Charged Porous Polymeric Membranes and Their Preparation
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United States of America Patent
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Issued Date -
Jun 23, 2011
app pub date -
Dec 20, 2010
filing date -
Dec 21, 2009
priority date (Note) -
Abandoned
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Abstract
A charged porous polymeric membrane comprises a porous polymeric membrane substrate comprising a polymeric membrane material and a first polymer having a first functional group, the first polymer is compatible with the membrane material, and a charged polymer has a second functional group, the charged polymer can react with the first polymer to bond the charged polymer to the first polymer, forming a charged coating on the membrane outer and inner surfaces. The membrane may be a microporous or an ultrafiltration membrane. The membrane may be a hollow fiber, flat sheet, or tubular membrane. Methods of manufacturing the membranes and method of using of the membranes to remove viral particles from contaminated water are further described.
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