Patent name: Composite Ultrafiltration Membrane of Modified Chitosan Composite Electrospinning Nanofiber and Its Preparation Method
Patent No.: CN201110309966.X
Applicant: Institute of Chemistry Chinese Academy of Sciences
Abstract: The present invention relates to a composite ultrafiltration membrane of modified chitosan composite electrospinning nanofibers. The structure of the composite ultrafiltration membrane is a membrane layer composed of polymer electrospinning nanofibers having excellent chemical resistance and aging resistance prepared by an electrospinning method on a nonwoven fabric support layer substrate. On the surface of the film layer, an ultra-low hydrophilic chitosan layer coated on the surface of the film layer composed of the polymer electrospinning nanofibers is treated with an aldehyde and an acid chloride modifier. The ultra-thin separation layer of modified chitosan with high water permeability and stable chemical properties formed after the modification. The multi-layer composite ultrafiltration membrane of the invention has the characteristics of high water flux, high retention efficiency, low pollution, acid and alkali resistance and the like. The filter membrane can be used for the production of domestic water, drinking water and special conditions water, and is suitable for medicine, bioengineering, food, environmental protection, etc.
Source: Patent Portfolio