Method of making polyvinylidene difluoride structure

Details Method of making polyvinylidene difluoride structure Method of making polyvinylidene difluoride structure

1988-05-24

1989-08-08

Lawerence, Evan K.

Coating processes

Foraminous product produced

Filter, sponge, or foam

427302, 427322, 4273935, B05D 310, B05D 500

Patent

active

048551635

ABSTRACT:
A polyvinylidene difluoride structure with a critical surface energy of at least about 80 dynes/cm and a method of making such a structure comprising the steps of contacting a polyvinylidene difluoride structure with an alkalized solution, such as potassium hydroxide, to form activated sites on the surface of the structure; rinsing the activated structure to remove residual alkali; contacting the rinsed, activated structure with a solution of a polymerization initiator, such as potassium peroxydisulfate, and a polymerizable vinylic monomer, such as acrylic acid; and polymerizing and grafting the monomer to the activated structure to form a polyvinylidene difluoride structure with a critical surface energy of at least about 80 dynes/cm.

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