Modification of the chemical inhomogeneity - of macromolecular materials

TLDR: In this article, a modification of the chemical inhomogeneity of macromolecular materials is proposed, which results in product with closely defined chemical inhOMogeneity which is normally achieved only by complicated polymerisation or other reaction methods.

Abstract: Modification of the chemical inhomogeneity of macromolecular materials. To a soln. in a solvent or solvent mixture of the macromolecular material are added one or more polymers which are soluble in the solvent (mixture), in an amount above the compatibility limit of the polymer mixture; the layers forming by subsequent phase separation are separated from one another; and the polymers dissolved therein are isolated by concentration of the solutions or pptn. by mans of a suitable pptng. agent. The process results in manufacture of product with closely defined chemical inhomogeneity which is normally achieved only by complicated polymerisation or other reaction methods.