CN109675444A - A kind of preparation method of the underwater superoleophobic oil-water separation mesh film based on tannic acid modification - Google Patents

A kind of preparation method of the underwater superoleophobic oil-water separation mesh film based on tannic acid modification Download PDF

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CN109675444A
CN109675444A CN201910109567.5A CN201910109567A CN109675444A CN 109675444 A CN109675444 A CN 109675444A CN 201910109567 A CN201910109567 A CN 201910109567A CN 109675444 A CN109675444 A CN 109675444A
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tannic acid
oil
water separation
mesh film
water
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CN109675444B (en
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彭新艳
刘云鸿
刘云晖
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D71/00Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06Organic material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D17/00Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/08Thickening liquid suspensions by filtration
    • B01D17/085Thickening liquid suspensions by filtration with membranes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D67/00Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0079Manufacture of membranes comprising organic and inorganic components
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D69/00Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/02Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2325/00Details relating to properties of membranes
    • B01D2325/38Hydrophobic membranes

Abstract

The invention discloses a kind of preparation methods of underwater superoleophobic oil-water separation mesh film based on tannic acid modification.The preparation method is surface modified fiber web material using tannic acid, and then by connecting bionical zwitterionic compound substance on fiber web material surface with the catechol group of tannic acid and its reacting for deriveding group, to realize the preparation of super hydrophilic/underwater superoleophobic oil-water separation mesh film, its preparation process is simple, preparation cost is low, is suitble to industrialized production.Raw material of the invention is easy to get, is from a wealth of sources.The oil-water separation mesh film of obtained super-hydrophobic super-oleophylic there is preferable selectivity to penetrate water, and processing cost is low, easy to operate, recyclable to be used for multiple times.

Description

A kind of preparation of the underwater superoleophobic oil-water separation mesh film based on tannic acid modification Method
Technical field
The present invention relates to a kind of preparation methods of oil-water separation mesh film, and in particular to a kind of based on the underwater of tannic acid modification The preparation method of superoleophobic oil-water separation mesh film.
Background technique
With a large amount of discharges of oily wastewater in production and living and taking place frequently for Crude Oil at Sea leakage accident, oily pollution in water Have become the significant problem for endangering human health and Environmental security.In order to safeguard the health of good ecological environment and the mankind, protect Limited water resource is protected, oily wastewater body is effectively separated and has become problem urgently to be resolved.Currently, administering toxic organic The method of water pollution caused by solvent or oil product are revealed has very much, and traditional oil-water separation method includes Gravity Separation, skims Oil, centrifugation and flotation etc., have preferable effect to water-oil separating, but can be confined to lower separative efficiency, higher energy consumption, work Skill is complicated and be easy to cause secondary pollution problems.In recent years, with the fast development of nanotechnology and bionical science, people There is the understanding of systematization to the relationship of surface of solids microstructure and wetability, the functional material based on super wetting characteristics is oil Water separation specifies new direction and resolving ideas.Based on the separation material of super wetting characteristics characteristic, can divide to effective selectivity From You Heshui, the purpose of water-oil separating is realized.
Currently, the oil-water separation mesh film with super hydrophilic/underwater superoleophobic characteristic is in water-oil separating field it has been reported that tool There is the oil-water separation mesh film of super hydrophilic/underwater superoleophobic characteristic that there can be the oil-water separation of effective realization " cross water and cut oil ". Based on the zwitterionic materials of artificial cell film, there is preferable hydrophilic and oleophobic property, and there is preferable anti-pollution characteristic under water, It is gradually of interest by researcher person.It in recent years, is the bionical mussel chemistry represented as material table circle using the oxidation autohemagglutination of dopamine The development of face science and technology is filled with huge vigor, is extensively studied surface and interface modification and functionalization for material. Had in water-oil separating material field based on modified super hydrophilic/underwater superoleophobic bionic functional surface in dopamine surface Document and patent report, but still preparation process it is cumbersome, it is at high cost, be not suitable for the problems such as industrialized production and application.
Summary of the invention
The purpose of the present invention is to overcome the shortcomings of the existing technology and insufficient, is further changed to material surface modification Into providing a kind of preparation method of super hydrophilic/underwater superoleophobic oil-water separation mesh film based on tannic acid modification.Using natural Polyphenol substance (tannic acid) carries out appropriate surface preparation modification to fiber web material surface and retains reactivity, and then by non- The modes such as covalent effect or covalent bond reaction, such as hydrogen bond action and electrostatic interaction, catechol group and its deriveding group and other Reaction between group (amino etc.) connects bionical zwitterionic compound substance on fiber web material surface, to realize super close The preparation of water/underwater superoleophobic oil-water separation mesh film.
The purpose of the invention is achieved by the following technical solution:
A kind of preparation method of the underwater superoleophobic oil-water separation mesh film based on tannic acid modification, includes the following steps:
(1) it is dried after cleaning up fabric web, it is spare;
(2) tannic acid is dissolved in solvent A, adjusts pH to 7.1 ~ 9.0, obtains tannic acid solution;In the tannic acid solution, The mass percentage of tannic acid is 0.1 ~ 20%;
Iron chloride is dissolved in solvent A, ferric ion solutions are obtained;In the ferric ion solutions, the quality percentage of iron ion contains Amount is 0.01 ~ 10%;
By N, N- dimethyl -1,3- diaminopropanes is dissolved in solvent A, obtains tertiary-amine modified solution;It is described tertiary-amine modified molten In liquid, the mass percentage of N- dimethyl -1,3- diaminopropanes is 0.01 ~ 20%;
Quaternary ammonium reagent is dissolved in solvent A, bisexual ion purification modified solution is obtained;The bisexual ion purification modified solution In, the mass percentage of quaternary ammonium reagent is 0.01 ~ 20%;
Wherein, the solvent A is at least one of water, ethyl alcohol, methanol, isopropanol, n-butanol;The quaternary ammonium reagent is 1,3- At least one of propane sultone, 1,4- butane sultone, beta-propiolactone, gamma-butyrolacton, acrylic acid;
(3) fabric web after drying is soaked in tannic acid solution, after impregnating 1 second ~ 24 hours, taking-up is dried;Then it impregnates In ferric ion solutions, after impregnating 1 second ~ 1 hour, taking-up is dried;This process repeats at least 1 time;At 50 ~ 100 DEG C after taking-up It is 0.5 ~ 12 hour dry in drying box, obtain tannic acid modified fabric web;
(4) the tannic acid modified fabric web that step (3) obtains is soaked in tertiary-amine modified solution, it is anti-under the conditions of 30 ~ 80 DEG C It answers 1 ~ 48 hour, takes out, it is 0.5 ~ 6 hour dry in 50 ~ 100 DEG C of drying boxes, obtain the water-oil separating of the tertiary-aminated modification in surface Nethike embrane.
(5) by the oil-water separation mesh film for the tertiary-aminated modification in surface that step (4) obtains be soaked in bisexual ion purification modification it is molten It in liquid, reacts 1 ~ 24 hour, takes out under the conditions of 20 ~ 60 DEG C, it is 0.5 ~ 12 hour dry in 40 ~ 90 DEG C of drying boxes, obtain base In the underwater superoleophobic oil-water separation mesh film of tannic acid modification.
Further, the fabric web is metal fabric net or non-woven fabric net;The metal fabric net is stainless (steel) wire, copper At least one of net, iron net and aluminium alloy net;The non-woven fabric net is PET non-woven fabric net, PP non-woven fabric net, nylon nonwoven fabrics net At least one;
Further, the mesh number of the fabric web is 30 ~ 400 mesh;
Further, application of the underwater superoleophobic oil-water separation mesh film in water-oil separating based on tannic acid modification.
Compared with the existing technology, the invention has the advantages that and the utility model has the advantages that
1, the present invention is surface modified fiber web material using tannic acid, so by catechol group with tannic acid and its The reaction of deriveding group connects bionical zwitterionic compound substance on fiber web material surface, to realize super hydrophilic/underwater super The preparation of the oil-water separation mesh film of oleophobic, preparation process is simple, and preparation cost is low, is suitble to industrialized production.
2, raw material of the invention is easy to get, is from a wealth of sources.
3, the oil-water separation mesh film of obtained super-hydrophobic super-oleophylic there is preferable selectivity to penetrate water, processing cost It is low, easy to operate, recyclable to be used for multiple times.
Detailed description of the invention
Fig. 1 is the preparation process schematic diagram of oil-water separation mesh film in embodiment 1.
Fig. 2 is the water contact angle photo of oil-water separation mesh film prepared in embodiment 1.
Fig. 3 is the scanning electron microscope sem figure of oil-water separation mesh film prepared in embodiment 1.
Fig. 4 is the oil-water separation schematic diagram of oil-water separation mesh film in embodiment 1.
Specific embodiment
Specific embodiments of the present invention will be described in further detail for son with reference to the accompanying drawings and examples, but this hair Bright embodiment is without being limited thereto.
Embodiment 1
(1) it is dried after cleaning up 400 mesh stainless (steel) wires, it is spare.
(2) tannic acid is dissolved in the water, adjusts pH to 8.3, obtain the tannin that the mass percentage of tannic acid is 3% Acid solution;Iron chloride is dissolved in the water, the ferric ion solutions that the mass percentage of iron ion is 1% are obtained;By N, N- diformazan Base -1,3- diaminopropanes is dissolved in the water, and obtains the uncle that the mass percentage of N- dimethyl -1,3- diaminopropanes is 5% Amine modified solution;1,3-propane sultone is dissolved in methanol, the mass percentage for obtaining 1,3-propane sultone is 2% Bisexual ion purification modified solution.
(3) stainless (steel) wire after drying is soaked in tannic acid solution, after impregnating 10 seconds, taking-up is dried;Then it is soaked in iron In solion, after impregnating 5 seconds, taking-up is dried;This process is repeated 6 times;It is 6 hours dry in 80 DEG C of drying boxes after taking-up, Obtain tannic acid modified fabric web;
(4) the tannic acid modified fabric web that step (3) obtains is soaked in tertiary-amine modified solution, reacts 8 under the conditions of 60 DEG C Hour, it takes out, it is 06 hour dry in 80 DEG C of drying boxes, obtain the oil-water separation mesh film of the tertiary-aminated modification in surface.
(5) by the oil-water separation mesh film for the tertiary-aminated modification in surface that step (4) obtains be soaked in bisexual ion purification modification it is molten It in liquid, reacts 24 hours, takes out under the conditions of 40 DEG C, it is 5 hours dry in 50 DEG C of drying boxes, it obtains based on tannic acid modification Underwater superoleophobic oil-water separation mesh film.
Fig. 1 is the preparation process schematic diagram that the present embodiment prepares oil-water separation mesh film.Fig. 2 is oil prepared by the present embodiment Underwater oil droplet (n-hexane) contact angle photo of moisture off-network film, prepared oil-water separation mesh film has as we can see from the figure Preferable underwater superoleophobic characteristic.Fig. 3 is the scanning electron microscope sem figure of oil-water separation mesh film prepared by the present embodiment.Fig. 4 is this The oil-water separation schematic diagram of embodiment oil-water separation mesh film, embodiment carry out oil using the oil water mixture of n-hexane and water Water separating experiment, the water property of can choose passes through as we can see from the figure, and n-hexane is trapped within above, shows preferable oil Water separating effect;After water-oil separating experiment repeats 50 times, the present embodiment oil-water separation mesh film still keeps excellent water-oil separating Effect.
Embodiment 2
(1) it is dried after cleaning up 300 mesh stainless (steel) wires, it is spare.
(2) tannic acid is dissolved in the water, adjusts pH to 8, obtain the tannic acid that the mass percentage of tannic acid is 4% Solution;Iron chloride is dissolved in the water, the ferric ion solutions that the mass percentage of iron ion is 0.5% are obtained;By N, N- diformazan Base -1,3- diaminopropanes is dissolved in ethyl alcohol, and the mass percentage for obtaining N- dimethyl -1,3- diaminopropanes is 2% Tertiary-amine modified solution;1,3-propane sultone is dissolved in ethyl alcohol, the mass percentage for obtaining 1,3-propane sultone is 2% bisexual ion purification modified solution.
(3) stainless (steel) wire after drying is soaked in tannic acid solution, after impregnating 1 hour, taking-up is dried;Then it is soaked in iron In solion, after impregnating 20 seconds, taking-up is dried;This process is repeated 4 times;It is 6 hours dry in 60 DEG C of drying boxes after taking-up, Obtain tannic acid modified fabric web;
(4) the tannic acid modified fabric web that step (3) obtains is soaked in tertiary-amine modified solution, reacts 38 under the conditions of 60 DEG C Hour, it takes out, it is 6 hours dry in 50 DEG C of drying boxes, obtain the oil-water separation mesh film of the tertiary-aminated modification in surface.
(5) by the oil-water separation mesh film for the tertiary-aminated modification in surface that step (4) obtains be soaked in bisexual ion purification modification it is molten It in liquid, reacts 24 hours, takes out under the conditions of 60 DEG C, it is 6 hours dry in 40 DEG C of drying boxes, it obtains based on tannic acid modification Underwater superoleophobic oil-water separation mesh film.
Embodiment 3
(1) it is dried after cleaning up 100 mesh copper mesh, it is spare.
(2) tannic acid is dissolved in ethyl alcohol, adjusts pH to 9.0, the mass percentage for obtaining tannic acid is 0.1% Tannic acid solution;Iron chloride is dissolved in ethyl alcohol, the ferric ion solutions that the mass percentage of iron ion is 0.01% are obtained; By N, N- dimethyl -1,3- diaminopropanes is dissolved in ethyl alcohol, obtains the quality percentage of N- dimethyl -1,3- diaminopropanes The tertiary-amine modified solution that content is 0.01%;Gamma-butyrolacton is dissolved in ethyl alcohol, the mass percentage of gamma-butyrolacton is obtained For 0.01% bisexual ion purification modified solution.
(3) copper mesh after drying is soaked in tannic acid solution, after impregnating 30 seconds, taking-up is dried;Then it is soaked in iron ion In solution, after impregnating 30 seconds, taking-up is dried;This process is repeated 15 times;It is 0.5 hour dry in 50 DEG C of drying boxes after taking-up, Obtain tannic acid modified fabric web;
(4) the tannic acid modified fabric web that step (3) obtains is soaked in tertiary-amine modified solution, reacts 1 under the conditions of 30 DEG C Hour, it takes out, it is 0.5 hour dry in 50 DEG C of drying boxes, obtain the oil-water separation mesh film of the tertiary-aminated modification in surface.
Embodiment 4
(1) it is dried after cleaning up 200 mesh PET non-woven fabric nets, it is spare.
(2) tannic acid is dissolved in the water, adjusts pH to 9.0, obtain the tannin that the mass percentage of tannic acid is 20% Acid solution;Iron chloride is dissolved in the water, the ferric ion solutions that the mass percentage of iron ion is 10% are obtained;By N, N- bis- Methyl-1,3- diaminopropanes are dissolved in ethyl alcohol, and the mass percentage for obtaining N- dimethyl -1,3- diaminopropanes is 20% tertiary-amine modified solution;Acrylic acid is dissolved in methanol, obtain acrylic acid mass percentage be 20% both sexes from Sonization modified solution.
(3) the PET non-woven fabric net after drying is soaked in tannic acid solution, and after impregnating 1 second hour, taking-up is dried;Then it soaks It steeps in ferric ion solutions, after impregnating 1 second, taking-up is dried;This process is repeated 1 times;It is dry in 50 DEG C of drying boxes after taking-up 0.5 hour, obtain tannic acid modified fabric web;
(4) the tannic acid modified fabric web that step (3) obtains is soaked in tertiary-amine modified solution, reacts 1 under the conditions of 30 DEG C Hour, it takes out, it is 0.5 hour dry in 50 DEG C of drying boxes, obtain the oil-water separation mesh film of the tertiary-aminated modification in surface.
(5) by the oil-water separation mesh film for the tertiary-aminated modification in surface that step (4) obtains be soaked in bisexual ion purification modification it is molten It in liquid, reacts 1 hour, takes out at 20 °C, it is 0.5 hour dry in 40 DEG C of drying boxes, it obtains modifying based on tannic acid Underwater superoleophobic oil-water separation mesh film.
Embodiment 5
(1) it is dried after cleaning up 30 ~ 400 mesh PP non-woven fabric nets, it is spare.
(2) tannic acid is dissolved in the water, adjusts pH to 7.1, obtain the list that the mass percentage of tannic acid is 0.1% Peaceful acid solution;Iron chloride is dissolved in the water, the ferric ion solutions that the mass percentage of iron ion is 0.01% are obtained;By N, N- dimethyl -1,3- diaminopropanes is dissolved in methanol, obtains the mass percentage of N- dimethyl -1,3- diaminopropanes For 0.01% tertiary-amine modified solution;1,3-propane sultone is dissolved in isopropanol, the quality of 1,3-propane sultone is obtained The bisexual ion purification modified solution that percentage composition is 0.01%.
(3) the PP non-woven fabric net after drying is soaked in tannic acid solution, and after impregnating 1 second, taking-up is dried;Then it is soaked in iron In solion, after impregnating 1 second, taking-up is dried;This process is repeated 20 times;Drying 12 is small in 100 DEG C of drying boxes after taking-up When, obtain tannic acid modified fabric web;
(4) the tannic acid modified fabric web that step (3) obtains is soaked in tertiary-amine modified solution, reacts 48 under the conditions of 80 DEG C Hour, it takes out, it is 6 hours dry in 100 DEG C of drying boxes, obtain the oil-water separation mesh film of the tertiary-aminated modification in surface.
(5) by the oil-water separation mesh film for the tertiary-aminated modification in surface that step (4) obtains be soaked in bisexual ion purification modification it is molten It in liquid, reacts 24 hours, takes out under the conditions of 60 DEG C, it is 12 hours dry in 90 DEG C of drying boxes, it obtains modifying based on tannic acid Underwater superoleophobic oil-water separation mesh film.
Embodiment 6
(1) it is dried after cleaning up 30 mesh stainless (steel) wires, it is spare.
(2) tannic acid is dissolved in ethyl alcohol, adjusts pH to 8.0, obtain the list that the mass percentage of tannic acid is 2% Peaceful acid solution;Iron chloride is dissolved in methanol, the ferric ion solutions that the mass percentage of iron ion is 1% are obtained;By N, N- Dimethyl -1,3- diaminopropanes is dissolved in the water, and the mass percentage for obtaining N- dimethyl -1,3- diaminopropanes is 2% Tertiary-amine modified solution;1,3-propane sultone is dissolved in n-butanol, the quality percentage for obtaining 1,3-propane sultone contains The bisexual ion purification modified solution that amount is 2%.
(3) stainless (steel) wire after drying is soaked in tannic acid solution, after impregnating 90 seconds, taking-up is dried;Then it is soaked in iron In solion, after impregnating 5 seconds, taking-up is dried;This process is repeated 5 times;It is 5 hours dry in 80 DEG C of drying boxes after taking-up, Obtain tannic acid modified fabric web;
(4) the tannic acid modified fabric web that step (3) obtains is soaked in tertiary-amine modified solution, reacts 4 under the conditions of 60 DEG C Hour, it takes out, it is 5 hours dry in 60 DEG C of drying boxes, obtain the oil-water separation mesh film of the tertiary-aminated modification in surface.
(5) by the oil-water separation mesh film for the tertiary-aminated modification in surface that step (4) obtains be soaked in bisexual ion purification modification it is molten It in liquid, reacts 24 hours, takes out under the conditions of 4 DEG C, it is 4 hours dry in 60 DEG C of drying boxes, it obtains based on tannic acid modification Underwater superoleophobic oil-water separation mesh film.

Claims (3)

1. a kind of preparation method of the underwater superoleophobic oil-water separation mesh film based on tannic acid modification, which is characterized in that including Following steps:
(1) it is dried after cleaning up fabric web, it is spare;
(2) tannic acid is dissolved in solvent A, adjusts pH to 7.1 ~ 9.0, obtains tannic acid solution;In the tannic acid solution, The mass percentage of tannic acid is 0.1 ~ 20%;
Iron chloride is dissolved in solvent A, ferric ion solutions are obtained;In the ferric ion solutions, the quality percentage of iron ion contains Amount is 0.01 ~ 10%;
By N, N- dimethyl -1,3- diaminopropanes is dissolved in solvent A, obtains tertiary-amine modified solution;It is described tertiary-amine modified molten In liquid, the mass percentage of N- dimethyl -1,3- diaminopropanes is 0.01 ~ 20%;
Quaternary ammonium reagent is dissolved in solvent A, bisexual ion purification modified solution is obtained;The bisexual ion purification modified solution In, the mass percentage of quaternary ammonium reagent is 0.01 ~ 20%;
Wherein, the solvent A is at least one of water, ethyl alcohol, methanol, isopropanol, n-butanol;The quaternary ammonium reagent is 1,3- At least one of propane sultone, 1,4- butane sultone, beta-propiolactone, gamma-butyrolacton, acrylic acid;
(3) fabric web after drying is soaked in tannic acid solution, after impregnating 1 second ~ 24 hours, taking-up is dried;Then it impregnates In ferric ion solutions, after impregnating 1 second ~ 1 hour, taking-up is dried;This process repeats at least 1 time;At 50 ~ 100 DEG C after taking-up It is 0.5 ~ 12 hour dry in drying box, obtain tannic acid modified fabric web;
(4) the tannic acid modified fabric web that step (3) obtains is soaked in tertiary-amine modified solution, it is anti-under the conditions of 30 ~ 80 DEG C It answers 1 ~ 48 hour, takes out, it is 0.5 ~ 6 hour dry in 50 ~ 100 DEG C of drying boxes, obtain the water-oil separating of the tertiary-aminated modification in surface Nethike embrane;
(5) oil-water separation mesh film by the tertiary-aminated modification in surface that step (4) obtains is soaked in bisexual ion purification modified solution, It reacts 1 ~ 24 hour, takes out under the conditions of 20 ~ 60 DEG C, it is 0.5 ~ 12 hour dry in 40 ~ 90 DEG C of drying boxes, it obtains based on tannin The underwater superoleophobic oil-water separation mesh film of acid modification.
2. preparation method according to claim 1, it is characterised in that:
The fabric web is metal fabric net or non-woven fabric net;The metal fabric net is that stainless (steel) wire, copper mesh, iron net and aluminium close At least one of gold net;The non-woven fabric net is at least one of PET non-woven fabric net, PP non-woven fabric net, nylon nonwoven fabrics net;
The mesh number of the fabric web is 30 ~ 400 mesh.
3. the underwater superoleophobic oil-water separation mesh film based on tannic acid modification described in claim 1 ~ 2 is in water-oil separating Using.
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CN112452159A (en) * 2020-11-06 2021-03-09 浙江工业大学 Preparation method of super-hydrophilic-underwater super-oleophobic microfiltration membrane
CN112452159B (en) * 2020-11-06 2022-05-24 浙江工业大学 Preparation method of super-hydrophilic-underwater super-oleophobic microfiltration membrane
CN113019145A (en) * 2021-04-03 2021-06-25 浙江海洋大学 Preparation method of super-wetting oil-water separation membrane
CN113019145B (en) * 2021-04-03 2022-03-22 浙江海洋大学 Preparation method of super-wetting oil-water separation membrane
CN115445246A (en) * 2022-08-24 2022-12-09 电子科技大学 High-performance surface-modified oil-water separation membrane and preparation method and application thereof
CN115445246B (en) * 2022-08-24 2023-10-20 电子科技大学 High-performance surface-modified oil-water separation membrane and preparation method and application thereof

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