Abstract
ABSTRACTTo evaluate the effect of nanoparticle size on the structure and performance of the membranes, polyvinylidene fluoride composite membranes modified by nano-ZnO with different particle size were successfully fabricated by the non-solvent induced phase inversion method. A series of tests, including contact angle measurement, porosity and pore size measurement, scanning electron microscope, atomic force microscopy, differential scanning calorimeter and filtration experiments were performed to characterise the composite membranes. The results showed that the size of nano-ZnO particle has an influence on the structure and performance of the composite membranes. The membrane with 90 nm nano-ZnO particle has abundant porosity, high hydrophilicity and low surface roughness. These features are responsible for its excellent permeability and antifouling property.
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