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Preparation method for multifunctional pH-responsive type super-infiltration material and application in oil-water separation

A super-wetting and multi-functional technology, applied in the direction of liquid separation, separation methods, chemical instruments and methods, etc., to achieve the effect of mild reaction conditions, low equipment requirements, and uniform surface

Pending Publication Date: 2020-11-06
XIAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, so far, there are few reports on the use of oil-water separation materials for the separation of organic solvents

Method used

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  • Preparation method for multifunctional pH-responsive type super-infiltration material and application in oil-water separation
  • Preparation method for multifunctional pH-responsive type super-infiltration material and application in oil-water separation
  • Preparation method for multifunctional pH-responsive type super-infiltration material and application in oil-water separation

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preparation example Construction

[0039] The preparation process of the present invention is as follows: dissolving silane coupling agent, compound containing long carbon chain and acrylic acid in alcohol solvent, adding azobisisobutyronitrile, stirring and reacting at 70-90°C for 8-9 hours to obtain Mixed solution; put the pretreated clean fabric in the mixed solution, add inorganic micro-nano particles under stirring conditions, and ultrasonically disperse for 20-30 minutes; then add tetraethyl orthosilicate or butyl titanate, and heat After reacting for 1.5-2 hours, the fabric is taken out, and then dried at 80-100° C. for 1-2 hours to obtain a functionalized fabric with pH response.

[0040] Wherein, the silane coupling agent is vinyltrimethoxysilane or 3-(trimethoxysilane) propyl acrylate.

[0041] Compounds containing long carbon chains are tridecyl methacrylate, dodecyl methacrylate or hexadecyl methacrylate.

[0042] The alcoholic solvent is ethanol or methanol.

[0043] The mass ratio of the silane ...

Embodiment 1

[0051] The preparation method of the present embodiment comprises the following steps:

[0052] Step 1. Dissolve 0.28g of vinyltrimethoxysilane, 0.30g of tridecyl methacrylate and 0.32g of acrylic acid in 15mL of ethanol solvent, add 0.025g of azobisisobutyronitrile, and stir at 75°C React 9h, obtain mixed solution;

[0053] Step 2, soaking the pretreated clean fabric in the mixed solution of step 1;

[0054] Step 3: Add 0.20 g of micron-sized silicon dioxide and 0.10 g of nano-sized magnesium oxide particles to the mixed solution in step 1 under stirring conditions, and disperse ultrasonically for 20 minutes;

[0055] Step 4: Add 1.2 mL of tetraethyl orthosilicate to the reacted solution in Step 3, react at 50° C. for 2 hours, take out the fabric, and then dry it at a constant temperature of 80° C. for 2 hours to obtain a functionalized fabric with pH response.

[0056] figure 1 It is the scanning electron micrographs of the original fabric, the modified fabric and the mod...

Embodiment 2

[0066] Step 1. Dissolve 0.25g of vinyltrimethoxysilane, 0.28g of tridecyl methacrylate and 0.30g of acrylic acid in 10mL of ethanol solvent, add 0.020g of azobisisobutyronitrile, and stir at 70°C Reaction 8h, obtain mixed solution;

[0067] Step 2, soaking the pretreated clean fabric in the mixed solution of step 1;

[0068] Step 3. Add 0.18 g of micron-sized silicon dioxide and 0.13 g of nano-sized magnesium oxide particles to the mixed solution in step 1 under stirring conditions, and ultrasonically disperse for 30 minutes;

[0069] Step 4: Add 1.0 mL tetraethyl orthosilicate to the reacted solution in Step 3, react at 55° C. for 1.5 h, take out the fabric, and then dry it at 90° C. for 1 h to obtain a functionalized fabric with pH response.

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Abstract

The invention relates to a preparation method for a multifunctional pH-responsive type super-infiltration material and application in oil-water separation. A silane coupling agent, a long carbon chain-containing compound and acrylic acid are dissolved in an alcohols solvent, and azodiisobutyronitrile is added for a polymerization reaction to obtain a mixed solution; to-be-pretreated fabric is putin the mixed solution, inorganic micro-nano particles are added under stirring conditions, and are ultrasonically dispersed uniformly and ethyl orthosilicate or butyl titanate is added for a reactionat 50-60 DEG C for 1.5-2h to obtain the functionalized fabric with pH response. The material can be used for separation of various oil-water mixtures, can collect oil in water, and even can separate immiscible organic solvents. Therefore, the material has broad application prospects in the aspects of treating leaked crude oil and purifying industrial oily wastewater.

Description

technical field [0001] The invention belongs to the technical field of preparation and application of a responsive superwetting material, and in particular relates to a preparation method of a multifunctional pH responsive superwetting material and its application in oil-water separation. Background technique [0002] In recent years, with the continuous improvement of people's living standards and rapid economic growth, environmental issues have increasingly become the focus of everyone's attention. Especially the frequent occurrence of oil spill accidents and the indiscriminate discharge of waste water make oil-water separation materials increasingly demanded. However, at present, a large number of oil-water separation materials have been manufactured and applied in real life. The traditional separation methods of oil-water separation, such as gravity separation, centrifugal separation and electrocoagulation, have some disadvantages such as high cost, low separation effic...

Claims

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Application Information

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IPC IPC(8): D06M15/356D06M15/263D06M11/79D06M11/44D06M11/46D06M14/00B01D17/022
CPCD06M15/3568D06M15/263D06M11/79D06M11/44D06M11/46D06M14/00B01D17/0202
Inventor 屈孟男何金梅刘倩罗占霞史樊彭磊
Owner XIAN UNIV OF SCI & TECH
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