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

Hydrophilic polyethersulfone with cardo alloy ultrafiltration membrane and preparation method thereof

A phenolphthalein-based polyarylene ether, ultrafiltration membrane technology, applied in ultrafiltration, chemical instruments and methods, membrane technology and other directions, can solve the problems of insufficient long-term stability of hydrophilicity, poor temperature resistance, etc. The effect of improving water resistance and anti-pollution ability, increasing hydrophilicity, and reducing operating costs

Active Publication Date: 2012-06-27
TIANBANG NAT ENG RES CENT OF MEMBRANE TECH
View PDF5 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to provide a new type of hydrophilic phenolphthalein-based polyarylethersulfone alloy ultrafiltration membrane and its preparation method for the problems of poor temperature resistance and insufficient long-term stability of hydrophilicity in existing membrane materials

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
  • Hydrophilic polyethersulfone with cardo alloy ultrafiltration membrane and preparation method thereof
  • Hydrophilic polyethersulfone with cardo alloy ultrafiltration membrane and preparation method thereof
  • Hydrophilic polyethersulfone with cardo alloy ultrafiltration membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] 20 grams of phenolphthalein-based polyarylethersulfone PES-C, 3 grams of polyvinylpyrrolidone PVP (K90), were added to 95 grams of N-methylpyrrolidone, 2 grams of pure water and 1 gram of oxalic acid mixed solvent, stirred at 60 ° C for 24 Hours, a homogeneous blended polymer casting solution was formed. Thereafter, the casting solution was filtered through a stainless steel filter and placed in a material tank at a temperature of 60° C. for vacuum degassing. After the air bubbles are completely removed, use a glass scraper with a thickness of 200 microns to coat the casting solution on a glass plate, stay in the air for about 5 seconds, and then immerse in 40°C deionized water for phase separation and solidification to form a nascent super filter membrane. Thereafter, the membrane was soaked in deionized water at 25°C for 48 hours to set the shape, and was washed to remove residual solvents and additives. The cleaned membrane material is soaked in a hydrogen peroxide...

Embodiment 2

[0064] 20 grams of phenolphthalein-based polyarylethersulfone PES-C, 8 grams of polyvinylpyrrolidone PVP (K90), were added to 95 grams of dimethyl sulfoxide and 3 grams of polyethylene glycol (600) mixed solvent, stirred at 80 ° C for 36 Hours, a homogeneous blended polymer casting solution was formed. Thereafter, the casting solution was filtered through a stainless steel filter and placed in a material tank with a temperature of 80° C. for vacuum degassing. After the air bubbles are completely removed, use a stainless steel spatula with a thickness of 300 microns to coat the casting solution on a glass plate, stay in the air for about 10 seconds, and then immerse in 40°C deionized water for phase separation and solidification to form a nascent super filter membrane. Thereafter, the membrane was soaked in deionized water at 30°C for 24 hours to finalize the shape, and washed to remove residual solvents and additives. The cleaned membrane material was soaked in a sodium pers...

Embodiment 3

[0066] 16 grams of phenolphthalein-based polyarylethersulfone PES-C, 5 grams of polyvinylpyrrolidone PVP (K85), respectively added to 65 grams of N,N-dimethylformamide and 4 grams of polyethylene glycol (400) mixed solvent, in Stir at 80°C for 12 hours to form a homogeneous blended polymer casting solution. Thereafter, the casting solution was filtered through a stainless steel filter and placed in a material tank with a temperature of 80° C. for standing defoaming. After the air bubbles are completely removed, use a stainless steel scraper with a thickness of 250 microns to coat the casting solution on a glass plate, stay in the air for about 5 seconds, and then immerse in 40°C deionized water for phase separation and solidification to form a nascent super filter membrane. Thereafter, the membrane was soaked in deionized water at 25°C for 48 hours to set the shape, and was washed to remove residual solvents and additives. The cleaned membrane material is soaked in a potassi...

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
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a novel hydrophilic polyethersulfone with cardo alloy ultrafiltration membrane and a preparation method thereof. According to the invention, hydrophilic polyethersulfone with cardo (PES-C) and hydrophilic polyvinylpyrrolidone (PVP) with a high molecular weight are blended, and a flat or hollow fiber ultrafiltration membrane is prepared by using an immersion-precipitation process or a dry / wet phase inversion process; and then the PES-C / PVP alloy ultrafiltration membrane with permanent hydrophilicity is prepared through hydrophilic long-lasting aftertreatment. The preparation method provided in the invention is simple, convenient, highly efficient and economy and is favorable for realization of industrial application. The prepared ultrafiltration membrane has good high temperature resistance, chemical solvent resistance, acidic and alkaline corrosion resistance and osmotic separation performance and excellent anti-pollution ability and can be used in the fields of purification of water quality, treatment of industrial waste water, recycling of domestic sewage, purification and separation of biological medicine products, etc.

Description

technical field [0001] The invention relates to the field of ultrafiltration membrane separation, in particular to a phenolphthalein-based polyarylethersulfone alloy ultrafiltration membrane with permanent hydrophilicity and a preparation method thereof. Background technique [0002] my country is a country with severe shortage of fresh water resources and serious water pollution. Therefore, how to effectively control the environment and fully develop and utilize water resources is a major issue related to the national economy and people's livelihood. In the context of the current water resources crisis, membrane separation technology has been widely used in the fields of seawater desalination, industrial wastewater treatment and municipal sewage treatment and other water resources reuse due to its high efficiency, energy saving and environmental protection. However, at this stage, the fouling problem during the use of membranes is still the biggest bottleneck restricting th...

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 Applications(China)
IPC IPC(8): B01D71/68B01D61/14B01D67/00C02F1/44
Inventor 葛洁杨凤林尹中升俞锋徐俊峰
Owner TIANBANG NAT ENG RES CENT OF MEMBRANE TECH
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