Peroxidation of the interface of colloidal systems as new possibilities for design of compounds

Abstract

Present work is devoted to the peroxidic modification of dispersed phase surface of various polymeric colloidal systems: emulsions, latexes, polymer-polymer mixtures, polymers reinforced and filled by dispersion, etc. by heterofunctional polymeric peroxides (HEPP).

HEPP are carbonchain polymers which have statistically located peroxidic (R-OO-R′) and highly polar functional groups such as carboxylic, anhydride, pyridine and others along the main chain.

Sharp difference in the polarity of these groups gives to the macromolecules of HFPP the capability of adsorption at the interface in various polymeric colloidal systems. The reactions of the functional groups provide chemical bonding of the macromolecules to the interfacial surface. Thus, in consequence of physical adsorption or chemisorption of HFPP the peroxidation of the interfacial surface, that is the localization of active -OO- groups on the surface, is attained.

Further such -OO- groups can provide the grafting of matrix polymer macromolecules to the dispersed phase surface. The progress of grafting reactions can be carried out in the processes of polymerizational filling, composites’ curing or rubber mixture vulcanization.

The activation of latex particle surface by surface-active HFPP is of special interest. Thereby, one can solve both environmental problems and approach the modification of latexes and later polymers by absolutely new ways.