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Preparation method of novel oxygen-isolating photo-initialized hydrogel compound membrane

A composite membrane and hydrogel technology, applied in the field of membrane science, to achieve the effect of simplifying the membrane-making device and the membrane-making process

Active Publication Date: 2017-07-07
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

By introducing a new membrane-making method, three major problems in the preparation process of hydrogel composite membranes are solved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Preparation of hydrogel composite membrane prepolymer, polyethylene glycol diacrylate: N-isopropylacrylamide = 5:1 molar ratio, adding a mass fraction of 2% photoinitiator Irgacure2959, magnetic stirring until completely dissolved , to obtain the film prepolymer. Wherein, the molecular weight of polyethylene glycol in polyethylene glycol diacrylate is 400.

[0022] Select the base film material and size: the selected area is 10×10cm 2 The PP flat film is the base film.

[0023] Place the cleaned glass plate flat on the desktop, take 2ml of the prepared prepolymer with a dropper, and evenly drop it on the surface of the glass plate.

[0024] Cover the prepolymer with the cut base film, and use the roller to roll back and forth on the surface of the base film, so that the prepolymer between the glass plate and the base film can be spread evenly and smoothly. At this time, the whole formed by the three has reached the barrier. oxygen conditions.

[0025] The glass plat...

Embodiment 2

[0028] Preparation of hydrogel composite film prepolymer, polyethylene glycol (200) diacrylate: N-isopropylacrylamide=10:1 molar ratio, adding mass fraction is 2% photoinitiator Irgacure2959, magnetic stirring Until the dissolution is complete, the coating film prepolymer is obtained. Wherein, the molecular weight of polyethylene glycol in polyethylene glycol diacrylate is 200.

[0029] Select the base film material and size: the selected area is 10×10cm 2 The PP flat film is the base film.

[0030] Place the cleaned glass plate flat on the desktop, take 2ml of the prepared prepolymer with a dropper, and evenly drop it on the surface of the glass plate.

[0031] Cover the prepolymer with the cut base film, and use the roller to roll back and forth on the surface of the base film, so that the prepolymer between the glass plate and the base film can be spread evenly and smoothly. At this time, the whole formed by the three has reached the barrier. oxygen conditions.

[0032]...

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Abstract

The invention discloses a preparation method of a novel oxygen-isolating photo-initialized hydrogel compound membrane and belongs to the field of membrane science and technology. The preparation method comprises the following steps: preparing a coating prepolymer of a compound membrane from polyethylene glycol diacrylate, N-isopropylacrylamide and a photo-initiator; and selecting a base membrane material and dimension and pre-treating the base membrane material. The flexible hydrogel compound membrane with a 3D network structure is prepared by means of the preparation method. The preparation method of the novel oxygen-isolating photo-initialized hydrogel compound membrane disclosed by the invention not only solves the problem of uniformly paving a surface functional layer of the compound membrane, but also provides an oxygen-isolating condition to promote a crosslinking reaction. In addition, the novel membrane making method is controllable in thickness of a compound layer, so that the interfacial soundness of the compound membrane is further increased. Moreover, the compound membrane is simple in preparation method and low in cost, and provides a novel concept to synthesize the compound membrane in the future.

Description

technical field [0001] The invention belongs to the field of membrane science and technology, and relates to a preparation method of a novel oxygen-isolated light-induced hydrogel composite membrane. Background technique [0002] The composite membrane is a separation membrane composed of a microporous membrane or an ultrafiltration membrane as a supporting layer, and a homogeneous membrane with a thickness of only 0.1 to 0.25 microns is covered on its surface as a skin layer. In the field of membrane science, there are many methods for membrane preparation, for example, (1) lamination method, firstly prepare a thin dense homogeneous membrane, and then laminate on the microporous support layer. (2) Dip-coating method, which is formed by dip-coating the polymer solution on the microporous membrane and then drying it. It is also possible to dip-coat the active monomer or prepolymer solution on the microporous membrane and cure it with heat or radiation. (3) Plasma vapor depos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/36B01D71/34B01D71/64B01D71/38B01D71/30B01D71/26B01D71/54B01D71/16B01D71/02B01D69/12B01D67/00
CPCB01D67/0006B01D67/0044B01D69/12B01D71/02B01D71/024B01D71/028B01D71/16B01D71/26B01D71/30B01D71/34B01D71/36B01D71/38B01D71/54B01D71/64
Inventor 姜晓滨贺高红王林李祥村肖武吴雪梅
Owner DALIAN UNIV OF TECH