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Hollow mesoporous silica bead-polymer hybrid ultrafiltration membrane and preparation method thereof

A technology of mesoporous silica and silica, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problems of limiting membrane permeation flux and improving, and achieve simple operation process and excellent reaction conditions Mild, stable film structure

Inactive Publication Date: 2011-11-23
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the SBA-15 particles are hexagonal mesoporous molecular sieves, and when the amount of particles added exceeds 0.36 wt%, obvious agglomeration occurs, which limits the improvement of the permeation flux of the membrane.

Method used

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  • Hollow mesoporous silica bead-polymer hybrid ultrafiltration membrane and preparation method thereof
  • Hollow mesoporous silica bead-polymer hybrid ultrafiltration membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] First, 0.1 parts by weight of hollow mesoporous silica spheres (the size of the hollow core is about 500 nm, the wall thickness is about 80 nm, and the mesopore diameter is about 2.7 nm) is dispersed in 37 parts by weight of N-methylpyrrolidone (NMP ), then 10 parts by weight of brominated polyphenylene ether was dissolved therein, and then the NMP solution of 2.0 mol / L triethanolamine was added dropwise for quaternization, and the molar ratio of brominated polyphenylene ether repeating unit to triethanolamine was 8:1, after electromagnetic stirring for 30 minutes and ultrasonic for 60 minutes, the prepared casting solution was left to defoam, and then directly coated on a clean glass plate with a glass rod; the glass plate was placed horizontally and immersed in a 30°C Gel bath (water bath) for 2 h, the prepared membrane was washed with a large amount of water to remove the residual solvent in the membrane, and stored in water.

[0021] Under the operating pressure of ...

Embodiment 2-4

[0023] As in Example 1, according to the above method, the hollow mesoporous silica spheres used have a hollow core size of about 500 nm, a wall thickness of about 80 nm, and a mesopore diameter of about 2.7 nm, and 37 In the N-methylpyrrolidone (NMP) of parts by weight, the brominated polyphenylene ether of 10 parts by weight is dissolved wherein again, then the NMP solution of the triethanolamine of 2.0 mol / L is added dropwise to carry out quaternization, brominated polyphenylene The molar ratio of ether repeating unit to triethanolamine is 8:1. After stirring and ultrasonication, it is coated and formed into a film by phase inversion. Under the operating pressure of 0.2 MPa, the pure water flux of the membrane and the rejection rate of 0.5 g / L ovalbumin aqueous solution were tested.

[0024] These several examples are to investigate the influence of different hollow mesoporous silica sphere contents on the prepared hollow mesoporous silica sphere-polymer hybrid ultrafiltrat...

Embodiment 5-7

[0028] As in Example 1, according to the above method, the hollow mesoporous silica spheres used have a hollow core size of about 500 nm, a wall thickness of about 50-120 nm, and a mesoporous diameter of about 2.7 nm. Add 37 In the N-methylpyrrolidone (NMP) of parts by weight, the brominated polyphenylene ether of 10 parts by weight is dissolved wherein again, then the NMP solution of the triethanolamine of 2.0 mol / L is added dropwise to carry out quaternization, brominated polyphenylene The molar ratio of ether repeating unit to triethanolamine is 8:1. After stirring and ultrasonication, it is coated and formed into a film by phase inversion. Under the operating pressure of 0.2 MPa, the pure water flux of the membrane and the rejection rate of 0.5 g / L ovalbumin aqueous solution were tested.

[0029] These several examples are to investigate the influence of different wall thicknesses of hollow mesoporous silica spheres on the prepared hollow mesoporous silica sphere-polymer h...

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Abstract

The invention specifically relates to a hollow mesoporous silica bead-polymer hybrid ultrafiltration membrane and a preparation method thereof, and belongs to the technical field of membranes. The hybrid ultrafiltration membrane is prepared through the following steps: adding hollow mesoporous silica beads into the matrix of brominated polyphenyl ether which has undergone quaternary amination, allowing hydrogen bonding between hydroxy on the surface of the silica beads and the matrix of the polymer and allowing the chains of the polymer to enter into the meso-structure of the silica beads so as to obtain a hybrid membrane with more excellent performance. The hollow mesoporous silica beads in the invention have mesoporous passages and a hollow structure, which enables the flux of the membrane to be enhanced; the hollow mesoporous silica beads have the characteristic that mesoporous aperture, hollow dimension and thickness of wall of holes are regulatable, which enables the performance of the hybrid ultrafiltration membrane to be adjustable by changing the morphology and structure of the silica beads; addition of a small amount of silica beads can optimize the performance of the hybrid ultrafiltration membrane, thereby saving preparation cost.

Description

technical field [0001] The invention belongs to the field of membrane technology, and in particular relates to a hollow mesoporous silica ball-polymer hybrid ultrafiltration membrane and a preparation method thereof. Background technique [0002] In recent years, the research and development of inorganic-organic hybrid membranes has become one of the research hotspots in the membrane field. The characteristic of inorganic-organic hybrid membrane is that it has the advantages of toughness of organic membrane and high temperature resistance and corrosion resistance of inorganic membrane, and can develop comprehensive properties that single membrane material did not have before to meet specific needs, showing good application prospects. The compatibility of inorganic particles and organic matrix has a great influence on the performance of hybrid membranes, which is one of the difficulties in the preparation of inorganic-organic hybrid membranes. As an inorganic material, silic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D69/14B01D71/52B01D67/00
Inventor 吴慧青汤蓓蓓武培怡
Owner FUDAN UNIV
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