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

Preparation method for polyether sulfone/graphene oxide composite ultrafiltration membrane

A graphene composite and polyethersulfone technology, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problems of polyethersulfone ultrafiltration membranes, such as easy to be polluted mechanical properties, to improve mechanical strength, The effect of enhanced permeation flux and good hydrophilicity

Inactive Publication Date: 2012-08-01
QINGDAO UNIV
View PDF3 Cites 36 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to modify the polyethersulfone ultrafiltration membrane to prepare a type of polyethersulfone / graphene oxide composite ultrafiltration membrane, aiming to solve the problem that the existing polyethersulfone ultrafiltration membrane is easily polluted during the ultrafiltration process and poor mechanical properties

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
  • Preparation method for polyether sulfone/graphene oxide composite ultrafiltration membrane
  • Preparation method for polyether sulfone/graphene oxide composite ultrafiltration membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Add 0.5g of graphene oxide to 79.5g of dimethylacetamide and ultrasonically disperse for 1h to form a uniform and stable dispersion, then add 18g of polyethersulfone and 2g of polyvinylpyrrolidone to the dispersion. Stir in the bath for 4 hours, then put the solution into a blast drying oven at 60°C and let it stand for 4 hours to defoam to obtain a uniformly mixed casting solution. Pour the casting solution on a glass plate, scrape the membrane with a glass rod with copper wires at both ends, and then immerse it in a coagulation bath of distilled water at room temperature. After the membrane falls off automatically, a polyethersulfone / graphene oxide composite ultrafiltration membrane.

[0034] After testing, the flux recovery rate of the obtained polyethersulfone / graphene oxide composite ultrafiltration membrane is 90%, and the BSA rejection rate remains above 95%.

Embodiment 2

[0036] Add 1.0g of graphene oxide to 79g of dimethylacetamide and ultrasonically disperse for 1h to form a uniform and stable dispersion, then add 18g of polyethersulfone and 2g of polyvinylpyrrolidone to the dispersion, and place in an oil bath at 60°C Stir for 4 hours, and then put the solution into a blast drying oven at 60°C and let it stand for 4 hours to defoam to obtain a uniformly mixed casting solution. Pour the casting solution on a glass plate, scrape the membrane with a glass rod with copper wires at both ends, and then immerse it in a coagulation bath of distilled water at room temperature. After the membrane falls off automatically, a polyethersulfone / graphene oxide composite ultrafiltration membrane.

[0037] After testing, the flux recovery rate of the obtained polyethersulfone / graphene oxide composite ultrafiltration membrane is 94%, and the BSA rejection rate remains above 95%.

Embodiment 3

[0039] Add 2g of graphene oxide to 78g of dimethylacetamide and ultrasonically disperse for 1 hour to form a uniform and stable dispersion, then add 18g of polyethersulfone and 2g of polyvinylpyrrolidone to the dispersion, and place in an oil bath at 60°C Stir for 4 hours, then put the solution into a blast drying oven at 60°C and let it stand still for 4 hours of defoaming to obtain a uniformly mixed casting solution. Pour the casting solution on a glass plate, scrape the membrane with a glass rod with copper wires at both ends, and then immerse it in a coagulation bath of distilled water at room temperature. After the membrane falls off automatically, a polyethersulfone / graphene oxide composite ultrafiltration membrane.

[0040] After testing, the flux recovery rate of the obtained polyethersulfone / graphene oxide composite ultrafiltration membrane is 94.5%, and the BSA rejection rate remains above 95%.

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

No PUM Login to View More

Abstract

The invention discloses a preparation method for a polyether sulfone / graphene oxide composite ultrafiltration membrane. The preparation method comprises the following steps of ultrasonically dispersing the graphene oxide into an organic solvent to form uniform and stable dispersing liquid; adding polyether sulfone and additive into the dispersing liquid; stirring, dissolving, standing and defoaming to form uniform and stable casting membrane liquid; pouring the casting membrane liquid on a glass plate; scraping the membrane; and immersing into coagulating bath at room temperature to obtain the polyether sulfone / graphene oxide composite ultrafiltration membrane after the membrane is removed automatically, wherein the casting membrane liquid comprises the following components as per mass percentage concentration: 15 to 21 percent of polyether sulfone, 1 to 2 percent of pore-forming agent and 0.5 to 4.0 percent of graphene oxide. The polyether sulfone / graphene oxide composite ultrafiltration membrane has high hydrophilcity, high porosity, static resistance, elasticity and the like and improves the flux of pure water, retention rate, pollution resistance, mechanical property and the like.

Description

technical field [0001] The invention relates to a modification method of a polyethersulfone ultrafiltration membrane, in particular to a preparation method of a polyethersulfone / graphene oxide composite ultrafiltration membrane. Background technique [0002] There are many materials for making ultrafiltration membranes, and the early ultrafiltration membranes were made of cellulose acetate. This material is low in price and has good film-forming properties, and it still has important uses today. Non-cellulose acetate ultrafiltration membrane materials include polysulfone, polyethersulfone, polyacrylonitrile, polycarbonate, aromatic polyamide, polyimide, polytetrafluoroethylene, polyvinylidene fluoride, and polymer electrolyte complexes, etc. . [0003] Polyethersulfone ultrafiltration membrane has properties such as high temperature resistance, aging resistance, creep resistance, dimensional stability, and chemical resistance. However, due to its strong hydrophobicity, it ...

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
IPC IPC(8): B01D71/68B01D67/00
Inventor 王宗花赵凯迟德玲夏建飞张菲菲李峰于海容
Owner QINGDAO UNIV
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