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Preparation method and application of organic liquid separation net film based on wettability differences

An organic liquid and ophthalmic membrane technology, applied in the field of organic liquid separation ophthalmic membrane preparation, can solve the problems of intolerance to organic solvents, inability to achieve organic liquid separation, restricting the development and application of organic liquid separation technology, and achieves low cost and good separation. Effect, preparation method Simple effect

Active Publication Date: 2015-10-07
BEIJING NATURE STONE SCI TECH DEVP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, these oil-water separation membranes show similar wettability to organic liquids, and cannot achieve separation between organic liquids
Moreover, most omentum materials are not resistant to organic solvents, which greatly limits the development and application of organic liquid separation technology.

Method used

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  • Preparation method and application of organic liquid separation net film based on wettability differences
  • Preparation method and application of organic liquid separation net film based on wettability differences
  • Preparation method and application of organic liquid separation net film based on wettability differences

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] (1) Put 4 grams of PVP (molecular weight: 1,300,000), 20 grams of ethanol, and 4 grams of acetic acid in a 50-ml Erlenmeyer flask, and stir for 1 to 2 hours to form a uniform and transparent solution. Then 7 grams of tetrabutyl titanate and 5 grams of ethyl orthosilicate were added, and stirred for another 24 hours to form an electrospinning solution.

[0047](2) Electrospinning device As shown in the attached figure, connect the electrospinning solution to a 9# flat-headed electrospinning needle (1 mm inner diameter) through a syringe pump, a syringe, and an extension tube. The positive electrode of the high-voltage power supply is connected to the electrospinning needle, and the negative electrode is connected to aluminum foil as a fiber receiving plate. Under the action of high-voltage electric field, the electrospinning solution is stretched and solidified to form fibers, which are collected on the receiving plate. The working parameters of electrospinning were as ...

Embodiment 2

[0053] (1) Put 4 grams of PVP (molecular weight: 1,300,000), 20 grams of ethanol, and 4 grams of acetic acid in a 50-ml Erlenmeyer flask, and stir for 1 to 2 hours to form a uniform and transparent solution. Then 7 grams of tetrabutyl titanate and 5 grams of ethyl orthosilicate were added, and stirred for another 24 hours to form an electrospinning solution.

[0054] (2) Electrospinning device As shown in the attached figure, connect the electrospinning solution to a 9# flat-headed electrospinning needle (1 mm inner diameter) through a syringe pump, a syringe, and an extension tube. The positive electrode of the high-voltage power supply is connected to the electrospinning needle, and the negative electrode is connected to aluminum foil as a fiber receiving plate. Under the action of high-voltage electric field, the electrospinning solution is stretched and solidified to form fibers, which are collected on the receiving plate. The working parameters of electrospinning were as...

Embodiment 3

[0060] (1) Put 4 grams of PVP (molecular weight: 1,300,000), 20 grams of ethanol, and 4 grams of acetic acid in a 50-ml Erlenmeyer flask, and stir for 1 to 2 hours to form a uniform and transparent solution. Then 7 grams of tetrabutyl titanate and 5 grams of ethyl orthosilicate were added, and stirred for another 24 hours to form an electrospinning solution.

[0061] (2) Electrospinning device As shown in the attached figure, connect the electrospinning solution to a 9# flat-headed electrospinning needle (1 mm inner diameter) through a syringe pump, a syringe, and an extension tube. The positive electrode of the high-voltage power supply is connected to the electrospinning needle, and the negative electrode is connected to aluminum foil as a fiber receiving plate. Under the action of high-voltage electric field, the electrospinning solution is stretched and solidified to form fibers, which are collected on the receiving plate. The working parameters of electrospinning were as...

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PUM

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Abstract

The invention relates to a preparation method and application of an organic liquid separation net film based on wettability differences. An inorganic oxide fiber net film prepared through an electrostatic spinning method serves as the base of the organic liquid separation net film. A surface chemical grafting method is adopted. The inorganic oxide fiber net film is embellished with a series of alkyl group molecular wrapping layers in different carbon chain lengths, and therefore the net film having different kinds of wettability on organic liquid can be obtained. The organic liquid separation net film has different wetting behaviors on various kinds of organic liquid, the wettability of the net film on the organic liquid can be regulated and controlled according to separation requirements, the organic liquid low in surface tension value can penetrate through the net film, and the organic liquid high in surface tension value is intercepted by the net film. The net film can be applied to separating heterogeneous organic liquid with different surface tension values and relates to various fields of petrochemical engineering, textile printing and dyeing, pharmacy, leather making, machining and the like.

Description

technical field [0001] The invention belongs to the technical fields of chemical engineering and functional materials, and in particular relates to a preparation method and application of an organic liquid separation omentum based on wettability differences. Background technique [0002] Separation of organic liquids is a subject closely related to human daily production, involving many industries such as petrochemical, textile printing and dyeing, pharmaceuticals, tanning, and mechanical processing. If these liquid mixtures are not handled properly, they will seriously pollute the environment, destroy the ecological balance, and endanger human safety. At present, the separation between organic liquids generally adopts distillation or pervaporation. Although these two methods can achieve the purpose of effective separation, they all need to invest in large-scale equipment, which is time-consuming and costly. How to quickly and efficiently separate organic liquids is an urg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/06B01D71/02B01D69/02B01D67/00B01D17/00
Inventor 江雷王莉赵勇田野
Owner BEIJING NATURE STONE SCI TECH DEVP
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