Hydrophilic Poly(Vinylidene Fluoride)/Bentonite Hybrid Membranes for Microfiltration of Dyes
Materials Research Express
Volume 6, Issue 10, 20 September 2019, Article number 105376

Polyvinylidene fluoride (PVDF) is widely used as membrane in various filtration processes, but its hydrophobicity often reduces its performance and creates unefficient separation process. One of the alternatives for overcoming this problem is by adding an inorganic material into the polymer. Therefore, the objective of this work is to prepare PVDF/bentonite (BNT) hybrid membranes and to study intensively the effects of BNT on the properties of the resulting hybrid membranes. An exhaustive study covering the surface polymorphism, hydrophilicity, porosity, morphology, topography, mechanical properties and membrane performance toward two types of dyes have been carried out in this work. The ATR-FTIR analysis indicates that the β-phase structure coexists with the α-phase in all the membranes, while the contact angle measurement shows that all hybrid membranes are hydrophilic. The membranes also show high selectivity toward methylene blue and Reactive Yellow 145, indicating that the hybrid membranes can be used for improving the filtration of dyes.
Researcher: Prof. Cynthia Linaya Radiman