![]() ![]() ![]() The separation performances for bovine serum albumin (BSA), lignin and tannic acid (TA) of prepared membranes were evaluated. The resultant membranes exhibited triple layered sandwich structure, with a dense interlayer in the middle between a long finger like asymmetrical structure in its inner layer and a thinner finger like structure underneath the selective layer on the outer layer of membrane. Bore fluid flow rate (BFFR), outer layer dope solution flow rate (OLFR), air gap (AG) and nanofiller loading during the DLHF spinning were optimized through experimental approach. As-synthesized TNT-B served as a promising nanofiller to improve the hydrophilicity, flux and rejection of DLHFM. In this study, polyvinylidene fluoride (PVDF) DLHFM incorporated with titania nanotube-boron (TNT-B) in the outer layer was developed via dry/wet spinning using a triple orifice spinneret. The optimization of key spinning parameters is crucial to attain the desired membrane properties to suit its application. Dual layer hollow fiber membrane (DLHFM) offers the flexibility to independently tailor the outer and inner surface of hollow fiber membrane in a single step. ![]()
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