer [10][11][12] and initiator [13][14][15][16] with the use of nonionic emulsifiers) or to modify the surface of the filler, e.g., with silanes [17][18][19][20]. Functional groups [9] can be chemically bounded or physically adsorbed onto the filler surface and can be introduced before or during polymerization procedure.…”

Polymer Nanocomposites for Emulsion‐Based Coatings and Adhesives

“…Mizutani et al . prepared nano‐SiO 2 /poly(BA:MMA, 65:35 w/w) latexes via blending and in situ emulsion polymerization techniques for wall paint applications.…”

Synthesis of latex based antibacterial acrylate polymer/nanosilver via in situ miniemulsion polymerization

“…21 One technique in which the in situ polymerization of monomers in the presence of metal nanoparticles can be performed is the emulsion polymerization. The preparation of organic-inorganic nano-hybrids in a form of emulsion is highly preferred due to the ease of processability 22,23 and its ability to distribute small concentrations of nanoparticles into nanoscale independent matrices. The large nanoparticle/polymer interfacial interactions cause improvements in the mechanical, thermal and rheological properties.…”