Electrokinetic Phenomena of Sulfonated-Polyethersulfone Ultrafiltration Membrane Modified by TiO2 Nanoparticles
- Resource Type
- Authors
- Mingliang Luo; Jia Lin Liu; Hong Jian Liu; Zi Long Jia
- Source
- Advanced Materials Research. :639-642
- Subject
- Electrokinetic phenomena
Membrane
Isoelectric point
Chemical engineering
Chemistry
Composite number
General Engineering
Ultrafiltration
Analytical chemistry
Electrolyte
Phase inversion (chemistry)
Streaming current
- Language
- ISSN
- 1662-8985
The sulfonated-polyethersulfone (SPES)/nano-TiO2 composite ultrafiltration (UF) membranes were prepared by phase inversion method with nano-TiO2 as additive. The TiO2 self-assembly on the SPES membrane was confirmed by FT-IR and the isoelectric point’s analysis (IEPs). The electrokinetic phenomena of composite membrane in the different single electrolyte solution were investigated by the streaming potential method. The results showed that the IEP of the SPES-UF membrane modified by nano-TiO2 shifts from 3.5 to 2.9, and the composite membrane shows a stronger electronegativity, which indicates the antifouling performance improvement of the SPES-UF membrane modified by nano-TiO2. The valences of the cations and anions have an important influence on the streaming potential of the composite UF membrane.