Synthesis and Characterization of Poly(methyl methacrylate)/SiO 2 Hybrid Membranes: Effect of Silica Contents on Membrane Structure
Abstract: Hybrid
organic-inorganic based on poly(methyl methacrylate)/SiO 2 (PMMA/silica)
membranes were prepared using sol-gel technique under acidic conditions with
different tetraethoxy orthosilane (TEOS) concentration. The thin membrane films
were characterized using water permeability, water uptake, size porosity,
Fourier Transform Infra Red (FTIR) and SEM analysis. Dispersion of particles in
the nano scale was only possible with addition of TEOS above 10%.
Organic-inorganic solutions with compositions varying from 100 PMMA/ TEOS 0 to
75 PMMA/25 TEOS were used to cast the asymmetric membranes. Water permeability,
water up take and porosity size increase as TEOS content increases. SEM
analysis showed that the membrane morphology changed from co-continuous phase
to nodule structure if 10% TEOS was added, then return to co-continuous phase
again when above 15% of TEOS was added.
Penulis: Muhammad Ali Zulfikar
and Abdul Wahab Mohammad
Journal Code: jpkimiagg060005
