Topologically Interpenetrating Polymeric Networks

Abstract
This article describes ways of producing interpenetrating poly meric networks (IPN's). Formation of IPN's is one method used in overcoming the difficulty in mixing chemically incompatible poly mers. One method of preparing IPN's is the sorption of liquid curable polymers by crosslinked polymer films, then curing the resultant swollen film. Another method involves simultaneous cross linking of the two chemically different polymers mixed in a single solution. Crosslink density gives a good measure of degree of interpenetration.

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