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

Dendritic branched molecular modified separation membrane and preparation method thereof, composite separation membrane and application of dendritic branched molecular modified separation membrane and composite separation membrane

A separation membrane and tree-like technology, applied in the field of fluid separation, can solve the problems of regulating separation membranes, which are rarely studied, and achieve the effect of maximizing balance, easy control, and increasing permeation flux.

Active Publication Date: 2019-10-11
CHINA UNIV OF PETROLEUM (EAST CHINA)
View PDF7 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most researchers are committed to constructing a dense membrane on the separation membrane and functionalizing it to improve the performance of the separation membrane, but few people have studied the internal and surface structure of the separation membrane.

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
  • Dendritic branched molecular modified separation membrane and preparation method thereof, composite separation membrane and application of dendritic branched molecular modified separation membrane and composite separation membrane
  • Dendritic branched molecular modified separation membrane and preparation method thereof, composite separation membrane and application of dendritic branched molecular modified separation membrane and composite separation membrane
  • Dendritic branched molecular modified separation membrane and preparation method thereof, composite separation membrane and application of dendritic branched molecular modified separation membrane and composite separation membrane

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0060] According to the second aspect of the present invention, the present invention provides a method for preparing a separation membrane modified by dendritic branched molecules, comprising the following steps: immersing the separation membrane in a solution of dendritic branched molecules, making the dendritic branched molecules A modified membrane is formed on the membrane surface of the separation membrane and / or the pore wall of the inner hole to obtain a dendritic branched molecule modified separation membrane.

[0061] In the present invention, the modified membrane formed on the membrane surface of the separation membrane and / or the hole wall of the inner hole includes the modified membrane formed on the membrane surface of the separation membrane, and the hole wall of the inner hole of the separation membrane. There are three situations in which a modified membrane is formed on the separation membrane and a modified membrane is formed on the membrane surface of the s...

Embodiment 1

[0106] This embodiment provides a polyamide dendrimer modified polyvinylidene fluoride (PVDF) microfiltration membrane, which is prepared according to the following method:

[0107] (1) Preparation of polyvinylidene fluoride casting solution, the formula is as follows, 15wt% PVDF, 1wt% (polyethylene glycol) PEG 400, 0.5wt% (polyvinylpyrrolidone) PVP solution, 83.5wt% (N-methylpyrrolidone ) NMP.

[0108] (2) After defoaming the polyvinylidene fluoride casting solution, it is phase transformed into a polyvinylidene fluoride microfiltration membrane in a coagulation bath, wherein the coagulation bath is composed of water at a temperature of 35°C.

[0109] (3) Immerse the polyvinylidene fluoride microfiltration membrane prepared above in the solution of polysulfonamide dendrimers for 1 hour, remove excess solution, and then immerse in FeCl 3 In the solution for 5min, remove excess solution. Place in deionized water for standby to obtain polysulfonamide dendrimer modified polyvin...

Embodiment 2

[0121] This embodiment provides a polyamide dendrimer modified polytetrafluoroethylene (PTFE) microfiltration membrane, which is prepared according to the following method:

[0122] (1) Configure the polytetrafluoroethylene casting film solution containing polyamide dendrimers, the formula is as follows, 15wt% (polytetrafluoroethylene) PTFE, 0.5wt% PEG400, 1wt% PVP solution, 2wt% polyamide dendrimers Molecule, 81.5 wt% NMP.

[0123] (2) The above-mentioned polytetrafluoroethylene casting film solution containing polyamide dendrimer is degassed, and then undergoes phase transformation into a polytetrafluoroethylene microfiltration membrane in a coagulation bath, wherein the coagulation bath is composed of water at a temperature of 25°C .

[0124] (3) Immerse the polytetrafluoroethylene multi-microfiltration membrane prepared above in the maleic anhydride ether solution for 10 minutes, remove the excess solution, and then place it in 40° C. deionized water for 5 minutes to obta...

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 provides a dendritic branched molecular modified separation membrane and a preparation method thereof, a composite separation membrane and application of the dendritic branched molecularmodified separation membrane and composite separation membrane, and relates to the technical field of fluid separation. The dendritic branched molecular modified separation membrane comprises separation membranes, wherein modified membranes are formed on the membrane surfaces and / or hole walls of inner holes of the separation membranes, and the modified membranes are mainly prepared from dendritic branched molecules. The provided dendritic branched molecular modified separation membrane has the advantages that the modified membranes mainly composed of the dendritic branched molecules are formed on the membrane surfaces and / or hole walls of inner holes of the separation membranes to effectively regulate the surface structures and / or inner structures of the separation membranes, be conductive to maximizing the balance between the permeability and the selectivity, and increase the permeation flux.

Description

technical field [0001] The invention relates to the technical field of fluid separation, in particular to a separation membrane modified by dendritic branched molecules, a preparation method thereof, a composite separation membrane and applications thereof. Background technique [0002] Separation membrane is a membrane-type material with selective permeability. For separation membranes, the mutual restriction and balance (trade-off) between permeability and selectivity is something that researchers have been eager to solve and hope to break through. question. At present, most researchers are committed to constructing dense membranes on separation membranes and functionalizing them to improve the performance of separation membranes, but few people have studied the research on regulating the internal and surface structures of separation membranes. Therefore, how to control the internal and surface structure of the separation membrane to improve the permeability and hydrophob...

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): B01D71/68B01D71/64B01D71/56B01D67/00B01D69/02C02F1/44
CPCB01D71/68B01D71/64B01D71/56B01D67/0006B01D69/02C02F1/444B01D2325/36
Inventor 牛青山远冰冰赵盛超李鹏孙海翔
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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