THIN FILM COMPOSITE RESERVE OSMOSIS MEMBRANE WITH ANTIFOULING PROPERTIES AND METHOD OF PREPARATION OF THE SAME

摘要

The present invention relates to the preparation of novel antibiofouling Thin Film Composite (TFC) Reverse Osmosis (RO) membranes on porous polysulfone (PSf) support of thickness 30-40 micron. TFC-RO membranes were prepared by interfacial polymerization between neat m-phenylenediamine (MPD) in water and pyridine tricarboxylic acid chloride (PTC) or a mixture containing PTC and trimesoyl chloride (TMC) in mixture of hexane+dichloromethane. The best results in terms of flux, NaCl rejection and antibiofouling property were obtained with 2:3-1:1 weight ratio of PTC to TMC. The present invention also relates to the preparation of antibiofouling TFC membranes by the interfacial polymerization between mixture of melamine+MPD and TMC. The best results in terms of antibiofouling property, NaCl rejection and flux were obtained with 1:1 weight ratio of MPD to melamine.

主权项

1. Thin film composite (TFC) reverse osmosis (RO) membrane on a support wherein membrane comprises polyfunctional acid chloride(s) and polyfunctional amine(s) in the ratio ranging between 3:1 to 1:1 with enhanced antibiofouling property.