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Ionic liquid-functionalized snowman-shaped anisotropic composite material and preparation method and application thereof

An ionic liquid, anisotropic technology, used in chemical instruments and methods, transportation and packaging, chemical/physical processes, etc., to solve problems such as unpleasant Pickering emulsions

Active Publication Date: 2016-05-04
LIAONING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional Pickering particles usually use materials with a three-phase contact angle of 90 degrees, that is, extremely hydrophilic or extremely hydrophobic materials are not suitable for the preparation of Pickering emulsions

Method used

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  • Ionic liquid-functionalized snowman-shaped anisotropic composite material and preparation method and application thereof
  • Ionic liquid-functionalized snowman-shaped anisotropic composite material and preparation method and application thereof
  • Ionic liquid-functionalized snowman-shaped anisotropic composite material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Example 1Cl - Functionalized Janus snowman-shaped composite particles based on ionic liquid

[0041] (1) The preparation method is as follows

[0042] 1) Polystyrene hollow ball: purchased from Rohm&Haas Company, the product code is HP-433.

[0043] 2) Preparation of Janus snowman-shaped composite particles: take 1g of polystyrene hollow spheres and disperse them in 20g of water, and use NH 3 ·H 2 O (28wt%) adjusts the pH=8 of the solution, and stirs at 70°C to form a seed emulsion; mix 2g3-(methacryloyloxy)propyltrimethoxysilane (MPS), 2g1.0wt% potassium persulfate aqueous solution (KPS) and 0.02g sodium dodecylbenzenesulfonate (SDS) were ultrasonically dispersed in 10g water to form a monomer emulsion; the monomer emulsion was slowly added dropwise into the seed emulsion within 30 minutes, and reacted at 70°C for 12 After ~24 hours, the precipitate was collected by centrifugation, washed three times with water and ethanol respectively, separated by centrifugation ...

Embodiment 2

[0065] Example 2PF 6- Functionalized Janus snowman-shaped composite particles based on ionic liquid

[0066] (1) The preparation method is as follows

[0067] 1) Preparation of polystyrene hollow spheres: purchased from Rohm&Haas Company, the product code is HP-433

[0068] 2) Preparation of Janus snowman-shaped composite particles: same as in Example 1

[0069] 3) Preparation of imidazoline-based modified Janus snowman-shaped composite particles: same as in Example 1

[0070] 4) Cl - Preparation of ionic liquid-based functionalized Janus snowman-shaped composite particles: the same as in Example 1

[0071] 5) PF 6 - Preparation of ionic liquid-based Janus snowman-shaped composite particles: take 10mgCl - Based ionic liquid functionalized Janus snowman composite particles, ultrasonically dispersed in 5ml water, add 20mgKPF 6 , stirred at room temperature for 2h, centrifuged to take the precipitate, washed with water, centrifuged and vacuum dried for 12h to obtain white...

Embodiment 3

[0075] Example 3 Silicotungstic acid-based ionic liquid functionalized Janus snowman-shaped composite particles

[0076] (1) The preparation method is as follows

[0077] 1) Preparation of polystyrene hollow spheres: purchased from Rohm&Haas Company, the product code is HP-433

[0078] 2) Preparation of Janus snowman-shaped composite particles: same as in Example 1

[0079] 3) Preparation of imidazoline-based modified Janus snowman-shaped composite particles: same as in Example 1

[0080] 4) Cl - Preparation of ionic liquid-based functionalized Janus snowman-shaped composite particles: the same as in Example 1

[0081] 5) Preparation of silicotungstic acid-based ionic liquid functionalized Janus snowman-shaped composite particles: take 10mgCl - Based ionic liquid functionalized Janus snowman-shaped composite particles, ultrasonically dispersed in 5ml water, add 200mg silicotungstic acid group (H 3 [Si(W 3 o 10 ) 4 - ]), stirred at room temperature for 2 h, centrifuged...

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Abstract

The invention relates to an ionic liquid-functionalized snowman-shaped anisotropic composite material and a preparation method and application thereof. The preparation method comprises the steps that Janus snowman-shaped composite particles are prepared and then modified with ionic liquid, and imidazolinyl-modified Janus snowman-shaped composite particles are prepared; chlorobutane is added to obtain Cl-based ionic liquid-functionalized Janus snowman-shaped composite particles, and anion exchange is performed on the Cl-based ionic liquid-functionalized Janus snowman-shaped composite particles and multiple inorganic salts such as KPF6 and silicotungstic acid or phosphomolybdic acid and the like to prepare the PF6-based or silicotungstic acid-based or phosphomolybdic acid-based ionic liquid-functionalized Janus snowman-shaped composite particles. According to the material, not only is the morphology partitioned, but also the surface chemical property is partitioned, the polystyrene side is oleophylic, the silicon dioxide side is adjustable, and when the silicon dioxide side uses hydrophilic anions, the characteristics obtained when a general Janus material is used for stabling Pickering emulsion are achieved.

Description

technical field [0001] The invention belongs to the field of chemical synthesis, and in particular relates to an ionic liquid functionalized snowman-shaped anisotropic composite material capable of stabilizing Pickering emulsions. Background technique [0002] Pickering emulsions refer to emulsions stabilized by fine particles. Traditional Pickering particles usually use materials with a three-phase contact angle of 90 degrees, that is, extremely hydrophilic or extremely hydrophobic materials are not suitable for preparing Pickering emulsions. Since the French physicist P.G. deGennes first used the word Janus to describe the different chemical properties of the surface of inorganic particles at the same time in 1991, the research on microscopic particles with dual properties on the surface has become a research hotspot in the field of materials with special microstructures. This kind of Janus sheet material with different properties (such as hydrophilic / hydrophobic) on the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/00C09K23/00
CPCC09K23/002C09K23/54C09K23/00C09K23/16
Inventor 孟庆博冯天阳杨鹏梁福鑫杨振忠宋溪明
Owner LIAONING UNIVERSITY
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