Polyvinylidene difluoride structure
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United States of America Patent
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Sep 27, 1988
Grant Date -
N/A
app pub date -
May 1, 1986
filing date -
May 1, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
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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