CN104878590A - Preparation method of conductive graphene nanofiber membrane - Google Patents

Preparation method of conductive graphene nanofiber membrane Download PDF

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Publication number
CN104878590A
CN104878590A CN201510263754.0A CN201510263754A CN104878590A CN 104878590 A CN104878590 A CN 104878590A CN 201510263754 A CN201510263754 A CN 201510263754A CN 104878590 A CN104878590 A CN 104878590A
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preparation
graphene
fibrous membrane
nano fibrous
conductive nano
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CN201510263754.0A
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冯章启
李家城
赵宾
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Nanjing University of Science and Technology
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Nanjing University of Science and Technology
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Priority to CN201510263754.0A priority Critical patent/CN104878590A/en
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Abstract

The invention discloses a preparation method of a conductive graphene nanofiber membrane. The preparation method comprises the following steps: preparing an electrospinning nanofiber membrane by adopting electrostatic spinning equipment; performing ultrasonication on oxidized graphene by adopting ultrasound equipment and a cell disruption instrument, performing suction filtration on the electrospinning nanofiber membrane, and drying; performing reduction on the prepared conductive oxidized graphene nanofiber membrane by using a reducing agent, and then drying, so as to obtain the conductive graphene nanofiber membrane. According to the preparation method of the conductive graphene nanofiber membrane, provided by the invention, oxidized graphene is used for preparing the conductive oxidized graphene nanofiber membrane, and then the conductive oxidized graphene nanofiber membrane is subjected to reduction to prepare the conductive graphene nanofiber membrane with enhanced electrical conductivity.

Description

A kind of preparation of graphene conductive nano fibrous membrane
Technical field
The invention belongs to electrostatic spinning technique field, particularly relate to a kind of preparation of graphene conductive nano fibrous membrane.
Background technology
In recent years along with the development of material science, various natural or synthesis conductive material for the preparation of conductive-nano-fibers, to reach their optimum performance and to be applied to biomedical sector.At present, the exploration of the functionalization conductive-nano-fibers preparation method and technique with particular characteristic and suitable range of application is subject to extensive concern in fibrous material preparation field.
In conductive-nano-fibers preparation process, the key influence factor being selected to preparation conductive-nano-fibers of material.Graphene is sp 2the material with carbon element of the carbon atom tightly packed one-tenth individual layer bi-dimensional cellular shape lattice structure of hydridization, is one the thinnest in current known materials, is only a carbon atom thickness, and has excellent electric property, thermal property and mechanical property.Graphene not only has important theoretical research and is worth, simultaneously the stuctures and properties of its uniqueness interest of many researchers that had potential huge applications prospect to attract in a lot of fields.
In recent years, the graphene nano material prepared by self-assembling technique, chemical vapour deposition (CVD) and other complex methods is continued to bring out, as graphene paper, Graphene particle, Graphene composite nano fiber and graphene film etc.But the performance that the dispersion inhomogeneities of the structure of these graphene nano materials and Graphene causes Graphene excellent can not show completely, limit development and the application of Graphene.Although the graphene fiber that the graphene film having had researcher to prepare to have nucleocapsid structure is piled up, fibre diameter is only limitted to more than micron order, and preparative-scale is little simultaneously.
Meanwhile, in prior art, nano material is a large amount of in preparation process uses oxidant and soft chemical template, and these materials are difficult to clear up completely, cause its biocompatibility poor, seriously limit the application of nano material at biomedical engineering field.
Summary of the invention
The object of the invention is to the shortcoming and defect solving prior art, provide a kind of preparation method of graphene conductive nanofiber, and by higher conductive capability can be recovered again after chemistry or Physical reduction.
The technical solution realizing the object of the invention is: a kind of preparation method of graphene conductive nano fibrous membrane, comprises following concrete steps:
Step 1: the preparation of electro spinning nanometer fiber membrane
Spinning material is dissolved in the mixed solution of oxolane and DMF, is stirred to solution clarification, then the bubble in centrifugal removing solution, carry out electrostatic spinning process, obtain nanofiber, dry under vacuum room temperature;
Step 2: preparation graphene oxide dispersion
Mechanical stripping is carried out to graphene oxide, then in frozen water mixed liquor ultrasonic disperse;
Step 3: the preparation of stannic oxide/graphene nano tunica fibrosa
Filter graphene oxide dispersion for filter membrane with the nanofiber of preparation in step 1, it is 1 ~ 3mL that every square centimeter of nano fibrous membrane filters volume, then the nano fibrous membrane of coated graphene oxide is carried out drying at 20 DEG C ~ 80 DEG C;
Step 4: the preparation of graphene conductive nano fibrous membrane
Dried for step 3 graphene oxide conductive-nano-fibers film is carried out reduction reaction 0.5 ~ 1.5 hour at 60 DEG C ~ 100 DEG C, and after reaction terminates, after clean with washes of absolute alcohol, air dry obtains graphene conductive nano fibrous membrane.
Preferably, in described step 1, spinning material is any one in PLA, Poly(D,L-lactide-co-glycolide, polyvinylpyrrolidone, polyacrylonitrile, polycaprolactone; The mixed solvent mass percent of oxolane and DMF is (8 ~ 2): 2, and the mass fraction that spinning material accounts for total system is 1% ~ 10%.
Preferably, in described step 1, electrospinning parameter is: spray silk syringe needle internal diameter is 0.22mm, and voltage is 14KV, and receiving range is 10cm, carries out electrospinning with the fltting speed of 0.8mL/h;
Preferably, in described step 2, the concentration of frozen water mixed liquor is 1.0 ~ 1.5mg/mL.
Preferably, in described step 2, the concentration of graphene oxide dispersion is 0.1 ~ 2.0mg/mL.
Preferably, in described step 3, the reductant that reduction reaction adopts is hydroiodic acid, and its concentration is 40% ~ 80%, and the reduction reaction time is 0.5 ~ 1.5 hour.
Compared with prior art, the present invention has following advantage:
(1) adopt coated method successfully to prepare graphene conductive nano fibrous membrane, overcome material preparation process and cause the sex problem of bio-compatible.
(2) electrostatic spinning technique is simple to operate, with low cost, and reaction condition is gentle.
(3) manufacture craft is simple, can suitability for industrialized production.
Accompanying drawing explanation
Fig. 1 is the Electronic Speculum figure of the electro spinning nanometer fiber membrane that the present invention obtains.
Fig. 2 is pattern and the thickness figure of the graphene oxide obtained after mechanical stripping of the present invention.
Fig. 3 is the scanning electron microscope (SEM) photograph of the stannic oxide/graphene nano fiber that the present invention obtains.
Fig. 4 is the photomacrograph of the graphene conductive nano fibrous membrane that the present invention obtains.
Detailed description of the invention
Below in conjunction with concrete embodiment, set forth the present invention further.
Embodiment 1 is that raw material makes graphene conductive nano fibrous membrane with polyvinyl chloride
(1) polyvinyl chloride of 0.2 gram is dissolved in the oxolane that volume ratio is 8:2 and N, spinning solution is configured in N-dimethylformamide mixed liquor, the mass fraction that spinning material accounts for total system is 1%, and it is homogeneous to solution clarification under magnetic stirring, then under 1000rpm centrifugal 5 minutes, the bubble in removing solution.
(2) electrospinning is carried out at homemade electric spinning equipment, electrospinning parameter: spray silk syringe needle internal diameter is 0.22mm, under the voltage of 15KV, receiving range is 10cm, carry out electrospinning with the fltting speed of 1.0mL/h, spun by nanofiber on filter paper, each tunica fibrosa spinning solution volume is 1.0mL.By for subsequent use for the electro spinning nanometer fiber membrane vacuum drying at room temperature 24 hours of collecting.As shown in Figure 1, present monodisperse status between the fiber of obtained electro spinning nanometer fiber membrane and fiber, fiber surface is smooth, and thickness is homogeneous, and diameter is distributed between 400nm-700nm.
(3) Ultrasound Instrument is adopted by graphene oxide to carry out mechanical stripping, its pattern and thickness figure are as shown in Figure 2, the graphene oxide sheet size obtained after stripping is between 80-300nm, in frozen water mixed liquor with the concentration of 1.0mg/mL ultrasonic 30 minutes again, obtain the graphene oxide dispersion that concentration is 2.0mol/mL.
(4) be placed on Buchner funnel filter graphene oxide dispersion with the nano fibrous membrane of preparation, volume is 200mL.Under 0.8MPa pressure, carry out suction filtration, then the nano fibrous membrane of coated graphene oxide is carried out drying 24 hours at 100 DEG C, its Electronic Speculum figure as shown in Figure 3.
(5) be that 80% hydroiodic acid 100 DEG C at carry out reduction reaction 1.5 hour by concentration by the graphene oxide conductive-nano-fibers film of preparation in vial.After reaction terminates, with absolute ethanol washing tunica fibrosa 3-5 time, wash away unreacted hydroiodic acid.Last volatile dry, obtains the material object as shown in Fig. 4 photo.
Embodiment 2 is that raw material makes graphene conductive nano fibrous membrane with polyacrylonitrile
(1) polyacrylonitrile of 0.85 gram is dissolved in the oxolane that volume ratio is 6:2 and N, spinning solution is configured in N-dimethylformamide mixed liquor, the mass fraction that spinning material accounts for total system is 5%, and it is homogeneous to solution clarification under magnetic stirring, then under 1000rpm centrifugal 5 minutes, the bubble in removing solution.
(2) electrospinning is carried out at homemade electric spinning equipment, electrospinning parameter: spray silk syringe needle internal diameter is 0.22mm, under the voltage of 12KV, receiving range is 10cm, carry out electrospinning with the fltting speed of 0.8mL/h, spun by nanofiber on filter paper, each tunica fibrosa spinning solution volume is 1.0mL.By for subsequent use for the electrospinning film vacuum drying at room temperature 24 hours of collecting.
(3) adopted by graphene oxide Ultrasound Instrument to carry out mechanical stripping, in frozen water mixed liquor with the concentration of 1.2mg/mL ultrasonic 30 minutes, obtain the graphene oxide dispersion that concentration is 1mol/mL.
(4) be placed on Buchner funnel filter graphene oxide dispersion with the nano fibrous membrane of preparation, volume is 200mL.Under 0.8MPa pressure, carry out suction filtration, then the nano fibrous membrane of coated graphene oxide is carried out drying 24 hours at 80 DEG C.
(5) be that 60% hydroiodic acid 80 DEG C at carry out reduction reaction 1 hour by concentration by the graphene oxide conductive-nano-fibers film of preparation in vial.After reaction terminates, with absolute ethanol washing tunica fibrosa 3-5 time, wash away unreacted hydroiodic acid.Last volatile dry.
Embodiment 3 is that raw material makes graphene conductive nano fibrous membrane with Poly(D,L-lactide-co-glycolide
(1) Poly(D,L-lactide-co-glycolide of 1.35 grams is dissolved in the oxolane (THF) that volume ratio is 4:2 and N, spinning solution is configured in N-dimethylformamide (DMF) mixed liquor, the mass fraction that spinning material accounts for total system is 10%, and it is homogeneous to solution clarification under magnetic stirring, then under 1000rpm centrifugal 5 minutes, the bubble in removing solution.
(2) electrospinning is carried out at homemade electric spinning equipment, electrospinning parameter: spray silk syringe needle internal diameter is 0.22mm, under the voltage of 10KV, receiving range is 10cm, carry out electrospinning with the fltting speed of 0.5mL/h, spun by nanofiber on filter paper, each tunica fibrosa spinning solution volume is 1.0mL.By for subsequent use for the electrospinning film vacuum drying at room temperature 24 hours of collecting.
(3) adopted by graphene oxide Ultrasound Instrument to carry out mechanical stripping, in frozen water mixed liquor with the concentration of 1.0mg/mL ultrasonic 30 minutes, obtain the graphene oxide dispersion that concentration is 0.1mol/mL.
(4) be placed on Buchner funnel filter graphene oxide dispersion with the nano fibrous membrane of preparation, volume is 200mL.Under 0.8MPa pressure, carry out suction filtration, then the nano fibrous membrane of coated graphene oxide is carried out drying 24 hours at 80 DEG C.
(5) be that 40% hydroiodic acid 60 DEG C at carry out reduction reaction 0.5 hour by concentration by the graphene oxide conductive-nano-fibers film of preparation in vial.After reaction terminates, with absolute ethanol washing tunica fibrosa 3-5 time, wash away unreacted hydroiodic acid.Last volatile dry.

Claims (7)

1. a preparation method for graphene conductive nano fibrous membrane, is characterized in that, comprises following concrete steps:
Step 1: the preparation of electro spinning nanometer fiber membrane
Spinning material is dissolved in the mixed solution of oxolane and DMF, is stirred to solution clarification, then the bubble in centrifugal removing solution, carry out electrostatic spinning process, obtain nanofiber, dry under vacuum room temperature;
Step 2: preparation graphene oxide dispersion
Mechanical stripping is carried out to graphene oxide, then in frozen water mixed liquor ultrasonic disperse;
Step 3: the preparation of stannic oxide/graphene nano tunica fibrosa
Filter graphene oxide dispersion for filter membrane with the nanofiber of preparation in step 1, it is 1 ~ 3mL that every square centimeter of nano fibrous membrane filters volume, then the nano fibrous membrane of coated graphene oxide is carried out drying at 20 DEG C ~ 80 DEG C;
Step 4: the preparation of graphene conductive nano fibrous membrane
Dried for step 3 graphene oxide conductive-nano-fibers film is carried out reduction reaction 0.5 ~ 1.5 hour at 60 DEG C ~ 100 DEG C, and after reaction terminates, after clean with washes of absolute alcohol, air dry obtains graphene conductive nano fibrous membrane.
2. the preparation method of described graphene conductive nano fibrous membrane as claimed in claim 1, it is characterized in that, in step 1, spinning material is any one in PLA, Poly(D,L-lactide-co-glycolide, polyvinylpyrrolidone, polyacrylonitrile, polycaprolactone.
3. the preparation method of described graphene conductive nano fibrous membrane as claimed in claim 1, it is characterized in that, in step 1, oxolane and N, the mixed solvent mass percent of N-dimethylformamide is (8 ~ 2): 2, and the mass fraction that spinning material accounts for total system is 1% ~ 10%.
4. the preparation method of described graphene conductive nano fibrous membrane as claimed in claim 1, it is characterized in that, in step 1, electrospinning parameter is: spray silk syringe needle internal diameter is 0.22mm, and voltage is 14KV, and receiving range is 10cm, and fltting speed is 0.8mL/h.
5. the preparation method of described graphene conductive nano fibrous membrane as claimed in claim 1, it is characterized in that, in step 2, the concentration of frozen water mixed liquor is 1.0 ~ 1.5mg/mL.
6. the preparation method of described graphene conductive nano fibrous membrane as claimed in claim 1, it is characterized in that, in step 2, the concentration of graphene oxide dispersion is 0.1 ~ 2.0mg/mL.
7. the preparation method of described graphene conductive nano fibrous membrane as claimed in claim 1, is characterized in that, in step 3, the reductant that reduction reaction adopts is hydroiodic acid, and its concentration is 40% ~ 80%, and the reduction reaction time is 0.5 ~ 1.5 hour.
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Cited By (19)

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CN105297405A (en) * 2015-10-25 2016-02-03 复旦大学 Cobalt zinc sulfide/graphene/carbon nanofiber composite material and preparing method thereof
CN105463831A (en) * 2015-12-17 2016-04-06 复旦大学 Molybdenum disulfide/graphene/carbon nanofiber composite material and preparation method thereof
CN105755675A (en) * 2016-05-04 2016-07-13 南京理工大学 Reinforced heat-resistant polylactic acid electrostatic spun fibrous membrane and preparation method therefor
CN105954330A (en) * 2016-04-22 2016-09-21 上海师范大学 Nickel oxide/graphene/nanometer composite fiber film sensor, and preparation method and application thereof
CN106012099A (en) * 2016-07-15 2016-10-12 东华大学 Conductive PAN/rGO coaxial nanofiber and preparation method thereof
CN106637924A (en) * 2016-11-28 2017-05-10 苏州大学 Antibacterial textile and preparation method thereof
CN106898731A (en) * 2015-12-17 2017-06-27 中国科学院大连化学物理研究所 A kind of composite membrane and its preparation and application
CN106996035A (en) * 2017-03-17 2017-08-01 南通纺织丝绸产业技术研究院 Fabric with conductive flame retardant coating and preparation method thereof
CN107956110A (en) * 2017-11-28 2018-04-24 东华大学 A kind of redox graphene/polyacrylonitrile composite fiber and preparation method thereof
CN108589268A (en) * 2018-04-13 2018-09-28 西安交通大学 A kind of conductive-nano-fibers material and preparation method
CN109505117A (en) * 2018-09-19 2019-03-22 南京信息工程大学 A kind of composite modifying method of porous fibrous structure
CN109914037A (en) * 2019-03-29 2019-06-21 中原工学院 A kind of preparation method of non-woven nano-graphene/polyacrylonitrile non-woven fabrics
CN110528270A (en) * 2019-07-25 2019-12-03 长安大学 A kind of preparation method of the colored fiber with response colour change function
CN110735323A (en) * 2018-07-21 2020-01-31 南京理工大学 Preparation method of conductive composite nanofiber membrane
CN110983758A (en) * 2019-11-05 2020-04-10 西安科汇电子科技有限公司 Preparation method of conductive silk fibroin film for flexible mechanical sensor
CN111155242A (en) * 2019-11-29 2020-05-15 青岛农业大学 High-elasticity conductive nanofiber membrane and preparation method and application thereof
CN111150367A (en) * 2019-12-31 2020-05-15 浙江清华柔性电子技术研究院 Graphene/polymer nanofiber composite membrane and preparation method and application thereof
CN111439744A (en) * 2020-04-01 2020-07-24 福建滤冠新型材料科技有限公司 Preparation method of graphene nanofiber membrane
CN111629457A (en) * 2020-06-08 2020-09-04 北京石墨烯研究院有限公司 Heating film and preparation method thereof

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CN105297405A (en) * 2015-10-25 2016-02-03 复旦大学 Cobalt zinc sulfide/graphene/carbon nanofiber composite material and preparing method thereof
CN106898731A (en) * 2015-12-17 2017-06-27 中国科学院大连化学物理研究所 A kind of composite membrane and its preparation and application
CN105463831A (en) * 2015-12-17 2016-04-06 复旦大学 Molybdenum disulfide/graphene/carbon nanofiber composite material and preparation method thereof
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CN106012099A (en) * 2016-07-15 2016-10-12 东华大学 Conductive PAN/rGO coaxial nanofiber and preparation method thereof
CN106637924B (en) * 2016-11-28 2018-05-18 苏州大学 A kind of antibacterial fabric and preparation method thereof
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Application publication date: 20150902