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Method for preparing submicron pore diameter polymer porous membrane

A technology of polymer and porous membrane, which is applied in the field of preparing porous polymer membrane by water drop template method, which can solve the problem of difficulty in preparing porous polymer membrane.

Active Publication Date: 2017-02-15
长春艾德斯新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The water droplet template method also has its inherent limitations. Because water droplets tend to fuse and grow during the condensation process, it is difficult to prepare polymer porous membranes with pore sizes below submicron by this method (L.Zhu, L.Wan, J.Jin , Z.Xu, J.Phys.Chem.C.2013, 117, 6185), especially for small holes with a pore size less than 500nm, it is considered to be a challenge for the water droplet template method (V.Vohra, O.Notoya, T.Huang, M. Yamaguchi, H. Murata, Polymer. 2014, 55, 2213)

Method used

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  • Method for preparing submicron pore diameter polymer porous membrane
  • Method for preparing submicron pore diameter polymer porous membrane
  • Method for preparing submicron pore diameter polymer porous membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0038] Example 1-1: K 6 CoW 12 o 40 Preparation of complex with cationic chain transfer reagent BPMA

[0039] Take 0.5g polymetallic oxygen cluster K 6 CoW 12 o 40 Dissolve in 75mL of anhydrous methanol and 75mL of distilled water mixture, the concentration is 3.3mg / mL; take 0.75g cationic chain transfer reagent and dissolve in 75mL of anhydrous methanol and 75mL of distilled water mixture, the solubility is 5.3mg / mL; The number of moles of cationic chain transfer reagent and K 6 CoW 12 o 40 The molar ratio is about 9:1. Under vigorous stirring, the K 6 CoW 12 o 40 The solution of the cationic chain transfer reagent was added dropwise to the solution of the cationic chain transfer reagent. After the dropwise addition was completed, the stirring was continued for 2 h, and the methanol was used for centrifugal washing 5 times to obtain pure K 6 CoW 12 o 40 Complex. The product mass was 0.62 g.

Embodiment 1-2

[0040] Example 1-2: H 4 SiW 12 o 40 Preparation of complexes with cationic chain transfer reagents

[0041] Take 0.5g polymetallic oxygen cluster H 4 SiW 12 o 40 Dissolve in 25mL of anhydrous methanol and 25mL of distilled water mixture, the concentration is 10mg / mL; take 0.45g of cationic chain transfer reagent BPMA dissolved in 25mL of anhydrous methanol and 25mL of distilled water mixture, the concentration is 9mg / mL; The number of moles of transfer reagent and H 4 SiW 12 o 40 The molar ratio is about 5:1; under the condition of vigorous stirring, the H 4 SiW 12 o 40 The solution was added dropwise into the surfactant solution, and after the dropwise addition was completed, the stirring was continued for 0.5 h, and the methanol was centrifugally washed for 3 times to obtain pure H 4 SiW 12 o 40 Complex, the product mass is 0.66g.

Embodiment 1-3

[0042] Examples 1-3: H 3 PW 12 o 40 Preparation of complexes with cationic chain transfer reagents

[0043] Take 0.5g polymetallic oxygen cluster H 3 PW 12 o 40 Dissolve in 25mL of anhydrous methanol and 25mL of distilled water mixture, the concentration is 10mg / mL; take 0.35g of cationic chain transfer reagent and dissolve BPMA in 25mL of anhydrous methanol and 25mL of distilled water, the concentration is 7mg / mL; The number of moles of transfer reagent and H 3 PW 12 o 40 The molar ratio is about 4:1; under the condition of vigorous stirring, the H 3 PW 12 o 40 Add the solution dropwise into the surfactant solution, continue to stir for 0.5h after the dropwise addition is completed, and use methanol to wash 3 times by centrifugation to obtain pure H 3 PW 12 o 40 Complex, the product mass is 0.59g.

[0044] 2. Preparation of star polymer

[0045] Principle: The trithiocarbonate group on the periphery of the polymetallic oxygen cluster complex can be used as a ch...

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Abstract

The invention provides a method for preparing a submicron pore diameter polymer porous membrane, and belongs to the technical field of chemical engineering and materials. At first, through the mutual static electricity effect, cation chain transfer agents containing trithiocarbonate groups are modified onto the surface of multi-metal oxygen clusters to obtain a compound of the cation chain transfer agents and the multi-metal oxygen clusters; further, through a reversible addition-fracture chain transfer polymerization reaction, polystyrene is grafted onto the outer peripheries of the compounds to obtain star-shaped polymers using the multi-metal oxygen clusters as the cores and the polymer as the arms; finally, the star-shaped polymers are used as precursors, and the polymer porous membrane is prepared by a water dripping template method. On the other hand, as a water drip stabilizing agent, the water drips can maintain the small dimension, so that the submicron pore diameter polymer porous membrane can be formed. The polymer porous membrane prepared by the method has application prospects in the fields of separation and soft templates.

Description

technical field [0001] The invention belongs to the technical field of chemical engineering and materials, and in particular relates to a method for preparing a polymer porous membrane by using a water droplet template method with a star-shaped polymer with polymetallic oxygen clusters as the core as a precursor. The pore size of the prepared polymer porous membrane is submicron, some of which can be less than 500 nanometers, and it is expected to be applied in the fields of separation and soft template. Background technique [0002] Polymer porous membranes have important research value and application prospects in the fields of separation membranes, soft templates, sensor devices, photonic crystals, microreactors, and biological interface materials. Usually, the preparation of polymer porous membranes requires the help of templates. In recent years, researchers have proposed a method of using water droplets formed by condensation of water vapor as a template to prepare po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F292/00C08F212/08C08J9/28C08J5/18C08L51/10
CPCC08F212/08C08F292/00C08J5/18C08J9/28C08J2351/10
Inventor 李昊龙张诗林
Owner 长春艾德斯新材料有限公司
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