CN111499920A - Super-hydrophobic oil absorption sponge with demulsification function and preparation method thereof - Google Patents
Super-hydrophobic oil absorption sponge with demulsification function and preparation method thereof Download PDFInfo
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- CN111499920A CN111499920A CN202010540377.1A CN202010540377A CN111499920A CN 111499920 A CN111499920 A CN 111499920A CN 202010540377 A CN202010540377 A CN 202010540377A CN 111499920 A CN111499920 A CN 111499920A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/36—After-treatment
- C08J9/40—Impregnation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0202—Separation of non-miscible liquids by ab- or adsorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/26—Synthetic macromolecular compounds
- B01J20/265—Synthetic macromolecular compounds modified or post-treated polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/28042—Shaped bodies; Monolithic structures
- B01J20/28045—Honeycomb or cellular structures; Solid foams or sponges
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3202—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the carrier, support or substrate used for impregnation or coating
- B01J20/3206—Organic carriers, supports or substrates
- B01J20/3208—Polymeric carriers, supports or substrates
- B01J20/3212—Polymeric carriers, supports or substrates consisting of a polymer obtained by reactions otherwise than involving only carbon to carbon unsaturated bonds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/16—Solid spheres
- C08K7/18—Solid spheres inorganic
Abstract
The invention provides a super-hydrophobic oil absorption sponge with a demulsification function and a preparation method thereof. The sponge has excellent oil absorption performance on different oil/water mixtures, has excellent demulsification and separation effects on oil-water emulsions, and has huge application prospect in the aspect of treatment of oily sewage.
Description
Technical Field
The invention relates to a super-hydrophobic oil absorption sponge with a demulsification function and a preparation method thereof, belonging to the technical field of new materials.
Background
With the frequent occurrence of offshore oil spill and oil leakage accidents and the discharge of a large amount of petrochemical industry wastewater, the production of a large amount of oily wastewater poses serious threats to coastal environments and marine ecosystems. Therefore, the separation and recovery of large amounts of oil and organic pollutants from water is particularly important to alleviate environmental pollution problems. The general oil-water separation method mainly comprises an oil skimmer separation method, a centrifugal method, a flotation method, a chemical method, a membrane separation method, an adsorption method and the like. The adsorption method has the advantages of simple operation method, high recovery rate, low cost, environmental protection, no pollution, no limitation on operation places and the like, and is a common method for treating oily sewage at present.
The adsorbent is a key factor influencing the oil-water separation performance of the adsorption method, and at present, common adsorbents are mainly divided into three types: synthetic fibers, natural fibers, and porous materials. Among them, cellulose aerogel, graphene aerogel and other three-dimensional porous materials are widely concerned due to their good super-hydrophobic-super-oleophilic properties, strong adsorption capacity and good recyclability. However, these porous materials are difficult to produce on a large scale due to their poor mechanical properties, complex manufacturing processes, high cost, etc., which greatly limits their practical applications. In recent years, the potential application of commercial polymer sponge with the characteristics of high porosity, high elasticity, low cost and the like in the aspect of oil absorption has attracted general attention. However, since these commercial polymer sponges are generally hydrophilic, they are first hydrophobized. In addition, the obtained super-hydrophobic-super-oleophilic sponge can only remove oil products in an oil/water mixture generally, and can not perform emulsion breaking and separation on oil-water emulsion. Therefore, the development of the super-hydrophobic oil absorption sponge with strong oil absorption capacity and good demulsification capacity can make the treatment of oil spill accidents and oily wastewater more simple, convenient and efficient.
According to the invention, commercial polyurethane sponge with high porosity, high elasticity and low cost is selected as a substrate, firstly, dopamine oxidation and self-polymerization reaction is utilized to firmly fix iron oxyhydroxide microspheres on the polyurethane sponge, and then octadecylamine is used for carrying out hydrophobic modification on the polyurethane sponge, so that the super-hydrophobic oil absorption sponge with the demulsification function is finally obtained. The sponge has excellent oil absorption performance on different oil/water mixtures, has excellent demulsification and separation effects on oil-water emulsions, and has huge application prospect in the aspect of treatment of oily sewage.
Disclosure of Invention
The invention aims to provide a super-hydrophobic oil absorption sponge with a demulsification function and a preparation method thereof, and can solve the problems of poor mechanical property, poor adsorption property, poor demulsification effect and the like of the conventional oil absorption material.
In order to achieve the purpose, the invention is realized by the following technical scheme:
in order to achieve the above purpose, in one aspect, the present specification provides a super-hydrophobic oil absorption sponge with a demulsification function, which is characterized by comprising a polyurethane sponge, iron oxyhydroxide microspheres fixed on the sponge by polydopamine, and an octadecylamine nanosheet array modified on the sponge, wherein the diameter of the iron oxyhydroxide microspheres is 0.8-1.5 micrometers, and the thickness of the octadecylamine nanosheets is 80-120 nanometers.
In the super-hydrophobic oil absorption sponge with the demulsification function, preferably, an octadecylamine nanosheet array is modified on the surface of the sponge, and the thickness of the nanosheet is 80-120 nanometers.
In another aspect, the present specification provides a preparation method of the above super-hydrophobic oil absorption sponge with a demulsification function, including the following steps:
(1) cutting a commercial polyurethane sponge into cubes of 1 cubic centimeter, sequentially putting the cubes in ethanol and deionized water, performing ultrasonic treatment for 60 minutes respectively, and drying the cubes at the temperature of 60 ℃ for 12 hours;
(2) preparing 2 g of dopamine solution per liter, taking water as a solvent, and adjusting the pH value of the solution to 8.5 by using Tris-HCl buffer solution;
(3) adding iron oxyhydroxide microspheres into the dopamine solution obtained in the step (2), wherein the mass concentration is 0.1 gram per liter, and performing ultrasonic treatment for 10 minutes to uniformly disperse the iron oxyhydroxide microspheres;
(4) adding the cleaned polyurethane sponge into the mixed dispersion liquid of dopamine and iron oxyhydroxide obtained in the step (3), continuously stirring by magnetic force, reacting for 6 hours at room temperature, washing with deionized water after taking out, and vacuum-drying for 12 hours at 60 ℃;
(5) preparing 4 g of octadecylamine solution per liter, wherein the solvent is absolute ethyl alcohol;
(6) and (3) soaking the product obtained in the step (4) in the octadecylamine solution obtained in the step (5) for 4 hours at 40 ℃, taking out, and then carrying out vacuum drying for 12 hours at 50 ℃ to finally obtain the super-hydrophobic oil absorption sponge with the demulsification function.
The super-hydrophobic oil absorption sponge with the demulsification function can be applied to oil absorption, the variety of oil absorption materials is expanded, the sponge has excellent oil absorption performance on different oil/water mixtures, and excellent demulsification and separation effects on oil-water emulsions, and has a huge application prospect in the aspect of treatment of oily sewage.
Description of the drawings:
fig. 1 is a scanning electron microscope image of a super-hydrophobic oil absorption sponge with demulsification function prepared in the examples of the present specification, wherein, the image of the left half part (a) of fig. 1 is a scanning electron microscope image of the sponge under low magnification, and the image of the right half part (b) of fig. 1 is a scanning electron microscope image of the sponge under high magnification.
The specific implementation mode is as follows:
the present invention is described in detail below with reference to the drawings and examples.
Example 1
In this embodiment 1, a super-hydrophobic oil absorption sponge with a demulsification function is specifically prepared, and the preparation process is as follows:
(1) cutting a commercial polyurethane sponge into cubes of 1 cubic centimeter, sequentially putting the cubes in ethanol and deionized water for 60 minutes respectively, and drying the cubes for 12 hours at 60 ℃ to obtain the cleaned polyurethane sponge;
(2) adding 0.4 g of dopamine into 200 ml of deionized water, carrying out magnetic stirring to form 2 g of dopamine solution per liter, measuring 2.5 ml of Tris-HCl buffer solution, dropwise adding, continuing magnetic stirring, and adjusting the pH value of the solution to 8.5;
(3) adding 0.02 g of ferric hydroxide microspheres into the dopamine solution obtained in the step (2) to ensure that the mass concentration of the ferric hydroxide is 0.1 g per liter, and performing ultrasonic treatment for 10 minutes to uniformly disperse the ferric hydroxide microspheres;
(4) adding the cleaned polyurethane sponge into the mixed dispersion liquid of dopamine and iron oxyhydroxide obtained in the step (3), continuously stirring by magnetic force, reacting for 6 hours at room temperature, washing with deionized water after taking out, and vacuum-drying for 12 hours at 60 ℃;
(5) adding 0.4 g of octadecylamine into 100 ml of absolute ethyl alcohol, and magnetically stirring to form 4 g of octadecylamine solution per liter;
(6) and (3) soaking the product obtained in the step (4) in the octadecylamine solution obtained in the step (5) for 4 hours at 40 ℃, taking out, and then carrying out vacuum drying for 12 hours at 50 ℃ to finally obtain the super-hydrophobic oil absorption sponge with the demulsification function.
FIG. 1 shows a scanning electron microscope image of a super-hydrophobic oil absorption sponge with a demulsification function, wherein an octadecylamine nanosheet array is modified on the surface of the sponge, and the thickness of the nanosheet is 80-120 nanometers.
Claims (3)
1. A preparation method of a super-hydrophobic oil absorption sponge with a demulsification function is characterized by comprising the following steps:
(1) cutting a commercial polyurethane sponge into cubes of 1 cubic centimeter, sequentially putting the cubes in ethanol and deionized water, performing ultrasonic treatment for 60 minutes respectively, and drying the cubes at the temperature of 60 ℃ for 12 hours;
(2) preparing 2 g of dopamine solution per liter, taking water as a solvent, and adjusting the pH value of the solution to 8.5 by using Tris-HCl buffer solution;
(3) adding iron oxyhydroxide microspheres into the dopamine solution obtained in the step (2), wherein the mass concentration is 0.1 gram per liter, and performing ultrasonic treatment for 10 minutes to uniformly disperse the iron oxyhydroxide microspheres;
(4) adding the cleaned polyurethane sponge into the mixed dispersion liquid of dopamine and iron oxyhydroxide obtained in the step (3), continuously stirring by magnetic force, reacting for 6 hours at room temperature, washing with deionized water after taking out, and vacuum-drying for 12 hours at 60 ℃;
(5) preparing 4 g of octadecylamine solution per liter, wherein the solvent is absolute ethyl alcohol;
(6) and (3) soaking the product obtained in the step (4) in the octadecylamine solution obtained in the step (5) for 4 hours at 40 ℃, taking out, and then carrying out vacuum drying for 12 hours at 50 ℃ to finally obtain the super-hydrophobic oil absorption sponge with the demulsification function.
2. The super-hydrophobic oil absorption sponge with the demulsification function prepared by the method of claim 1 is characterized by comprising a polyurethane sponge, iron oxyhydroxide microspheres fixed on the sponge by polydopamine and an octadecylamine nanosheet array modified on the sponge.
3. The super-hydrophobic oil absorption sponge with demulsification function as claimed in claim 2, wherein the sponge surface is modified with octadecylamine nanosheet arrays, and the thickness of the nanosheets is 80-120 nm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010540377.1A CN111499920A (en) | 2020-06-15 | 2020-06-15 | Super-hydrophobic oil absorption sponge with demulsification function and preparation method thereof |
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| CN202010540377.1A CN111499920A (en) | 2020-06-15 | 2020-06-15 | Super-hydrophobic oil absorption sponge with demulsification function and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113415848A (en) * | 2021-06-17 | 2021-09-21 | 大连海事大学 | Janus combined device for capturing and collecting underwater oil and preparation method thereof |
| CN117186488A (en) * | 2023-08-24 | 2023-12-08 | 广州大学 | beta-FeOOH modified polyurethane foam, preparation method and application |
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| CN105126767A (en) * | 2015-08-28 | 2015-12-09 | 南京理工大学 | Super-hydrophobic hollow Fe3O4/mesoporous silicon dioxide nanocomposite, preparation method and application thereof |
| CN105413656A (en) * | 2015-12-03 | 2016-03-23 | 梅庆波 | Preparation method of super-hydrophobic polyurethane sponge/iron oxide composite material used for oil-water separation |
| CN108912388A (en) * | 2018-07-13 | 2018-11-30 | 天津工业大学 | A kind of preparation method of super-hydrophobic sponge and its application in water-in-oil emulsion separation |
| CN110787487A (en) * | 2019-11-14 | 2020-02-14 | 中国石油大学(华东) | Sea urchin-shaped microsphere modified oil-water separation metal net film and preparation method thereof |
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2020
- 2020-06-15 CN CN202010540377.1A patent/CN111499920A/en active Pending
Patent Citations (4)
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| CN105126767A (en) * | 2015-08-28 | 2015-12-09 | 南京理工大学 | Super-hydrophobic hollow Fe3O4/mesoporous silicon dioxide nanocomposite, preparation method and application thereof |
| CN105413656A (en) * | 2015-12-03 | 2016-03-23 | 梅庆波 | Preparation method of super-hydrophobic polyurethane sponge/iron oxide composite material used for oil-water separation |
| CN108912388A (en) * | 2018-07-13 | 2018-11-30 | 天津工业大学 | A kind of preparation method of super-hydrophobic sponge and its application in water-in-oil emulsion separation |
| CN110787487A (en) * | 2019-11-14 | 2020-02-14 | 中国石油大学(华东) | Sea urchin-shaped microsphere modified oil-water separation metal net film and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113415848A (en) * | 2021-06-17 | 2021-09-21 | 大连海事大学 | Janus combined device for capturing and collecting underwater oil and preparation method thereof |
| CN117186488A (en) * | 2023-08-24 | 2023-12-08 | 广州大学 | beta-FeOOH modified polyurethane foam, preparation method and application |
| CN117186488B (en) * | 2023-08-24 | 2024-05-03 | 广州大学 | Beta-FeOOH modified polyurethane foam, preparation method and application |
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Application publication date: 20200807 |