N-halamine grafted HNTs (N-halamine@HNTs) were synthesized and used as an antibacterial agent to fabricate blended polyethersulfone (PES) ultrafiltration (UF) membranes via phase inversion method. The as-synthesized N-halamine@HNTs were characterized by Fourier transformed infrared spectroscopy (FTIR) and X-ray photoelectron spectra (XPS). The fabricated N-halamine@HNTs had good antibacterial performance against both gram-positive and gram-negative bacteria. The morphology and performance of the membranes were characterized using water contact angle, scanning electron microscopy (SEM), transmission electron microscopy (TEM), atomic force microscope (AFM), overall porosity and pore size measurements. The hybrid membranes were shown to be more hydrophilic, with a higher pure water flux than the pure PES membrane. SEM images showed that all membranes possessed a typical asymmetric structure. Moreover, the TEM results confirmed the presence of N-halamine@HNTs particles in the PES polymer matrix. The antibacterial test indicated that the hybrid membranes had a good antibacterial performance.

Modification of polyethersulfone ultrafiltration membrane by blending N-halamine grafted halloysite nanotubes and its antibacterial activity

245th National Meeting (2013)

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