Preparation and performance optimization of PVDF anti-fouling membrane modified by chitin
-
Manman Xie
,
Li Chen
Abstract
The poly(vinylidene fluoride) (PVDF)/chitin (CH) blend membranes were prepared by the immersion phase inversion method using N,N-dimethylacetamide (DMAc)/lithium chloride (LiCl) as the co-solvent. It was found that blending CH with PVDF allowed membranes to have a better hydrophilicity, penetrability, antifouling and antibacterial performance. In order to improve the performance of PVDF/CH blend membranes further, water/ethanoic acid (HAc) solutions with different compositions were employed as coagulation baths. The effects of HAc volume percentage in coagulation baths on the surface composition, morphology, wettability, water flux, antifouling and antibacterial property of PVDF/CH membrane were investigated. The results indicated that the content of CH on the surface of the membrane increased with the increase of HAc concentration in coagulation baths, which contributed to an improvement of hydrophilicity. The increasing HAc content in coagulation baths also led to a change from finger-like pores to sponge-like pores and a decrease of porosity for PVDF/CH blend membranes. When increasing HAc concentration, the antifouling performance of the blend membranes was improved. Meanwhile, the amidogen of CH on PVDF/CH membrane surfaces could suppress the growth of bacteria, and the blend membrane showed an improved antibacterial performance with the volume ratio of HAc increasing.
Funding source: National Natural Science Foundation of China
Award Identifier / Grant number: 21374078
Award Identifier / Grant number: 51303729
Funding statement: The authors would like to acknowledge the financial support from the National Natural Science Foundation of China (21374078 and 51303729), the Specialized Research Fund for the Doctoral Program of higher Education of China (20121201120005 and 20121201110003), the Program for Changjiang Scholars and Innovative Research Team in University of Ministry of Education of China (IRT13084) and Natural Science Foundation of Tianjin (14JCTPJC00522 and 14JCZDJC38300).
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©2018 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Original articles
- Mechanical and rheological properties of polystyrene-block-polybutadiene-block-polystyrene copolymer reinforced with carbon nanotubes: effect of processing conditions
- Effects of surface modification of halloysite nanotubes on the morphology and the thermal and rheological properties of polypropylene/halloysite composites
- Influence of the polyacrylonitrile proportion on the fabricated UF blend membranes’ performance for humic acid removal
- Effects of partial replacement of carbon black with nanocrystalline cellulose on properties of natural rubber nanocomposites
- Conductive mechanism of carbon black/polyimide composite films
- Effects of fiber-surface modification on the properties of bamboo flour/polypropylene composites and their interfacial compatibility
- Highly electrically conducting poly(L-lactic acid)/graphite composites prepared via in situ expansion and subsequent reduction of graphite
- Preparation and performance optimization of PVDF anti-fouling membrane modified by chitin
- Fabrication of bilayer resin-bonded fixed abrasive wires using the pultrusion process
- Guidelines for balancing the flow in extrusion dies: the influence of the material rheology
Artikel in diesem Heft
- Frontmatter
- Original articles
- Mechanical and rheological properties of polystyrene-block-polybutadiene-block-polystyrene copolymer reinforced with carbon nanotubes: effect of processing conditions
- Effects of surface modification of halloysite nanotubes on the morphology and the thermal and rheological properties of polypropylene/halloysite composites
- Influence of the polyacrylonitrile proportion on the fabricated UF blend membranes’ performance for humic acid removal
- Effects of partial replacement of carbon black with nanocrystalline cellulose on properties of natural rubber nanocomposites
- Conductive mechanism of carbon black/polyimide composite films
- Effects of fiber-surface modification on the properties of bamboo flour/polypropylene composites and their interfacial compatibility
- Highly electrically conducting poly(L-lactic acid)/graphite composites prepared via in situ expansion and subsequent reduction of graphite
- Preparation and performance optimization of PVDF anti-fouling membrane modified by chitin
- Fabrication of bilayer resin-bonded fixed abrasive wires using the pultrusion process
- Guidelines for balancing the flow in extrusion dies: the influence of the material rheology
