Cyanoacrylate nanoparticles have been studied in great detail over the past three decades with a view to their use as controlled release drug delivery materials. They have been synthesized by dispersion polymerization in aqueous media. The mechanism of polymerization is anionic where the initiating species is the hydroxyl anion that was derived from dissociation of water.For the preparation of nanoparticles to be used for hydrophilic coating, amine groups on the surface of protein molecules (from either an animal protein or cereal proteins) have been utilized as initiator for the polymerization. The resultant copolymer is amphiphilic in nature, and forms stable nanoparticle suspension. The suspension containing these nanoparticles shows an excellent coating capability on the surface of hydrophobic materials. A simple spray coating changes the wetting property of the material instantly and dramatically. When the coating is applied to solid surfaces like glass, it spreads out, preventing the beading of water. This technology is applicable to the manufacturing of glass-window cleaners.When a tiny amount (ca. 2%) of these nanoparticles are blended into latex particle suspensions, the mechanical properties of produced elastomers are prominently improved. This improvement is due to the interface-modifying effect of the nanoparticles since the incorporated nanoparticles are amphiphilic. The relationship between the mechanical property of final product and the structure of incorporated nanoparticle will be discussed.

Utilization of protein-based nanoparticles developed for hydrophilic coating as an interface modifier in the latex elastomer

248th National Meeting (2014)

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