Polyvinylidene difluoride structure and method of making

Details Polyvinylidene difluoride structure and method of making Polyvinylidene difluoride structure and method of making

C - Chemistry, Metallurgy

08

J

117/88.5

C08J 5/22 (2006.01) B01D 39/16 (2006.01) B01D 67/00 (2006.01) B01D 71/34 (2006.01) C08J 7/16 (2006.01)

Patent

CA 1302177

Abstract A polyvinylidene difluoride structure with a critical surface energy of at least 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 potas- sium hydroxide, to form activated sites on the sur- face of the structure; rinsing the activated struc- ture to remove residual alkali contacting the rinsed, activated structure with a solution of a polymerization initiator, such as potassium peroxydi- sulfate, and a polymerizable vinylic monomer, such as acrylic acid; and polymerizing and grafting the mono- mer to the activated structure to form a polyvinyli- dene difluoride structure with a critical surface energy of at least 80 dynes/cm.

536104

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