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An Improved Method for the Preparation of Type I Collagen From Skin
Published on: January 21, 2014
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Collagen Fibril-Assembled Skin-Simulated Membrane for Continuous Molecular Separation
Jian Li1, Pei Xiao1, Yilin Xu2
1Laboratory of Environmental Biotechnology, Jiangsu Engineering Laboratory for Biomass Energy and Carbon Reduction Technology, Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China.
ACS Applied Materials & Interfaces
|January 13, 2022
Summary
Researchers developed a skin-like membrane using biomaterials and interfacial polymerization. This novel bionic membrane demonstrates excellent dye rejection and high water permeability for advanced filtration applications.
Area of Science:
- Materials Science
- Biomaterials Engineering
- Separation Technology
Background:
- Traditional membranes often struggle with selectivity and fouling.
- Developing biomimetic materials offers new avenues for advanced separation.
- Skin's unique structure inspires novel membrane designs.
Purpose of the Study:
- To fabricate a skin-simulated thin-film-composite membrane.
- To investigate the effect of collagen fibril loading on membrane properties.
- To evaluate the membrane's performance in dye rejection and salt permeation.
Main Methods:
- Vacuum-assisted interfacial polymerization.
- Cross-linking of polyacrylonitrile (PAN) substrate with trimesoyl chloride.
- Surface modification with varying amounts of collagen fibrils.
Main Results:
- A three-layer skin-like membrane structure was successfully created.
- Optimal membrane (0.5 mg collagen) showed 130 nm selective layer thickness and 84.7 LMH bar⁻¹ water permeability.
- High dye rejections (98.6-99.8%) and good salt permeation (Na2SO4, NaCl) were achieved.
Conclusions:
- Facile strategy for constructing bionic membranes using biomaterials.
- Demonstrated potential for advanced filtration and water treatment.
- Collagen fibril integration offers tunable membrane characteristics.
