Functionalized thin film polyamide membranes
AssigneePolymers Crc Ltd.
InventorsMarina H. Stenzel, Ricardo Godoy-Lopez, Simon Harrisson, Ezio Rizzardo
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Abstract
The present invention relates to a method of preparing RAFT, ATRP or NMRP functionalized thin film composite (TFC) polyamide membranes on a microporous substrate. A further aspect of the invention is the subsequent modification of the thin film composite polyamide membrane by controlled free radical polymerization (CFRP) to yield membranes having new chemical and physical properties, e.g. antifouling and/or antibacterial properties. Further aspects of the invention are the functionalized thin film composite (TFC) polyamide membranes on the microporous substrate itself and the membranes modified by controlled free radical polymerization.
Claims17
A method for the preparation of a functionalized thin film composite polyamide membrane, which method comprises carrying out on a microporous substrate a
- polycondensation reaction of
- a) an aromatic amine with at least two amine functionalities;
- with
- an aromatic acyl halide with at least 3 —C(O)Cl groups;
- in the presence of
- b1) a radical addition fragmentation chain transfer (RAFT) control agent or
- b2) an atom transfer radical polymerization (ATRP) control agent or
- b3) a nitroxide-mediated radical polymerization (NMRP) control agent having a glycidyl functionality.
A method according to 4 where the polycondensation reaction is carried out in the presence of b1) a RAFT control agent of formula (IIIa) or (IIIb).
Dependencies are inferred from the claim text.