1 research outputs found
Improvement of Antifouling Properties of Polyvinylidene Fluoride Hollow Fiber Membranes by Simple Dip Coating of Phosphorylcholine Copolymer via Hydrophobic Interactions
We
present a simple surface modification method for improving the
antifouling properties of polyvinylidene fluoride (PVDF) hollow fiber
membranes for water treatment. Membranes were dip coated in a block
copolymer of 2-methacryloyloxyethyl phosphorylcholine (MPC) and butyl
methacrylate (BMA) (poly(MPC-co-BMA)) aqueous solution. Membranes
coated with poly(MPC-co-BMA) at various coating concentrations exhibited
higher antifouling properties than bare and MPC homopolymer-coated
membranes, while showing higher water permeabilities after fouling.
Fluorescence observation revealed the effect of coating concentration
on poly(MPC-co-BMA) distribution within the hollow fiber membranes.
The results of quartz crystal microbalance measurements showed that
almost no bovine serum albumin was adsorbed onto the poly(MPC-co-BMA)
coating, whereas it was highly adsorbed onto bare and MPC homopolymer
coatings. We quantified the amount of poly(MPC-co-BMA) on the membrane
before and after cleaning, using fluorescence microscopy. The poly(MPC-co-BMA)
coating layer used in the hydrophobic interaction between BMA moieties
and the PVDF membrane surface was quite stable