Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of preparation method of mofs-chitosan nanofiber composite film

A chitosan nano-fiber composite technology, which is applied in the field of preparation of MOFs-chitosan nanofiber composite film, can solve the problems of easy falling off of MOFs, poor dispersion of MOFs, poor binding fastness of MOFs and chitosan, etc., to achieve High MOFs retention rate, excellent water resistance and solvent resistance, simple and easy preparation method

Active Publication Date: 2021-06-08
QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the MOFs-chitosan materials prepared by blending have the disadvantages of poor binding fastness between MOFs and chitosan, easy falling off of MOFs, and poor dispersion of MOFs in chitosan solution. At the same time, there is no chitosan material at this stage A report on the blending of nanofibers and MOFs

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of preparation method of mofs-chitosan nanofiber composite film
  • A kind of preparation method of mofs-chitosan nanofiber composite film
  • A kind of preparation method of mofs-chitosan nanofiber composite film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Preparation of ZIF-8-Chitosan Nanofiber Composite Film

[0034] 1) Preparation of chitosan nanofibers: chitosan and polyethylene oxide were slowly added to glacial acetic acid as a total solution, wherein the final concentration (mass concentration) of glacial acetic acid in the total solution was 3%, and chitosan accounted for 1% of the total solution mass, polyethylene oxide accounts for 0.5% of the total solution mass, turn on the magnetic stirrer, the rotating speed is 500r / min, and the solid is completely dissolved after stirring for 30min; A 5mL syringe was used to extract the solution for electrospinning, and tin foil was used as the receiving plate. The spinning conditions were: positive pressure of 2.0KV, negative pressure of -5.0KV, bolus injection speed of 0.02mm / min, translation speed of 100mm / min, The rotating speed of the receiving drum is 5r / min; after the spinning is finished, the tin foil is removed, cut into small pieces of 2cm×2cm, and the chitosan fi...

Embodiment 2

[0041] Preparation of ZIF-67-Chitosan Nanofiber Composite Film

[0042] 1) Preparation of chitosan nanofibers: chitosan and polyethylene oxide were slowly added to glacial acetic acid as a total solution, wherein the final concentration (mass concentration) of glacial acetic acid in the total solution was 5%, and chitosan accounted for 3% of the total solution mass, polyethylene oxide accounts for 1% of the total solution mass, turn on the magnetic stirrer, the rotating speed is 500r / min, and the solid is completely dissolved after stirring for 30min; A 5mL syringe was used to extract the solution for electrospinning, and tin foil was used as the receiving plate. The spinning conditions were: positive pressure of 13KV, negative pressure of -10.0KV, bolus injection speed of 0.02mm / min, translation speed of 500mm / min, receiving The rotation speed of the drum is 30r / min; after the spinning is finished, the tin foil is removed, cut into small pieces of 2cm×2cm, and the chitosan fi...

Embodiment 3

[0051] Preparation of MIL-101(Cr)-Chitosan Nanofiber Composite Film

[0052] 1) Preparation of chitosan nanofibers: chitosan and polyethylene oxide are slowly added to glacial acetic acid respectively as a total solution, wherein the final concentration (mass concentration) of glacial acetic acid in the total solution is 4%, and chitosan accounts for the total 2% of the solution mass, polyethylene oxide accounts for 0.1% of the total solution mass, turn on the magnetic stirrer, the rotation speed is 500r / min, and the solid is completely dissolved after stirring for 30min; The solution was extracted by the syringe of the 10000-0000000, and electrospinned, and the tin foil was used as the receiving plate. The spinning conditions were: positive pressure of 5.0KV, negative pressure of -6.0KV, bolus injection speed of 0.05mm / min, translation speed of 300mm / min, receiving The rotating speed of the drum is 20r / min; after spinning, take off the tin foil, cut it into small pieces of 2c...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
strengthaaaaaaaaaa
strengthaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of polymer material preparation, in particular to a preparation method of MOFs-chitosan nanofiber composite membrane. Chitosan nanofibers were prepared by electrospinning, and then the synthesized MOFs material and chitosan nanofibers were blended and compounded under the action of a crosslinking agent to obtain MOFs-chitosan nanofiber composite membranes. The invention effectively solves the problems of low strength and poor stability of the MOFs-chitosan nanofiber composite film and the poor dispersibility of MOFs materials in chitosan fibers, etc., and prepares a MOFs with high retention rate, high strength and excellent water resistance and Solvent-resistant MOFs‑chitosan nanofiber composite membrane. At the same time, the preparation method is simple and easy, the preparation conditions are mild, and it is suitable for large-scale production. It is expected to expand the application of the composite membrane in the fields of dye adsorption, metal ion adsorption, gas adsorption and storage, etc.

Description

technical field [0001] The invention belongs to the technical field of polymer material preparation, in particular to a preparation method of a MOFs-chitosan nanofiber composite film. Background technique [0002] Chitosan is a natural cationic polymer widely existing in nature. It has the advantages of cheap, non-toxic, biodegradable, and good film-forming properties. It is the second largest renewable resource in the world after cellulose. Chitosan fiber is usually a fiber made by wet spinning after deacetylating chitin by concentrated alkali treatment. It is used in absorbable medical sutures, hemostatic cotton, artificial dialysis membranes, artificial skin, tissue scaffold materials and dressings. It has a wide range of applications in the medical and health fields. [0003] Metal-organic frameworks (MOFs) are coordination polymers composed of polydentate organic ligands containing oxygen and nitrogen (mostly aromatic polyacids and polybases) and transition metal ions....

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/18C08J3/24C08L5/08C08L87/00
CPCC08J3/246C08J5/18C08J2305/08C08J2487/00
Inventor 吴美燕李滨刘超于光冯晓燕张跃冬咸漠
Owner QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com