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Sulfonated poly(ether ether ketone)-sulfonated silicon dioxide microsphere hybrid membrane, as well as preparation and application of membrane

A technology of sulfonated polyether ether ketone and sulfonated silica, which is applied in the field of sulfonated polyetheretherketone-sulfonated silica microsphere hybrid membrane and its preparation and application, can solve the problem of gas separation and has not been reported in the literature and other problems, to achieve excellent gas separation performance, increased strength, and the effect of simple and controllable preparation process

Inactive Publication Date: 2014-12-17
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there has been no literature report on the use of sulfonated polyether ether ketone / sulfonated silica microsphere hybrid membranes for gas separation

Method used

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  • Sulfonated poly(ether ether ketone)-sulfonated silicon dioxide microsphere hybrid membrane, as well as preparation and application of membrane
  • Sulfonated poly(ether ether ketone)-sulfonated silicon dioxide microsphere hybrid membrane, as well as preparation and application of membrane
  • Sulfonated poly(ether ether ketone)-sulfonated silicon dioxide microsphere hybrid membrane, as well as preparation and application of membrane

Examples

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Effect test

Embodiment 1

[0034] Example 1: Preparation of a sulfonated polyether ether ketone-sulfonated silica microsphere hybrid membrane with a thickness of about 60 μm

[0035] (1) Preparation of sulfonated silica microspheres

[0036] first use Methods Synthesis of silica spheres with a diameter of about 300nm: Disperse 12mL of TEOS and 20mL of ammonia water with a mass fraction of 25% in 200mL of absolute ethanol, and stir at room temperature for 24h. Then 1.0 mL of 3-(trimethoxysilyl)propyl-2-methyl-2-acrylate was added to the above solution, and stirring was continued at room temperature for 24 h. Centrifuge, wash with water three times and ethanol once, and dry to obtain double bond-modified silica microspheres.

[0037] Sulfonated silica microspheres were prepared by precipitation co-distillation method, and the specific process was as follows: 0.30 g of the double bond-modified silica microspheres obtained above, 0.40 g of sodium styrene sulfonate, 0.40 mL of styrene and 2,2 - Disperse ...

Embodiment 2

[0045] Example 2: Preparation of a sulfonated polyether ether ketone-sulfonated silica microsphere hybrid membrane with a thickness of about 65 μm

[0046] Weigh 0.6 g of sulfonated polyether ether ketone and 6 g of N,N-dimethylacetamide with a sulfonation degree of 65%, and stir at room temperature for 12 hours under magnetic stirring at 500 r / min to dissolve all the polymers to obtain sulfonated polyether ether ketone solution. Add 0.06 g of the aminated silica microspheres prepared in Example 1, add 4 g of DMAc, ultrasonicate for 24 h, add to the above sulfonated polyether ether ketone solution, stop stirring after 12 h, filter with a copper mesh, and let stand for 2 h to remove Soak the sulfonated polyether ether ketone-sulfonated silicon micro-casting solution, pour the casting solution into a clean glass Petri dish (Φ100mm), place it in an oven, and dry it at 60°C and 80°C for 12 hours respectively , to obtain a homogeneous sulfonated polyether ether ketone-sulfonated s...

Embodiment 3

[0051] Example 3: Preparation of a sulfonated polyether ether ketone-sulfonated silica microsphere hybrid membrane with a thickness of about 70 μm

[0052] Weigh 0.6 g of sulfonated polyether ether ketone and 6 g of N,N-dimethylacetamide with a sulfonation degree of 65%, and stir at room temperature for 12 h under magnetic stirring at 500 r / min to dissolve the polymer completely. Add 0.09 g of the aminated silica microspheres prepared in Example 1, add 4 g of DMAc, ultrasonicate for 24 h, add to the above sulfonated polyether ether ketone solution, stop stirring after 12 h, filter with a copper mesh, and let stand for 2 h to remove Soak the sulfonated polyether ether ketone-sulfonated silicon micro-casting solution, pour the casting solution into a clean glass Petri dish (Φ100mm), place it in an oven, and dry it at 60°C and 80°C for 12 hours respectively , to obtain a homogeneous sulfonated polyether ether ketone-sulfonated silica microsphere hybrid membrane with a thickness o...

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Abstract

The invention discloses a sulfonated poly(ether ether ketone)-sulfonated silicon dioxide microsphere hybrid membrane which consists of sulfonated poly(ether ether ketone)-sulfonated silicon dioxide microspheres. The preparation process comprises the following steps of performing reaction on silicon dioxide microspheres synthesized by a Stober method and 3-(methacryloyl) trimethoxypropylsilane to obtain double-key modified silicon dioxide microspheres; then preparing sulfonated silicon dioxide microspheres from the double-key modified silicon dioxide microspheres and vinyl benzene sulfonic acid sodium salt under the action of an initiator; co-blending the sulfonated silicon dioxide microspheres and a sulfonated poly(ether ether ketone) solution to obtain membrane casting liquid; and preparing the hybrid membrane by a casting method. The sulfonated poly(ether ether ketone)-sulfonated silicon dioxide microsphere hybrid membrane has the advantages that the raw materials are readily available; the preparation process is simple and controllable; the prepared sulfonated poly(ether ether ketone)-sulfonated silicon dioxide microsphere hybrid membrane applied to CO2 / CH4 gas separation is relatively high in selectivity and permeability.

Description

technical field [0001] The invention relates to a sulfonated polyether ether ketone-sulfonated silicon dioxide microsphere hybrid membrane and its preparation and application, belonging to the technical field of membrane separation. Background technique [0002] Organic-inorganic composite membranes have the characteristics of both organic and inorganic components, and have good separation characteristics and physical and chemical stability, and have become a research hotspot in recent years. Compared with polymer membranes, the addition of inorganic particles can improve the separation performance of hybrid membranes, but the compatibility between inorganic particles and polymer materials needs to be improved. How to enhance the force between the inorganic particles and the polymer interface, the most important method is to modify the surface of the inorganic particles with various modifiers to improve the force between the inorganic particles and the polymer matrix. Funct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D67/00B01D71/66B01D53/22
CPCY02C20/40
Inventor 吴洪辛清萍姜忠义李曌李丛荻石玥
Owner TIANJIN UNIV
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