1 Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China 2 Institute for Advanced Ocean Study, Ocean University of China, Qingdao 266100, China
Abstract: The antibacterial ultrafiltration membranes were prepared via “MWA (microwave-assisted)-in situ polymerization-blending” method, using capsaicin derivatives as antibacterial additives, PSf/PES as membrane materials, polyethylene glycol 400 (PEG-400) as pore-forming agent and N, N-dimethyl acetamide (DMAc) as solvent. And the effects of functionality of different capsaicin derivatives on the structure and properties of the modified membranes were investigated. The results showed that the performance of the membranes modified with different capsaicin derivatives improved obviously. In addition, the mechanical properties of modified ultrafiltration membrane gradually strengthened with the functionality of capsaicin derivatives increased. However, the microstructure, permeability and separation performance had no apparent change as the change of the functionality. All the modified composite membrane had good antibacterial properties, up to 89.5%.
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