Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
638674 | Journal of Membrane Science | 2007 | 7 Pages |
Abstract
Hydrophilic nanofiltration membranes were prepared by grafting hydrophilic copolymers onto surface of ultrafiltration membranes. The method consists of a UV irradiation followed by an in situ graft co-polymerization of water soluble monomers on the membranes made of cardo polyetherketone (PEK-C). The effect of irradiation time and monomer nature on the membrane performance was investigated. Analysis by Fourier transform infrared in attenuated total reflection mode, contact angles and scanning electron microscopy of the membrane surface showed that the grafting degree and their hydrophilicity increase with irradiation time. The co-polymerization of hydrophilic monomers yielded better nanofiltration membranes, i.e. with higher permeation flux. The water flux through a membrane grafted for 10Â min at a 5.2Â mWÂ cmâ2 UV-irradiation power changed from 1.46Â LÂ mâ2Â hâ1 for poly(acrylic acid) to 9.69Â LÂ mâ2Â hâ1 poly(acrylic acid-co-sodium allyl sulfonate) under a driving pressure of 0.2Â MPa, for the sodium sulfate retention of 75%.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Filtration and Separation
Authors
Changquan Qiu, Quang Trong Nguyen, Zhenghua Ping,