A modified polyamide membrane and method for making and using the same.
The present invention includes many embodiments including methods
comprising contacting a polyamide membrane with certain modifiers,
including but not limited to certain oxazoline and/or thiazoline-based
compounds, derivatives and polymers thereof. In one embodiment, the
surface of a polyamide membrane is coated with a solution including a
polyoxazoline and optionally a polyalkylene oxide material, followed by
optional heating. Preferred embodiments may exhibit improved performance,
e.g. increased rejection of certain species, (e.g. sodium chloride and/or
boric oxides such as boric acid or various borate salts), reduced
fouling, improved antimicrobial properties, and/or improved storage
stability.