CN112522856A - Metal organic framework and electrospun nanofiber composite protective cover film and preparation - Google Patents

Metal organic framework and electrospun nanofiber composite protective cover film and preparation Download PDF

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CN112522856A
CN112522856A CN202011389349.0A CN202011389349A CN112522856A CN 112522856 A CN112522856 A CN 112522856A CN 202011389349 A CN202011389349 A CN 202011389349A CN 112522856 A CN112522856 A CN 112522856A
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polymer
organic framework
metal organic
protective cover
electrospun nanofiber
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王娇娜
邓慧杰
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Beijing Institute of Clothing Technology
Beijing Institute Fashion Technology
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Beijing Institute of Clothing Technology
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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
    • D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/10—Other agents for modifying properties
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/10—Other agents for modifying properties
    • D01F1/106—Radiation shielding agents, e.g. absorbing, reflecting agents
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
    • D01F6/54—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polymers of unsaturated nitriles
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
    • D01F6/56—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polymers of cyclic compounds with one carbon-to-carbon double bond in the side chain
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
    • D01F6/94—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of other polycondensation products
    • 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
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B3/00—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating
    • D06B3/10—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics
    • 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
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/144—Alcohols; Metal alcoholates
    • 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
    • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/16—Synthetic fibres, other than mineral fibres
    • D06M2101/18—Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • 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
    • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/16—Synthetic fibres, other than mineral fibres
    • D06M2101/18—Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M2101/26—Polymers or copolymers of unsaturated carboxylic acids or derivatives thereof
    • D06M2101/28—Acrylonitrile; Methacrylonitrile
    • 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
    • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/16—Synthetic fibres, other than mineral fibres
    • D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M2101/38—Polyurethanes

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Artificial Filaments (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

The invention relates to a metal organic framework and electrospun nanofiber composite protective cover film and preparation, belonging to the technical field of outdoor protection of children; the method comprises the following steps: (1) preparing a spinning solution of a metal organic framework and a polymer A; (2) preparing a spinning solution of a polymer B containing titanium dioxide; (3) the titanium dioxide @ metal organic framework and the polymer @ polymer nanofiber interwoven by the thick and thin fibers are prepared from a polymer electrospun fiber membrane; (4) preparing a metal organic framework and an electrospun nanofiber composite protective cover membrane. The metal organic framework and the electrospun nanofiber composite protective cover are coated, so that the adsorption effect of the material on pollutants such as haze and the like in air is improved, and the mechanical property and the ultraviolet ray interception effect of the material are further improved. The invention has good film forming property, good mechanical property, simple and easy preparation process and wide application prospect in the field of child protection.

Description

Metal organic framework and electrospun nanofiber composite protective cover film and preparation
Technical Field
The invention relates to a metal organic framework and electrospun nanofiber composite protective cover film and preparation thereof, in particular to a detachable haze-proof, breathable, waterproof and sun-proof Metal Organic Framework (MOFs)/electrospun nanofiber-based protective cover film for an outdoor stroller; belongs to the technical field of outdoor protective materials for children.
Background
Metal-Organic Frameworks (MOFs) are a very rapidly developing class of porous materials, which are formed by self-assembly of inorganic Metal ions (or clusters) and Organic ligands through coordination bonds. The MOFs not only has larger specific surface area and extremely high porosity, but also has various types and compositions, abundant structures and adjustable functions, and the advantages enable the MOFs material to have great application potential in the fields of gas storage and separation, heterogeneous catalysis, sensing, drug release, environmental treatment and the like.
Electrospinning is a top-down assembly process and also an efficient method of preparing stable, continuous fiber materials. The preparation process is simple, the raw materials are wide, the cost is low, and the fiber can be continuously prepared. As a mature technique for preparing a fiber structure in polymer engineering, an electrospinning technique has been widely applied to the preparation of functional and advanced nanofiber reinforcement.
Therefore, the technical problem to be solved in the technical field is to provide a metal organic framework and an electrospun nanofiber composite protective cover coating which can increase the adsorption effect of the material on pollutants such as haze in air and can further improve the mechanical property of the material and the interception effect on ultraviolet rays.
Disclosure of Invention
One of the purposes of the invention is to overcome the defects of the traditional child outdoor stroller protective cover and provide a metal organic framework and an electrospun nanofiber composite protective cover coating which can increase the adsorption effect of the material on pollutants such as haze and the like in air and can further improve the mechanical property and the ultraviolet interception effect of the material.
The above object of the present invention is achieved by the following technical solutions:
a metal organic framework and electrospun nanofiber composite protective cover film is prepared from the following raw materials of titanium dioxide, a metal organic framework, a polymer A, a polymer B, a solvent A, a solvent B and a dispersing agent; preparing spinning solution of the metal organic framework and the polymer A by using the metal organic framework, the polymer A and the solvent A; preparing a spinning solution of titanium dioxide and polymer B from the titanium dioxide, the polymer B, a dispersing agent and a solvent B; preparing the metal organic framework and the electrospun nanofiber composite protective cover film by using the spinning solution of the metal organic framework and the polymer A and the spinning solution of the titanium dioxide and the polymer B.
Preferably, the spinning solution of the metal organic framework and the polymer A comprises 1 wt% -40 wt% of the metal organic framework, 9 wt% -21 wt% of the polymer A and the solvent A.
Preferably, the spinning solution of titanium dioxide and polymer B is prepared from the titanium dioxide, polymer B, a dispersing agent and a solvent B, wherein the mass percent of the titanium dioxide is 1.0-3.0 wt%, the mass percent of the polymer B is 9-21 wt%, the mass percent of the dispersing agent is 10-20 wt%, and the balance is the solvent B.
Preferably, the Metal-Organic framework is one or a mixture of several of IRMOFs (interferometric Metal-Organic Frameworks) series, MIL (materials of Institute Lavoiser) series, ZIFs (Zeolite Imidazolate Frameworks) series, UiO (university of Oslo) series or PCN (cavities Coordination network) series in any proportion.
Preferably, the titanium dioxide is in the rutile form with a particle size distribution of 30nm to 100 nm.
Preferably, the solvent A is a solution of one or a mixture of several of N, N-dimethylformamide, tetrahydrofuran, trifluoroacetic acid, dichloromethane, trichloromethane, N-methylpyrrolidone, N-dimethylacetamide and toluene in any proportion.
Preferably, the polymer A is one or a mixture of more of polyacrylonitrile, thermoplastic polyurethane, polyamide, polyethylene terephthalate, polyether sulfone, polyvinylidene fluoride, chitosan, polyoxyethylene, polycaprolactone, polylactic acid, polyvinylpyrrolidone, cellulose acetate, polystyrene, polyvinyl alcohol or polysulfone in any proportion.
Preferably, the solvent B is a mixture of tetrahydrofuran and N, N-dimethylformamide.
Preferably, the polymer B is one or a mixture of more of polyacrylonitrile, thermoplastic polyurethane, polyamide, polyethylene terephthalate, polyether sulfone, polyvinylidene fluoride, chitosan, polyoxyethylene, polycaprolactone, polylactic acid, polyvinylpyrrolidone, cellulose acetate, polystyrene, polyvinyl alcohol or polysulfone in any proportion.
Preferably, the dispersant is polyethylene glycol (PEG).
Preferably, the solvent B is a mixture of solvents with the volume ratio of 1: 1 of tetrahydrofuran and N, N-dimethylformamide.
Preferably, the fiber diameter of the metal organic framework and the coating of the electrospun nanofiber composite protective cover is less than or equal to 1000nm, the air filtration efficiency is greater than or equal to 95%, and the sun protection index is UPF 50.
The invention also aims to provide a preparation method of the metal organic framework and the electrospun nanofiber composite protective cover film.
The above object of the present invention is achieved by the following technical solutions:
a preparation method of a metal organic framework and electrospun nanofiber composite protective cover film comprises the following steps:
(1) dissolving a metal organic framework in a solvent A, performing ultrasonic dispersion, then adding a polymer A, and performing magnetic stirring at room temperature until a uniform spinning solution is formed, so as to obtain the spinning solution of the metal organic framework and the polymer A;
(2) dispersing nano-scale titanium dioxide containing a dispersing agent in a solvent B, performing ultrasonic dispersion, then adding a polymer B, and stirring until the polymer B is completely dissolved to obtain a spinning solution of the polymer B containing titanium dioxide;
(3) respectively injecting the spinning solution of the metal organic framework and the polymer A prepared in the step (1) and the spinning solution of the polymer B containing titanium dioxide prepared in the step (2) into spinning pipes, and carrying out electrostatic spinning under the same spinning condition to obtain a polymer electrospun fiber membrane for the titanium dioxide @ metal organic framework and the polymer @ polymer nanofiber interwoven by the thick and thin fibers;
(4) and (4) activating and drying the product obtained in the step (3) to obtain the composite electrospun nanofiber doped with the metal-organic framework (namely the metal-organic framework and the electrospun nanofiber composite protective cover film).
Preferably, in step (1), the mass percentage of the polymer A is 9 to 21 wt%.
Preferably, in the step (1), the mass percentage of the metal organic framework is 1 wt% to 40 wt%.
Preferably, in the step (1), the solvent A is a solution of one or a mixture of several of N, N-dimethylformamide, tetrahydrofuran, trifluoroacetic acid, dichloromethane, trichloromethane, N-methylpyrrolidone, N-dimethylacetamide and toluene in any proportion.
Preferably, in step (1), the polymer a is one or more of polyacrylonitrile, thermoplastic polyurethane, polyamide, polyethylene terephthalate, polyethersulfone, polyvinylidene fluoride, chitosan, polyoxyethylene, polycaprolactone, polylactic acid, polyvinylpyrrolidone, cellulose acetate, polystyrene, polyvinyl alcohol or polysulfone in any proportion.
Preferably, in step (2), the mass percentage of the polymer B is 9 to 21 wt%.
Preferably, in the step (2), the mass percent of the titanium dioxide is 1.0 wt% to 3.0 wt%.
Preferably, in the step (2), the mass percent of the dispersing agent is 10-20 wt%.
Preferably, in the step (2), the polymer B is one or more of polyacrylonitrile, thermoplastic polyurethane, polyamide, polyethylene terephthalate, polyethersulfone, polyvinylidene fluoride, chitosan, polyoxyethylene, polycaprolactone, polylactic acid, polyvinylpyrrolidone, cellulose acetate, polystyrene, polyvinyl alcohol or polysulfone in any proportion.
Preferably, in step (2), the polymer a is the same as the polymer B in step (1).
Preferably, in step (2), the polymer A is different from the polymer B in step (1).
Preferably, in the step (2), the nano-sized titanium dioxide is in a rutile type, and the particle size distribution is 30nm-100 nm.
Preferably, in step (2), the dispersing agent is polyethylene glycol (PEG).
Preferably, in the step (2), the solvent B is a mixture of tetrahydrofuran and N, N-dimethylformamide.
Preferably, in the step (2), the solvent B is a mixture of solvents in a volume ratio of 1: 1 of tetrahydrofuran and N, N-dimethylformamide.
Preferably, in the step (4), the activation treatment refers to vacuum heating treatment after soaking in ethanol solution for 12-36 hours.
Preferably, in the step (4), the fiber diameter of the composite electrospun nanofiber doped with the metal organic framework is less than or equal to 1000nm, the air filtration efficiency is greater than or equal to 95%, and the sun protection index is UPF 50.
Still another object of the present invention is to provide the use of the above metal organic framework and electrospun nanofiber composite protective cover coating.
The above object of the present invention is achieved by the following technical solutions:
the application of the metal organic framework and the electrospun nanofiber composite protective cover film in the protection of the outdoor stroller for the children comprises a polyester material layer, the metal organic framework, the electrospun nanofiber composite protective cover film and a non-woven fabric support layer, wherein the structure of the metal organic framework and the electrospun nanofiber composite protective cover film is a sandwich structure, and the non-woven fabric support layer, the metal organic framework, the electrospun nanofiber composite protective cover film and the polyester material layer are sequentially arranged.
Preferably, the non-woven fabric support layer is polypropylene, polyethylene terephthalate, paper or glass fiber.
Has the advantages that:
(1) the metal organic framework and the electrospun nanofiber composite protective cover film have the advantages of simple and feasible preparation method and controllable conditions;
(2) according to the invention, MOFs particles are doped in the polymer, so that the filtering performance of the material on haze is improved;
(3) the invention dopes TiO in the polymer2Particles are used for increasing the ultraviolet interception performance of the material;
(4) the invention blends two polymers, combines the advantages of the two polymers and improves the mechanical property of the fiber membrane;
(5) according to the invention, the MOFs/electrospun fiber composite material with waterproof and air-permeable performances can be prepared by improving the preparation process;
(6) the metal organic framework and electrospun nanofiber composite protective cover prepared by the invention is novel in structure and high in stability;
(7) the metal organic framework and the electrospun nanofiber composite protective cover film are easy to prepare controllably, have simple process and are expected to realize industrial production.
The invention is further illustrated by the following figures and detailed description of the invention, which are not meant to limit the scope of the invention.
Drawings
FIG. 1 is a TEM morphology of MOFs in example 1 of the present invention.
FIG. 2 is a TEM morphology of the MOFs/electrospun fiber composite obtained in example 1 of the present invention.
FIG. 3 is a surface micro-topography of the low-power (1000-fold) MOFs/electrospun fiber composite obtained in example 1 of the present invention.
FIG. 4 is a surface micro-topography of the high power (3000 times) MOFs/electrospun fiber composite obtained in example 1 of the invention.
Detailed Description
In the following examples, unless otherwise specified, the starting materials are all conventional starting materials available on the market, the equipment is all conventional in the art, and the methods are all common in the art.
Example 1:
a preparation method of a metal organic framework and electrospun nanofiber composite protective cover film comprises the following steps:
(1) mixing UiO66-NH2(Zr6O4(OH)4(BDC-NH2)12) (0.14g) was dissolved in N, N-dimethylformamide (10.0mL), ultrasonically dispersed, and then Polyacrylonitrile (PAN) (1.29g) was added, and stirred magnetically at room temperature until a uniform dope was formed, to obtain UiO66-NH2@ PAN spinning solution, wherein Polyacrylonitrile (PAN) accounts for 12 wt%, and UiO66-NH2The mass percentage of (B) is 1.3 wt%;
(2) nano-grade titanium dioxide (TiO) containing dispersing agent (polyethylene glycol (PEG), 10 wt%, 1.4g)2) (3 wt%, 0.43g, particle size distribution 30nm-100nm) in a volume ratio of 1: 1, tetrahydrofuran and N, N-dimethylformamide (10.0mL) are subjected to ultrasonic dispersion, Then Polyurethane (TPU) (2.9g) is added and stirred until The Polyurethane (TPU) is completely dissolved, and the polyurethane spinning solution containing titanium dioxide is obtained, wherein the mass percentage of The Polyurethane (TPU) is 20.1 wt%;
(3) the UiO66-NH prepared in the step (1)2@ PAN spinning solution (10.0mL) and the titanium dioxide-containing polyurethane spinning solution (10.0mL) prepared in the step (2) are respectively injected into spinning pipes, and composite electrostatic spinning is carried out under the same conditions (spinning voltage 19kV, spinning distance 15cm, collecting device rotating speed 60rpm) to obtain TiO interwoven with thick and thin fibers2@TPU/UiO66-NH2@ PAN electrospun fibrous membranes;
(4) subjecting the obtained TiO to2@TPU/UiO66-NH2The preparation method comprises the following steps of (1) soaking a @ PAN electrospun fiber membrane in an ethanol solution for 24 hours, taking out the electrospun fiber membrane, and drying the electrospun fiber membrane in an oven for later use; the weight ratio of each component in the obtained product is 43:290:14: 129.
As shown in FIG. 1, TE of MOFs in embodiment 1 of the present inventionM topography; the graph is FEI Tecnai G used220 transmission electron microscope, at magnification 40000 and acceleration voltage 100 kV; FIG. 2 is a TEM morphology of the MOFs/electrospun fiber composite obtained in example 1 of the present invention; using FEI Tecnai G220 transmission electron microscope, under the magnification of 15000 and the accelerating voltage of 100 kV; FIG. 3 is a surface micro-topography of the low-power (1000-fold) MOFs/electrospun fiber composite obtained in example 1 of the present invention; shooting with JSM-7500F scanning electron microscope at magnification of 1000 and acceleration voltage of 5 kV; FIG. 4 is a surface micro-topography of the high power (3000 times) MOFs/electrospun fiber composite obtained in example 1 of the present invention; the image was taken by a JSM-7500F scanning electron microscope at a magnification of 3000 and an accelerating voltage of 5 kV.
Example 2:
a preparation method of a metal organic framework and electrospun nanofiber composite protective cover film comprises the following steps:
(1) mixing MIL-101(Fe) (C)24H12CIFe3O13) (2.67g) dissolved in a solvent at a volume ratio of 1: 1, tetrahydrofuran and N, N-dimethylformamide (10.0mL), ultrasonically dispersing, then adding 2.90g of polyurethane (TPU), magnetically stirring at room temperature until a uniform spinning solution is formed, and obtaining an MIL-101(Fe) @ TPU spinning solution, wherein the mass percent of The Polyurethane (TPU) is 19.1 wt%, and the mass percent of the MIL-101(Fe) is 17.6 wt%;
(2) nano TiO with dispersant (polyethylene glycol (PEG), 20 wt%, 3.2g)2(2 wt%, 0.32g, particle size distribution 30nm-100nm) in a volume ratio of 1: 1, tetrahydrofuran and N, N-dimethylformamide (10.0mL) are subjected to ultrasonic dispersion, Then Polyurethane (TPU) (2.90g) is added and stirred until the TPU is completely dissolved, and the polyurethane spinning solution containing titanium dioxide is obtained, wherein the mass percentage of the polyurethane is 18.1 wt%;
(3) respectively injecting MIL-101(Fe) @ TPU spinning solution (10.0mL) prepared in the step (1) and polyurethane spinning solution (10.0mL) containing titanium dioxide prepared in the step (2) into a spinning pipe under the same condition (electro-spinning)Pressing 17kV, spinning distance 13.5cm, collecting device rotating speed 60rpm) to carry out composite electrostatic spinning to obtain coarse and fine fiber interwoven TiO2@ TPU/MIL-101(Fe) @ TPU electrospun fiber membrane;
(4) subjecting the obtained TiO to2Soaking a @ TPU/MIL-101(Fe) @ TPU electrospun fiber membrane in an ethanol solution for 24 hours, taking out the membrane and putting the membrane into an oven for drying for later use; in the obtained product, the weight ratio of each component is 32: 290: 267: 290.
example 3
A preparation method of a metal organic framework and electrospun nanofiber composite protective cover film comprises the following steps:
(1) mixing ZIF-8 (C)8H12N4Dissolving Zn) (2.69g) in N, N-dimethylformamide (10.0mL), performing ultrasonic dispersion, then adding polyacrylonitrile (1.29g), and magnetically stirring at room temperature until a uniform spinning solution is formed, so as to obtain a ZIF-8@ Polyacrylonitrile (PAN) spinning solution, wherein the mass percent of Polyacrylonitrile (PAN) is 11 wt%, and the mass percent of ZIF-8 is 22.3 wt%;
(2) nano TiO with dispersant (polyethylene glycol (PEG), 20 wt%, 3.2g)2(3 wt%, 0.49g, particle size distribution 30nm-100nm) in a volume ratio of 1: 1, tetrahydrofuran and N, N-dimethylformamide (10.0mL) are subjected to ultrasonic dispersion, Then Polyurethane (TPU) (2.90g) is added and stirred until the TPU is completely dissolved, and the polyurethane spinning solution containing titanium dioxide is obtained, wherein the mass percentage of the polyurethane is 18 wt%;
(3) respectively injecting the ZIF-8@ PAN spinning solution (10.0mL) prepared in the step (1) and the titanium dioxide-containing polyurethane spinning solution (10.0mL) prepared in the step (2) into spinning pipes, and carrying out composite electrostatic spinning under the same conditions (spinning voltage of 17kV, spinning distance of 13.5cm and collection device rotating speed of 60rpm) to obtain TiO interwoven with thick and thin fibers2@ TPU/ZIF-8@ PAN electrospun fiber membrane;
(4) subjecting the obtained TiO to2Soaking the @ TPU/ZIF-8@ PAN electrospun fiber membrane in an ethanol solution for 24 hours, taking out, and drying in an oven for later use; in the obtained product, the weight ratio of each component is 49: 290: 269: 129.
example 4
A preparation method of a metal organic framework and electrospun nanofiber composite protective cover film comprises the following steps:
(1) mixing Mg-MOF-74 (C)14H16N2O8Zn2) (0.48g) is dissolved in N, N-dimethylformamide (10.0mL), ultrasonic dispersion is carried out, then Polystyrene (PS) (1.90g) is added, magnetic stirring is carried out at room temperature until uniform spinning solution is formed, and Mg-MOF-74@ PS spinning solution is obtained, wherein the mass percent of the polystyrene is 16 wt%, and the mass percent of the Mg-MOF-74 is 4 wt%;
(2) nano TiO with dispersant (polyethylene glycol (PEG), 20 wt%, 3.2g)2(2 wt%, 0.32g, particle size distribution 30nm-100nm) in a volume ratio of 1: 1, tetrahydrofuran and N, N-dimethylformamide (10.0mL) are subjected to ultrasonic dispersion, Then Polyurethane (TPU) (2.90g) is added and stirred until the TPU is completely dissolved, and the polyurethane spinning solution containing titanium dioxide is obtained, wherein the mass percentage of the polyurethane is 18.1 wt%;
(3) respectively injecting the Mg-MOF-74@ PS spinning solution (10.0mL) prepared in the step (1) and the polyurethane spinning solution (10.0mL) containing titanium dioxide prepared in the step (2) into spinning pipes, and carrying out composite electrostatic spinning under the same conditions (the spinning voltage is 18kV, the spinning distance is 15cm, and the rotating speed of a collecting device is 60rpm) to obtain TiO interwoven with thick and thin fibers2@ TPU/Mg-MOF-74@ PS electrospun fiber membrane;
(4) subjecting the obtained TiO to2Soaking the @ TPU/Mg-MOF-74@ PS electrospun fiber membrane in an ethanol solution for 24 hours, taking out the membrane, and drying the membrane in an oven for later use; in the obtained product, the weight ratio of each component is 32: 290: 48: 190.
example 5
A preparation method of a metal organic framework and electrospun nanofiber composite protective cover film comprises the following steps:
(1) MOF-199 (C)18H9O15Cu3) (0.32g) was dissolved in N, N-dimethylformamide (10.0mL) and ultrasonically dispersed, and Polyacrylonitrile (PAN) (1.29g) was added thereto, followed by magnetic field application at room temperatureStirring the mixture until a uniform spinning solution is formed to obtain an MOF-199@ PAN spinning solution, wherein the mass percent of polyacrylonitrile is 12 wt%, and the mass percent of MOF-199 is 3 wt%;
(2) nano TiO with dispersant (polyethylene glycol (PEG), 10 wt%, 1.4g)2(1 wt%, 0.14g, particle size distribution 30nm-100nm) in a volume ratio of 1: 1, tetrahydrofuran and N, N-dimethylformamide (10.0mL) are subjected to ultrasonic dispersion, Then Polyurethane (TPU) (2.90g) is added and stirred until the TPU is completely dissolved, and the polyurethane spinning solution containing titanium dioxide is obtained, wherein the mass percentage of the polyurethane is 20.6 wt%;
(3) respectively injecting the MOF-199@ PAN spinning solution (10.0mL) prepared in the step (1) and the polyurethane spinning solution (10.0mL) containing titanium dioxide prepared in the step (2) into spinning pipes, and carrying out composite electrostatic spinning under the same conditions (the spinning voltage is 19kV, the spinning distance is 15cm, and the rotating speed of a collecting device is 60rpm) to obtain TiO2@ TPU/MOF-199@ PAN electrospun fiber membrane;
(4) subjecting the obtained TiO to2Soaking the @ TPU/MOF-199@ PAN electrospun fiber membrane in an ethanol solution for 24 hours, taking out, and drying in an oven for later use; in the obtained product, the weight ratio of each component is 14: 290: 32: 129.
example 6
A preparation method of a metal organic framework and electrospun nanofiber composite protective cover film comprises the following steps:
(1) mixing UiO66-NH2(Zr6O4(OH)4(BDC-NH2)12) (7.2g) was dissolved in N, N-dimethylformamide (10.0mL) and dispersed by sonication, then Polystyrene (PS) (1.80g) was added and stirred magnetically at room temperature until a homogeneous spinning dope was formed, giving UiO66-NH2@ PS spinning solution, wherein the mass percent of polystyrene is 9.7 wt%, UiO66-NH2The mass percentage of (B) is 39 wt%;
(2) nano TiO with dispersant (polyethylene glycol (PEG), 10 wt%, 1.4g)2(1 wt%, 0.14g, particle size distribution 30nm-100nm) in a volume ratio of 1: 1 to fourHydrogen furan and N, N-dimethylformamide (10.0mL) are subjected to ultrasonic dispersion, Then Polyurethane (TPU) (2.90g) is added and stirred until the TPU is completely dissolved, and the polyurethane spinning solution containing titanium dioxide is obtained, wherein the mass percentage of the polyurethane is 20.6 wt%;
(3) the UiO66-NH prepared in the step (1)2Respectively injecting the @ PS spinning solution (10.0mL) and the titanium dioxide-containing polyurethane spinning solution (10.0mL) prepared in the step (2) into spinning pipes, and carrying out composite electrostatic spinning under the same conditions (the spinning voltage is 18kV, the spinning distance is 15cm, and the rotating speed of a collecting device is 60rpm) to obtain TiO with a double-chain structure2@TPU/UiO66-NH2@ PS electrospun fibrous membranes;
(4) subjecting the obtained TiO to2@TPU/UiO66-NH2Soaking the @ PS electrospun fiber membrane in an ethanol solution for 24 hours, taking out, and drying in an oven for later use; in the obtained product, the weight ratio of each component is 14: 290: 720: 180.
application examples
The metal organic framework and the electrospun nanofiber composite protective cover film prepared in the embodiment 1 are used for preparing a protective cover of an outdoor stroller for a child, the protective cover film material of the outdoor stroller for the child comprises a polyester material, the metal organic framework for haze prevention and ultraviolet prevention, the electrospun nanofiber composite protective cover film and a non-woven fabric with a supporting effect, and the method comprises the following steps: the non-woven fabric is attached to a receiving roller, the non-woven fabric is used as a substrate, the metal organic framework and the electrospun nanofiber composite protective cover film are received on the non-woven fabric, and then a layer of polyester material is compounded on the metal organic framework and the electrospun nanofiber composite protective cover film based on the non-woven fabric in a hot pressing mode.
The invention provides a metal organic framework and electrospun nanofiber composite protective cover film for the first time, the polymer electrospun nanofiber film is prepared by utilizing an electrostatic spinning technology, MOFs particles are added into a polymer spinning solution in order to increase the adsorption effect of materials on pollutants such as haze and the like in air, and in addition, TiO is doped in blending during the preparation of MOFs electrospun nanofiber2The polyurethane fiber further improves the mechanical property of the material and the interception effect on ultraviolet rays. Metal organic frameworks of the inventionAnd the film-forming property of the electrospun nanofiber composite protective cover is good, the mechanical property is good, the preparation process is simple and easy to implement, and the electrospun nanofiber composite protective cover has a wide application prospect in the field of child protection.
The metal organic framework and electrospun nanofiber composite protective cover film is in a regular or necklace structure irregular shape, mainly plays a role in intercepting air pollutants and shielding ultraviolet rays, and has water resistance and air permeability.

Claims (10)

1. A metal organic framework and electrospun nanofiber composite protective cover film is prepared from the following raw materials of titanium dioxide, a metal organic framework, a polymer A, a polymer B, a solvent A, a solvent B and a dispersing agent; preparing spinning solution of the metal organic framework and the polymer A by using the metal organic framework, the polymer A and the solvent A; preparing a spinning solution of titanium dioxide and polymer B from the titanium dioxide, the polymer B, a dispersing agent and a solvent B; preparing the metal organic framework and the electrospun nanofiber composite protective cover film by using the spinning solution of the metal organic framework and the polymer A and the spinning solution of the titanium dioxide and the polymer B.
2. The metal organic framework and electrospun nanofiber composite protective cover film according to claim 1, wherein: the spinning solution of the metal organic framework and the polymer A comprises 1-40 wt% of the metal organic framework, 9-21 wt% of the polymer A and the solvent A; the spinning solution of the titanium dioxide and the polymer B comprises 1.0-3.0 wt% of the titanium dioxide, 9-21 wt% of the polymer B, 10-20 wt% of a dispersing agent and the balance of a solvent B.
3. The metal organic framework and electrospun nanofiber composite protective cover film according to claim 2, wherein: the metal organic framework is one or a mixture of several of IRMOFs series, ZIFs series, UiO series or PCN series in any proportion.
4. The metal organic framework and electrospun nanofiber composite protective cover film according to claim 3, wherein: the titanium dioxide is in a rutile type, and the particle size distribution is 30nm-100 nm.
5. The metal organic framework and electrospun nanofiber composite protective cover film according to claim 1, wherein: the solvent A is a solution of one or a mixture of more of N, N-dimethylformamide, tetrahydrofuran, trifluoroacetic acid, dichloromethane, trichloromethane, N-methylpyrrolidone, N-dimethylacetamide and toluene in any proportion; the polymer A is one or a mixture of more of polyacrylonitrile, thermoplastic polyurethane, polyamide, polyethylene terephthalate, polyether sulfone, polyvinylidene fluoride, chitosan, polyoxyethylene, polycaprolactone, polylactic acid, polyvinylpyrrolidone, cellulose acetate, polystyrene, polyvinyl alcohol or polysulfone in any proportion; the solvent B is a mixture of tetrahydrofuran and N, N-dimethylformamide; the polymer B is one or a mixture of more of polyacrylonitrile, thermoplastic polyurethane, polyamide, polyethylene terephthalate, polyether sulfone, polyvinylidene fluoride, chitosan, polyoxyethylene, polycaprolactone, polylactic acid, polyvinylpyrrolidone, cellulose acetate, polystyrene, polyvinyl alcohol or polysulfone in any proportion; the dispersing agent is polyethylene glycol.
6. The metal organic framework and electrospun nanofiber composite protective cover film according to claim 5, wherein: the solvent B is a mixture of 1: 1 of tetrahydrofuran and N, N-dimethylformamide.
7. A preparation method of a metal organic framework and electrospun nanofiber composite protective cover film comprises the following steps:
(1) dissolving a metal organic framework in a solvent A, performing ultrasonic dispersion, then adding a polymer A, and performing magnetic stirring at room temperature until a uniform spinning solution is formed, so as to obtain the spinning solution of the metal organic framework and the polymer A;
(2) dispersing nano-scale titanium dioxide containing a dispersing agent in a solvent B, performing ultrasonic dispersion, then adding a polymer B, and stirring until the polymer B is completely dissolved to obtain a spinning solution of the polymer B containing titanium dioxide;
(3) respectively injecting the spinning solution of the metal organic framework and the polymer A prepared in the step (1) and the spinning solution of the polymer B containing titanium dioxide prepared in the step (2) into spinning pipes, and carrying out electrostatic spinning under the same spinning condition to obtain a polymer electrospun fiber membrane for the titanium dioxide @ metal organic framework and the polymer @ polymer nanofiber interwoven by the thick and thin fibers;
(4) and (4) activating and drying the product obtained in the step (3) to obtain the composite electrospun nanofiber doped with the metal-organic framework (namely the metal-organic framework and the electrospun nanofiber composite protective cover film).
8. The method of claim 7, wherein the metal organic framework and electrospun nanofiber composite protective cover film is prepared by the following steps: in the step (1), the mass percent of the polymer A is 9-21 wt%; the mass percentage of the metal organic framework is 1 wt% -40 wt%; the solvent A is a solution of one or a mixture of more of N, N-dimethylformamide, tetrahydrofuran, trifluoroacetic acid, dichloromethane, trichloromethane, N-methylpyrrolidone, N-dimethylacetamide and toluene in any proportion; the polymer A is one or a mixture of more of polyacrylonitrile, thermoplastic polyurethane, polyamide, polyethylene terephthalate, polyether sulfone, polyvinylidene fluoride, chitosan, polyoxyethylene, polycaprolactone, polylactic acid, polyvinylpyrrolidone, cellulose acetate, polystyrene, polyvinyl alcohol or polysulfone in any proportion.
9. The method of claim 8, wherein the metal organic framework and electrospun nanofiber composite protective cover film is prepared by the following steps: in the step (2), the mass percent of the polymer B is 9-21 wt%; the mass percent of the titanium dioxide is 1.0 to 3.0 weight percent; the mass percent of the dispersant is 10 wt% -20 wt%; the polymer B is one or a mixture of more of polyacrylonitrile, thermoplastic polyurethane, polyamide, polyethylene terephthalate, polyether sulfone, polyvinylidene fluoride, chitosan, polyoxyethylene, polycaprolactone, polylactic acid, polyvinylpyrrolidone, cellulose acetate, polystyrene, polyvinyl alcohol or polysulfone in any proportion; the nano-scale titanium dioxide is in a rutile type, and the particle size distribution is 30nm-100 nm; the dispersing agent is polyethylene glycol; the solvent B is a mixture of 1: 1 of tetrahydrofuran and N, N-dimethylformamide; in the step (4), the activation treatment refers to vacuum heating treatment after soaking in an ethanol solution for 12-36 hours; in the step (4), the fiber diameter of the composite electrospun nanofiber doped with the metal organic framework is less than or equal to 1000nm, the air filtration efficiency is greater than or equal to 95%, and the sun protection index is UPF 50.
10. Use of a metal organic framework and an electrospun nanofiber composite protective cover membrane according to any one of claims 1 to 6 for the protection of a child's outdoor stroller comprising a polyester material layer, a metal organic framework and an electrospun nanofiber composite protective cover membrane and a non-woven fabric support layer, wherein the structures are a sandwich structure comprising, in order, the non-woven fabric support layer, the metal organic framework and the electrospun nanofiber composite protective cover membrane and the polyester material layer; the non-woven fabric supporting layer is made of polypropylene, polyethylene terephthalate, paper or glass fiber.
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