CN116043416A - Electrostatic spinning super-hydrophobic membrane for oil-water separation and preparation method thereof - Google Patents
Electrostatic spinning super-hydrophobic membrane for oil-water separation and preparation method thereof Download PDFInfo
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
- D04H1/728—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by electro-spinning
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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
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/425—Cellulose series
- D04H1/4258—Regenerated cellulose series
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/77—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof
- D06M11/79—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof with silicon dioxide, silicic acids or their salts
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
- D06M15/6436—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain containing amino groups
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
- D06M2101/06—Vegetal fibres cellulosic
- D06M2101/08—Esters or ethers of cellulose
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/10—Repellency against liquids
- D06M2200/12—Hydrophobic properties
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/204—Keeping clear the surface of open water from oil spills
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention belongs to the technical field of organic materials, and relates to an electrostatic spinning superhydrophobic film for oil-water separation and a preparation method thereof. The preparation method of the electrostatic spinning super-hydrophobic film comprises the following steps: immersing the nitrocellulose membrane into an amino silicone oil solution for 20-50 min, drying, immersing into a gas phase particle solution for 20-50 min, and drying at room temperature to obtain the electrostatic spinning super-hydrophobic membrane. According to the invention, through an electrostatic spinning technology, amino silicone oil and a gas phase particle solution are modified to obtain the electrostatic spinning super-hydrophobic membrane for oil-water separation. The electrostatic spinning superhydrophobic film provided by the invention has higher oil-water separation efficiency and can be reused.
Description
Technical Field
The invention belongs to the technical field of organic materials, and relates to an electrostatic spinning superhydrophobic film for oil-water separation and a preparation method thereof.
Background
Along with the urgent need of realizing high-quality and innovative development of the economic construction of China, the ecological environment protection of China faces more serious tests. The demand of human beings for petrochemical products, the resource exploitation and utilization rate are continuously increased, and a large amount of oily wastewater is generated in petroleum exploitation, processing and transportation processes and other chemical processes and production processes. The discharge of oily wastewater into the soil environment in large quantities is extremely serious, and new materials are required to be prepared for purifying the oily wastewater so as to reach the standard of being discharged into the soil environment.
Cellulose is a homopolysaccharide containing linear linked anhydroglucose units, which is not affected by water solubility, has a hierarchical structure, including aligned and non-aligned chains, which contributes to its physical and chemical properties over other materials, and molecular aggregation within the cellular structure increases its excellent material properties. Cellulose contains three hydroxyl groups in each repeating unit of the molecule and has significant hydrophilicity. Cellulose is regarded as a substitute of petroleum-based polymers as one of the main components of cellulose biological resources, has excellent properties such as biocompatibility, biodegradability and sustainable utilization, and the like, and natural cellulose has large capacity, low cost, no toxicity or harm, easy modification and good interaction and reaction performance.
In the prior art, a technology for separating oil from water of a nitrocellulose membrane is disclosed in CN106362440B, which discloses a preparation and application method of a nitrocellulose membrane with high-efficiency oil-water separation, and has the special properties of super-hydrophilicity on water and super-oleophobic under water, and in CN113230909B, which discloses a super-amphipathic nitrocellulose membrane with the properties of super-amphipathic in air, super-oleophobic under water and super-oleophobic under oil. The preparation method for the oil-water separation membrane disclosed in the above patent needs to adopt micron-sized perforation, is too complex to operate, or has the risk of membrane pollution. At present, no technology for preparing a hydrophobic membrane by using a nitrocellulose membrane is known, and a person skilled in the art cannot know how to prepare a super-hydrophobic membrane by using the nitrocellulose membrane and the effect of the super-hydrophobic membrane in oil-water separation.
Compared with the traditional oil-water separation technology, the membrane separation technology has the advantages of simplicity in operation, high separation efficiency, energy conservation and the like, but the problem of membrane pollution is difficult to effectively solve. Cellulose has excellent characteristics of biocompatibility, biodegradability, sustainable utilization and the like, but has good hydrophilicity naturally, is difficult to prepare a hydrophobic membrane, is more difficult to prepare a super-hydrophobic membrane and realizes strong oil-water separation.
Disclosure of Invention
The invention aims to prepare a nitrocellulose membrane into a hydrophobic membrane, and prepare the super-hydrophobic membrane with excellent oil-water separation effect through surface modification.
Based on the above objects, the present invention provides an electrospun superhydrophobic film for oil-water separation and a method for preparing the same to meet the needs of the art.
In one aspect, the invention relates to a method for preparing an electrospun superhydrophobic film comprising: immersing the nitrocellulose membrane into an amino silicone oil solution for 20-50 min, drying, immersing into a gas phase particle solution for 20-50 min, and drying at room temperature to obtain the electrostatic spinning super-hydrophobic membrane.
Further, in the preparation method of the electrostatic spinning super-hydrophobic film provided by the invention, the preparation method of the nitrocellulose film comprises the following steps: preparing nitrocellulose, a high-volatility polar organic solvent and a high-conductivity polar solvent to obtain a nitrocellulose spinning solution, and carrying out electrostatic spinning and vacuum drying to obtain the nitrocellulose membrane.
Further, in the preparation method of the electrostatic spinning super-hydrophobic film provided by the invention, the mass concentration of the nitrocellulose spinning solution is 16-36%; specifically, the preparation method comprises the following steps: each 14mL of the nitrocellulose spinning solution contains 2-6g of nitrocellulose, 8-12mL of high-volatility polar organic solvent and 2-6mL of high-conductivity polar solvent.
Further, in the preparation method of the electrostatic spinning super-hydrophobic film provided by the invention, the high-volatility polar organic solvent is acetone, and the high-conductivity polar solvent is N, N-dimethylformamide; the vacuum drying is carried out for 4-24h under the vacuum environment with the temperature not exceeding 40 ℃.
Further, in the preparation method of the electrostatic spinning super-hydrophobic film provided by the invention, the preparation method of the amino silicone oil solution comprises the following steps: dissolving amino silicone oil in one of n-hexane or petroleum ether; specifically, the mass concentration of the amino silicone oil solution is 0.01% -5%.
Further, in the preparation method of the electrostatic spinning super-hydrophobic film provided by the invention, the preparation method of the gas phase particle solution comprises the following steps: dissolving the gas phase particles in one of n-hexane or petroleum ether; specifically, the mass concentration of the gas phase particle solution is 0.01% -1%.
Further, in the preparation method of the electrostatic spinning superhydrophobic film provided by the invention, the gas phase particles are gas phase SiO 2 And (3) nanoparticles.
In another aspect, the invention relates to an electrospun superhydrophobic film prepared by the preparation method, wherein the contact angle of the electrospun superhydrophobic film to water is greater than 150 °.
On the other hand, the invention relates to application of the electrostatic spinning superhydrophobic film in oil-water separation.
In order to improve the antifouling property of the hydrophobic membrane material, the invention adopts the combination of the electrostatic spinning technology and the post-treatment technology to prepare the membrane material with uniform fiber morphology, stable structure and uniform thickness; the concentration of the spinning solution, the concentration of the amino silicone oil solution and the gas phase SiO are controlled respectively 2 The concentration of the solution is used to obtain the super-hydrophobic film with different wettability. The invention selects nitrocellulose, the higher the molecular weight is, the entanglement of molecular chains in the solution is increased, jet flow is stretched in the electrostatic spinning process, so that the molecular chains are well oriented, the effect of external force is resisted, the spinning fracture is avoided, and the nanofiber is easy to be uniformly collected on a flat plate receiver. The invention selects the polar organic solvent with high volatility to spinThe solvent is extremely volatile in the process, the polymer molecular chains are unfolded in the spinning process, the solution forms jet flow, the solution is highly stretched by electromagnetic force, the polymer molecular chains are reoriented and arranged, and the jet flow is solidified into polymer fibers along with the volatilization of the solvent. The magnitude of the volatility of the solvent can affect the stretching and curing of the jet. The invention selects the high-volatility polar organic solvent, and can well obtain uniform fibers collected on the surface of the receiving device. The invention selects the polar solvent with high conductivity as the solvent with higher dielectric constant, and the dielectric constant of the solvent can directly influence the diameter of the fiber, and the higher the dielectric constant is, the smaller the diameter is and the diameter distribution is narrower. The super-hydrophobic membrane is applied to oil-water separation, so that the efficient oil-water separation effect is finally realized, and the membrane has good self-cleaning performance.
Compared with the prior art, the invention has the following beneficial effects or advantages:
the invention prepares the super-hydrophobic membrane for oil-water separation by combining an electrostatic spinning technology with a post-treatment method. The morphology structure, wettability and the like of the obtained super-hydrophobic membrane are controllably adjusted by adjusting and controlling the concentration of the spinning solution, the dosage of the amino silicone oil, the dosage of the gas phase particles and the like, so that the separation efficiency of the oil-water solution is improved. Experiments prove that the super-hydrophobic membrane material has higher oil-water separation efficiency when being used for oil-water separation, and the membrane material cannot be polluted and can be reused.
Drawings
Fig. 1 is a surface topography of a nitrocellulose membrane provided in example 1.
Fig. 2 is a surface topography of the electrospun superhydrophobic film provided in example 1.
Fig. 3 is a water contact angle graph of the nitrocellulose membrane provided in example 2.
Fig. 4 is a graph of water contact angle of the electrospun superhydrophobic film provided in example 2.
Fig. 5 is a graph of experimental results of electrospun superhydrophobic films for separation of oil-water mixtures.
Detailed Description
In order that those skilled in the art will better understand the technical solution of the present invention, the present invention will be further described with reference to specific examples, but the examples are not intended to limit the present invention.
The experimental methods and the detection methods described in the following examples are all conventional methods unless otherwise specified; the reagents and materials are commercially available unless otherwise specified.
Example 1
The embodiment provides a preparation method of an electrostatic spinning super-hydrophobic film.
and step 4, accurately measuring Amino Silicone Oil (ASO) and dissolving the Amino Silicone Oil (ASO) in an n-hexane solution to obtain the ASO solution with the concentration of 0.05%. The electrospun NC films were taken and immersed in ASO solution, respectively. Drying after 30 minutes to obtain an NC film modified by ASO, wherein the NC film is marked as NC@ASO film;
step 5, accurately weighing gas phase SiO 2 Dissolving the particles in n-hexane solution to obtain SiO 2 The concentration of the solution was 0.01%. Impregnating NC@ASO film into SiO 2 In solution, followed by drying at room temperature. Preserving in a sealed bag to obtain SiO 2 Modified NC film, labeled NC@ASO/SiO 2 The membrane, i.e. the electrospun superhydrophobic membrane.
Fig. 1 is a surface topography of a nitrocellulose membrane provided in example 1. FIG. 2 is an electrostatic charge provided in example 1Surface topography of the spinning superhydrophobic film. As can be seen by comparing fig. 1 and 2, the solution of ASO and the gas phase SiO 2 The NC film surface fiber after solution treatment forms a necessary structure for constructing super-hydrophobic performance, namely, a micron nano coarse structure.
Example 2
The embodiment provides a preparation method of an electrostatic spinning super-hydrophobic film.
and step 4, accurately measuring Amino Silicone Oil (ASO) and dissolving the Amino Silicone Oil (ASO) in an n-hexane solution to obtain the ASO solution with the concentration of 0.1%. The electrospun NC films were taken and immersed in ASO solution, respectively. Drying after 30 minutes to obtain an NC film modified by ASO, wherein the NC film is marked as NC@ASO film;
step 5, accurately weighing gas phase particles, dissolving the gas phase particles in a normal hexane solution to obtain SiO 2 The concentration of the solution was 0.02%. Impregnating NC@ASO film into SiO 2 In solution, followed by drying at room temperature. Preserving in a sealed bag to obtain SiO 2 Modified NC film, labeled NC@ASO/SiO 2 The membrane, i.e. the electrospun superhydrophobic membrane.
Fig. 3 is a water contact angle graph of the nitrocellulose membrane provided in example 2. Fig. 4 is a graph of water contact angle of the electrospun superhydrophobic film provided in example 2. Wherein the contact angle of FIG. 3 is 136.8, is a hydrophobic film, and the contact angle of FIG. 4 is 159.6, since the contact angle is greater than 150, the NC@A prepared can be determinedSO/SiO 2 The membrane is a superhydrophobic membrane.
Example 3
The embodiment provides a preparation method of an electrostatic spinning super-hydrophobic film.
and step 4, accurately measuring Amino Silicone Oil (ASO) and dissolving the Amino Silicone Oil (ASO) in an n-hexane solution to obtain the ASO solution with the concentration of 0.3%. The electrospun NC films were taken and immersed in ASO solution, respectively. Drying after 30 minutes to obtain an NC film modified by ASO, wherein the NC film is marked as NC@ASO film;
step 5, accurately weighing gas phase particles, dissolving the gas phase particles in a normal hexane solution to obtain SiO 2 The concentration of the solution was 0.03%. Impregnating NC@ASO film into SiO 2 In solution, followed by drying at room temperature. Preserving in a sealed bag to obtain SiO 2 Modified NC film, labeled NC@ASO/SiO 2 The membrane, i.e. the electrospun superhydrophobic membrane.
Example 4
The embodiment provides a preparation method of an electrostatic spinning super-hydrophobic film.
and step 4, accurately measuring Amino Silicone Oil (ASO) and dissolving the Amino Silicone Oil (ASO) in an n-hexane solution to obtain the ASO solution with the concentration of 0.5%. The electrospun NC films were taken and immersed in ASO solution, respectively. Drying after 30 minutes to obtain an NC film modified by ASO, wherein the NC film is marked as NC@ASO film;
step 5, accurately weighing gas phase particles, dissolving the gas phase particles in a normal hexane solution to obtain SiO 2 The concentration of the solution was 0.04%. Impregnating NC@ASO film into SiO 2 In solution, followed by drying at room temperature. Preserving in a sealed bag to obtain SiO 2 Modified NC film, labeled NC@ASO/SiO 2 The membrane, i.e. the electrospun superhydrophobic membrane.
Example 5
The embodiment provides a preparation method of an electrostatic spinning super-hydrophobic film.
and step 4, accurately measuring Amino Silicone Oil (ASO) and dissolving the Amino Silicone Oil (ASO) in an n-hexane solution to obtain the ASO solution with the concentration of 0.8%. The electrospun NC films were taken and immersed in ASO solution, respectively. Drying after 30 minutes to obtain an NC film modified by ASO, wherein the NC film is marked as NC@ASO film;
step 5, accurately weighing gas phase particles, dissolving the gas phase particles in a normal hexane solution to obtain SiO 2 The concentration of the solution was 0.05%. Impregnating NC@ASO film into SiO 2 In solution, followed by drying at room temperature. Preserving in a sealed bag to obtain SiO 2 Modified NC film, labeled NC@ASO/SiO 2 The membrane, i.e. the electrospun superhydrophobic membrane.
Example 5
The embodiment provides an experiment of using the electrostatic spinning super-hydrophobic membrane for oil-water separation.
FIG. 5 is a diagram showing NC@ASO/SiO obtained by a method for preparing an electrostatic spinning super-hydrophobic membrane for oil-water separation 2 Experimental results for the separation of oil-water mixtures using membranes.
As shown in FIG. 5, NC@ASO/SiO obtained in example 4 2 The film was covered on beaker 1 and an oil-water mixture of n-hexane and deionized water (v/v=1:1) was prepared in beaker 2. When the oil-water mixture is poured onto the surface of the film of the beaker 1, the oil can rapidly diffuse, penetrate the film and drop into the bottom of the beaker 1, while the water stays on the surface of the film and cannot permeate NC@ASO/SiO 2 Film, indicating NC@ASO/SiO 2 The membrane remains hydrophobic to water and can be wetted by n-hexane. The electrospun super-hydrophobic membranes provided in any of examples 1-4 all showed the oil-water separation effect shown in fig. 5, whereas nc@aso membranes without vapor phase particle solution impregnation were not capable of oil-water separation. In addition, the film has superhydrophobicity and lipophilicity and good oil-water separation effect by combining the test result of the wettability of fig. 4 and the quick and efficient oil-water separation experimental result.
In conclusion, the electrostatic spinning super-hydrophobic membrane for oil-water separation is prepared by combining an electrostatic spinning technology with a post-treatment technology. The morphology structure, wettability and the like of the obtained NC film are controllably adjusted by adjusting and controlling the concentration of the spinning solution, the dosage of the silane agent, the dosage of the gas phase particles and the like, so that the oil-water solution separation efficiency is improved. Experiments prove that the super-hydrophobic membrane has higher oil-water separation efficiency when being used for oil-water separation, and the membrane material has good self-cleaning performance and can be reused.
The present invention may be better implemented as described above, and the above examples are merely illustrative of preferred embodiments of the present invention and not intended to limit the scope of the present invention, and various changes and modifications made by those skilled in the art to the technical solution of the present invention should fall within the scope of protection defined by the present invention without departing from the spirit of the design of the present invention.
Claims (9)
1. The preparation method of the electrostatic spinning superhydrophobic film is characterized by comprising the following steps of: immersing the nitrocellulose membrane into an amino silicone oil solution for 20-50 min, drying, immersing into a gas phase particle solution for 20-50 min, and drying at room temperature to obtain the electrostatic spinning super-hydrophobic membrane.
2. The method for preparing an electrospun superhydrophobic film according to claim 1, wherein the method for preparing a nitrocellulose membrane comprises: preparing nitrocellulose, a high-volatility polar organic solvent and a high-conductivity polar solvent to obtain a nitrocellulose spinning solution, and carrying out electrostatic spinning and vacuum drying to obtain the nitrocellulose membrane.
3. The method for preparing an electrospun superhydrophobic film according to claim 2, wherein the mass concentration of the nitrocellulose spinning solution is 16-36%;
each 14mL of the nitrocellulose spinning solution contains 2-6g of nitrocellulose, 8-12mL of high-volatility polar organic solvent and 2-6mL of high-conductivity polar solvent.
4. The method for preparing an electrospun superhydrophobic film according to claim 2, wherein the polar organic solvent with high volatility is acetone and the polar solvent with high conductivity is N, N-dimethylformamide; the vacuum drying is carried out for 4-24h under the vacuum environment with the temperature not exceeding 40 ℃.
5. The method for preparing an electrospun superhydrophobic film according to claim 1, wherein the method for preparing the aminosilicone solution comprises: dissolving amino silicone oil in one of n-hexane or petroleum ether;
the mass concentration of the amino silicone oil solution is 0.01% -5%.
6. The method for preparing an electrospun superhydrophobic film according to claim 1, wherein the method for preparing the gas phase particle solution comprises: dissolving the gas phase particles in one of n-hexane or petroleum ether;
the mass concentration of the gas phase particle solution is 0.01% -1%.
7. The method for producing an electrospun superhydrophobic film according to claim 6, wherein the gas phase particles are gas phase SiO 2 And (3) nanoparticles.
8. An electrospun superhydrophobic film prepared by the method of any one of claims 1-7, wherein the electrospun superhydrophobic film has a contact angle for water of greater than 150 °.
9. The use of the electrospun superhydrophobic film of claim 8 in oil-water separation.
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| CN109731479A (en) * | 2018-12-19 | 2019-05-10 | 南京林业大学 | A kind of preparation method and super-hydrophobic nano tunica fibrosa of super-hydrophobic nano tunica fibrosa |
| CN114307696A (en) * | 2021-12-30 | 2022-04-12 | 浙江正益生物科技有限公司 | Oleophobic hybrid silica oil-water separation membrane and preparation method thereof |
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| CN109731479A (en) * | 2018-12-19 | 2019-05-10 | 南京林业大学 | A kind of preparation method and super-hydrophobic nano tunica fibrosa of super-hydrophobic nano tunica fibrosa |
| CN114307696A (en) * | 2021-12-30 | 2022-04-12 | 浙江正益生物科技有限公司 | Oleophobic hybrid silica oil-water separation membrane and preparation method thereof |
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