POLYMER-POLYMER BLENDS BASED ON CRAZED PO LYMERS

A method for the development of polymer-polymer blends based on crazed polymer matrices prepared by classical and delocalized crazing is con sidered. General features of formation of the structure of such blends and specific features of their sorption, mechanical, and electrical p roperties are discussed. The above polymer-polymer blends are similar to interpenetrating polymer networks and are characterized by micropha se separation into two continuous phases with a high level of dispersi on of the components. A distinctive property of the blends based on so lvent-crazed polymers concerns the molecular orientation of components and the possible development of anisometric structures with different distributions of the components in the volume of polymer samples. Var ying the mode of solvent crazing and the conditions of tensile drawing of the initial polymer allows one to control the composition, structu re,nd properties of the polymer-polymer blends.