Influence of Montmorillonite Nanoparticles on Polychloroprene Adhesive Properties

The aim of this study was to investigate the influence of montmorillonite nanoparticles on polychloroprene adhesive properties. This paper deals with obtaining ecologic adhesive nanodispersions based on chloroprene elastomer grafted with functional chemical groups on the chain of the basic elastomer compounded with Na-montmorillonite (Cloisite Na +). The water dispersing of an elastomer with significant crystallization characteristics (which is specific for the elastomers used as adhesives, as chloroprene rubbers) subjected previously to chemical grafting and dispersion by means of fillers (Na-montmorillonite - Cloisite Na +), dispersing and crosslinking agents will be tested. This way a solution of grafted elastomer in methylene chloride is prepared. To the cold solution a water solution of (anionic or non-ionic) surfactant is added under strong stirring provided by an agitator with high shearing rate. The resulting ecological adhesive nanodispersions were characterized using FTIR, SEM, particle size distribution analysis and peeling resistance. The presence of lateral chains in the grafted elastomer and montmorillonite nanoparticles influence its characteristics. Introduction of graftings and dispersion will be accomplished at a nano scale and using a high accuracy technology in chemistry, namely through forming active sites on the basic elastomer macromolecule, on which reactive groups such as methyl methacrylate will lead to an increase in bonding capacity.