This investigation indicates the ability to selectively graft glycidyl methacrylate (GMA) only from the external surface of regenerated cellulose (RC) ultrafiltration (UF) membranes using activator generated electron transfer (AGET) atom transfer radical polymerization (ATRP). This controlled polymerization resulted in epoxy functionalized polymer brush ends. Further reaction of the terminal ep...

The impact of humic acid fouling on the membrane transport of two pharmaceutically active compounds (PhACs) - namely carbamazepine and sulfamethoxazole - in forward osmosis (FO) was investigated. Deposition of humic acid onto the membrane surface was promoted by the complexation with calcium ions in the feed solution and the increase in ionic strength at the membrane surface due to the reverse ...

In this study, the effects of graphene oxide (GO) nanosheets on physicochemical properties and performances cellulose acetate butyrate (CAB) membranes were investigated. Nanocomposite fabricated using CAB a small amount GO in range 0 to 0.07 wt.%, conventional phase-inversion method. Membranes characterized by different methods their tested dead-end filtration system. Compared with pristine mem...

The desalination technology of choice today is reverse osmosis (RO). In this process saline water is forced using mechanical pressure across a membrane that can selectively pass water and reject almost all ions and most neutral molecules. Reverse osmosis proved to be robust and most energy efficient technology that can be exploited for a wide range of water sources. Nevertheless water desalinat...

A series of pentiptycene-containing disulfonated polysulfone copolymers (PENT-BP) were synthesized via condensation polymerization. Water and salt transport properties (solubility, diffusivity permeability) characterized for acid-form membranes (PENT-BP(H)) compared with triptycene-based sulfonated polysulfones (TRP-BP(H)) a non-iptycene-containing 4,4′-biphenol-based (BPS(H)) to investigate th...

Abstract Research has been carried out on hydrophobic membranes based polyethersulfone (PES) polymers using Mg(OH) 2 additives. PES are made by blending additive because structurally bound OH groups play an important role. In addition, is also cheap and easy to obtain non-toxic. This study aims improve the performance of membranes, studying effect adding additives into membrane system which was...

Abstract. An ambichiral structure comprising sheets of an anisotropic dielectric material rejects normally incident plane waves of one circular polarization (CP) state but not of the other CP state, in its fundamental Bragg regime. However, if the same structure is made of an dielectric–magnetic material with indefinite permittivity and permeability dyadics, it may function as a polarization–un...