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Composite mesoporous film of PETP (polyethylene glycol terephthalate) as well as preparation method and application thereof

A technology of polyethylene terephthalate and ethylene glycol phthalate film, which is applied in the field of film materials, can solve the problems of high cost, poor film flexibility, easy cracking, etc., and achieve good acid and alkali resistance , good flexibility and high cost

Inactive Publication Date: 2013-06-19
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantages of this inorganic composite mesoporous membrane are: the cost of the porous alumina membrane used as a raw material is high, and the membrane has poor flexibility, is brittle, and is extremely resistant to decomposition due to decomposition in a weak acid or weak alkaline environment. Stability, especially after the prepared inorganic composite mesoporous membrane is roasted to remove the surfactant, it is more likely to shrink the mesoporous material in the membrane and the membrane is more brittle and easy to crack. Therefore, the inorganic composite mesoporous membrane is used in practical applications. has great limitations
[0003]The preparation method and application of the applicant's organic-inorganic composite mesoporous membrane (patent application number: 200910054082.1 and 201010152255.1), both use porous polycarbonate membrane as Template preparation of composite mesoporous membranes can solve the problem of brittleness and fragility of inorganic composite mesoporous membranes. However, due to the high cost of porous polycarbonate membranes, especially because porous polycarbonate membranes are easily soluble in some organic solvents, Such as 1,2-dichloroethane, which makes the cost of organic-inorganic composite mesoporous membranes prepared with porous polycarbonate membranes as templates high, and it is difficult to apply in organic solvent environments and liquid / liquid interface electrochemical fields

Method used

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  • Composite mesoporous film of PETP (polyethylene glycol terephthalate) as well as preparation method and application thereof
  • Composite mesoporous film of PETP (polyethylene glycol terephthalate) as well as preparation method and application thereof
  • Composite mesoporous film of PETP (polyethylene glycol terephthalate) as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Preparation of polyethylene terephthalate composite mesoporous membrane assembled with mesoporous materials with a pore diameter of 3.0 nm

[0050] Mix 7.68g of absolute ethanol, 11.57g of tetraethyl orthosilicate and 1ml of hydrochloric acid (2.8mmol / L), stir slowly, condense and reflux for 90min in a water bath at 60°C; then add 15g of absolute ethanol, 1.52 g hexadecyltrimethylammonium bromide (CTAB), 4ml hydrochloric acid (55mmol / L) mixed solution, stirred and reacted at room temperature 25°C for 30min, cooled to room temperature 25°C to obtain a precursor containing CTAB liquid. Using a suction filtration pump (manufactured by Shanghai Mosu Scientific Equipment Co., Ltd., HPD-25 oil-free filtration pump) and a standing suction filtration device in the laboratory (1000ml suction filtration bottle), divide 4ml of the precursor solution (containing CTAB) into two (2ml each time) filter through a polyethylene terephthalate membrane (produced by Shanghai Haoxia Nuclear...

Embodiment 2

[0059] 0.04 mg / ml rhodamine B aqueous solution and 0.04 mg / ml horseradish peroxidase aqueous solution were respectively placed in the molecular transfer device equipped with the polyethylene terephthalate composite mesoporous membrane of the present invention. The photo of molecular transfer of final rhodamine B aqueous solution and 0.04 mg / ml horseradish peroxidase aqueous solution is attached Figure 6 , as shown in 7. from Figure 6 , 7 It can be seen that the red rhodamine dye molecule can pass through the polyethylene terephthalate composite mesoporous membrane from one end to the other end, but the light brown horseradish peroxidase molecule cannot pass through from one end. The polyethylene terephthalate composite mesoporous membrane transmits to the other end.

[0060] Using UV-visible spectrophotometry (Carry100 UV-visible spectrophotometer, Varian Company, USA) to investigate the rhodamine B dye molecules (molecular size3.0nm) in the aqueous solution were assemble...

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Abstract

The invention discloses a polyethylene terephthalate composite mesoporous membrane, a preparation method and application thereof, and belongs to the field of membrane materials. That is, the mesoporous material silica is assembled in the polyethylene terephthalate film to form a composite mesoporous film. The preparation method is to assemble the inorganic mesoporous material in the holes in the polyethylene terephthalate membrane by suction filtration to obtain a composite mesoporous membrane, and then remove the intermediary of the composite membrane by extraction and elution. The surfactant in the porous material is used to obtain a polyethylene terephthalate composite mesoporous membrane. The preparation method of the present invention has the characteristics of simplicity and rapidity. In addition, the polyethylene terephthalate composite mesoporous membrane can be applied not only to size-selective molecular transfer and separation in aqueous solution but also to Size-selective ion transfer at liquid / liquid interfaces, etc.

Description

technical field [0001] The invention relates to a polyethylene terephthalate composite mesoporous membrane, a preparation method thereof and an application of the composite membrane, belonging to the field of membrane materials. Background technique [0002] With the wide application of mesoporous materials in the fields of catalytic chemistry and petrochemical industry, the research of assembling mesoporous materials in porous alumina membranes to form inorganic composite mesoporous membranes has attracted people's attention in recent years. "Self-assembly of a silica–surfactant nanocomposite in a porous alumina membrane" published in the British "Nature Materials" magazine, No. 3, 2004, discloses a method for assembling one-dimensional mesoporous carbon dioxide in porous alumina membranes. A method for preparing inorganic composite mesoporous membranes from silicon rods. However, the disadvantages of this inorganic composite mesoporous membrane are: the cost of the porou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D71/48B01D69/12B01D67/00B01D61/00
Inventor 陈勇吴宏庆许欢
Owner SHANGHAI INST OF TECH
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