CN104452436A - Nano-cellulose dispersing agent as well as preparation method and application of nano-cellulose dispersing agent - Google Patents
Nano-cellulose dispersing agent as well as preparation method and application of nano-cellulose dispersing agent Download PDFInfo
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Abstract
The invention discloses a nano-cellulose dispersing agent as well as a preparation method and application of the nano-cellulose dispersing agent. The nano-cellulose dispersing agent is prepared by the method comprising the following steps: fully and evenly mixing 5g of undried absolute dry softwood pulp, 78mg of TEMPO and 514mg of NaBr; triggering a reaction by introducing 30mL of 12% NaClO, and carrying out the reaction while mixing at the room temperature; controlling and stabilizing the pH value of a system to be 10.5 by NaOH; finishing the reaction until the rest NaClO in the system completely reacts; washing the reacted slurry by filtering until the pH is neutral; preparing the obtained fiber into a solution with 1% of centration, and treating the solution by a microfluidizer under the pressure of 5-25KPa to obtain transparent nano-cellulose dispersion liquid; storing the dispersion liquid in a refrigerator with the temperature of 4 DEG C. NFC is taken as the dispersing agent for dispersing two-dimensional materials BN and MoS2 as well as one-dimensional material CNT, so that the dispersing method is simple. The environment-friendly aqueous solution and dispersing agent are used, the dispersion efficiency is high, and the material can be dispersed on a large scale. The NFC is green and non-toxic, so that the NFC auxiliary dispersing material not only can be applied to an energy storing device, but also has important application prospect in the field of life sciences.
Description
Technical field
The present invention relates to nano-cellulose dispersant technical field, particularly a kind of nano-cellulose dispersant and its preparation method and application.
Background technology
The nano-cellulose separated in wood is green non-poisonous, and diameter is in nanometer range, and length can at micrometer range.Because of its good mechanics, optics and thermal property, it has been used as food thickening agent, the construction unit material of superpower compound, the diaphragm paper of battery and the base material of electronic equipment.Due to the existence of surperficial great amount of hydroxy group, nano-cellulose is considered to hydrophilic material usually, but research shows: cellulose surface has the hydrophobic active face produced because of the exposure of-CH group equally.Just because of nano-cellulose has amphipathic, it has been used as emulsifying agent and has prepared pickering emulsion.Use nano-cellulose as stabilizing agent stabilized nanoscale particle and as dispersant, CNT be dispersed in water report.To the nano-cellulose modification that is suitable for of surface, as surface silanization process, carboxymethyl modified etc., can further improve the effect of nano-cellulose as stabilizing agent.
Two-dimensional material is that a class inter-layer bonding force is more weak, and the material that layer internal bond is strong, more and more receive now the concern of people.Common two-dimensional material has: graphite, boron nitride (BN), transition metal dichalcogenide (MoS
2, WS
2), and some metal oxides (MoO
3, MnO
2).Based on the property of this kind of material, they are now widely used.Usual Heat Conduction Material also has good electric conductivity, but needs material have good thermal conductivity but do not wish electric conductivity in some applications.BN is exactly this kind of material.BN has good thermal conductivity, heat endurance is also good insulating materials simultaneously, thus has on protective material and insulating dielectric materials and extensively studies application.MoS
2because it is in the absorbent properties in solar spectrum district, electronic equipment and photoelectric material receive much concern.These two-dimensional material can separate the flaky material of thickness at nanometer or atomic layer by shearing force or blasting procedure, and this process is the stripping of two-dimensional material or dispersion.The dispersion of two-dimensional material can obtain the material of high-specific surface area, is applied to surface active material or catalyst.The another one effect that dispersion produces is, the electrical properties of material changes.Because in massive material, electron waves can extend at three-dimensional, and in two-dimensional material, the transmission of electron waves is limited in the two-dimensional directional of material.Such as MoS
2: the MoS of bulk
2for indirect band gap; Individual layer MoS after dispersion
2for direct band gap, strong luminescence generated by light phenomenon can be produced.For giving full play to the performance of two-dimensional material, effective dispersion of two-dimensional material is essential.The process for dispersing of favor is enjoyed to be liquid dispersion method.Because liquid dispersion method may be used for the large-scale production of two-dimension nano materials, the dispersion liquid obtained can for the preparation of preparing functional complex, being suitable for roller type production routine.Use when liquid processes is disperseed the green dispersant of green solution for dispersion carry out on a large scale more welcome.Because the impact of green non-poisonous chemicals on environment is little, can reduces or stop the recovery post processing of solvent, thus can reduce costs.
Another kind of be widely used but be difficult to disperse material be CNT.CNT is one of material that electric conductivity, thermal conductivity and mechanical property are the highest in the world, is therefore widely used in the system of electrically conductive composite.The electrical conductivity of electrically conductive composite and mechanical performance affect by the dispersity of CNT, the ordered arrangement of CNT and the compatibility between matrix and CNT.CNT in the base fully disperse (existing with the state of single or several CNT aggregations), be preparation high-performance CNT compound prerequisite.CNT is non-polar material, and specific area is large, and thus between CNT, Van der Waals for is huge.These all cause CNT, and easily wadding is poly-in aqueous, is difficult to stable dispersion in water.People have carried out a large amount of further investigation to CNT chemical modification with the dispersive property improving CNT.But chemical modification can destroy the structure of CNT itself, increase the cost of product; Due to the introducing of synthetic polymer or functional group, the connection between CNT can be reduced thus reduce the electric conductivity of product.For the use of alternative synthetic polymer, increase gradually the research of low cost nano material dispersion CNT, wherein nano-cellulose receives much concern.
Summary of the invention
Goal of the invention: for the deficiencies in the prior art, the object of the present invention is to provide a kind of nano-cellulose dispersant, to disperseing a peacekeeping two-dimensional material.Another object of the present invention is to provide the preparation method of above-mentioned nano-cellulose dispersant.The present invention also has an object to be to provide the application of above-mentioned nano-cellulose dispersant.
Technical scheme: in order to realize foregoing invention object, the technical solution used in the present invention is as follows:
A kind of nano-cellulose dispersant, is prepared by following methods: the over dry softwood pulp that 5g is not dried and 78mg TEMPO, 514mg NaBr fully mix; Reaction adds initiation by 30mL 12%NaClO, and reacts under stirring at room temperature; The pH value of system controls to be stabilized in 10.5 by NaOH; The end until system interior residue NaClO reacts completely; Reacted slurry is clean by filtration washing, to pH in neutral; The concentration fiber obtained being made into 1% is processed under 5 ~ 25KPa pressure by microfluidizer; Obtain transparent nanofiber element dispersion liquid; Dispersion liquid storage and 4 DEG C of refrigerators.
Prepare a method for described nano-cellulose dispersant, comprise the following steps: the over dry softwood pulp that 5g is not dried and 78mg TEMPO, 514mg NaBr fully mix; Reaction adds initiation by 30mL 12%NaClO, and reacts under stirring at room temperature; The pH value of system controls to be stabilized in 10.5 by NaOH; The end until system interior residue NaClO reacts completely; Reacted slurry is clean by filtration washing, to pH in neutral; The concentration fiber obtained being made into 1% is processed under 25KPa pressure by microfluidizer; Obtain transparent nanofiber element dispersion liquid; Dispersion liquid storage and 4 DEG C of refrigerators.
Described nano-cellulose is as the application of dispersant.
Described nano-cellulose dispersant is at dispersion two-dimensional material BN and MoS
2in application.
Described application, is characterized in that: the dispersion liquid concentration of BN is up to 1.1mg/mL.
Described application, is characterized in that: MoS
2dispersion liquid concentration up to 0.9mg/mL.
The application of described nano-cellulose dispersant in dispersion one-dimensional material CNT.
Beneficial effect: compared with prior art, tool of the present invention have the following advantages and high-lighting effect: NFC as dispersant two-dimensional material BN and MoS2 and one-dimensional material CNT, process for dispersing is simple, and the dispersion liquid concentration obtained is high, and (BN concentration is 1.1mg/mL, MoS
2dispersion liquid concentration up to 0.9mg/mL), dispersion yield high (yield of BN is 22%).And NFC addition increases, the concentration of dispersion liquid increases.Use aqueous solvent and the dispersant of environmental protection, dispersion efficiency is high, can carry out the dispersion in enormous quantities of material.Due to the green non-poisonous property of NFC, the material of NFC aid dispersion not only can be applied to energy storage device, at life science also by important application prospect.
Accompanying drawing explanation
Fig. 1 is the characterization result figure of TEMPO method oxycellulose;
Fig. 2 is TEMPO oxycellulose once just can obtain NFC later characterization result figure by microfluidizer;
Fig. 3 is BN and the MoS after dispersion
2characterization result figure;
Fig. 4 is the result figure that TEM characterizes dispersion;
Fig. 5 is that NFC disperses CNT result figure.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described further, but the present invention is not limited by the following examples.
The main agents used in following examples and instrument as follows:
BN powder (Graphene supermarket, Inc.); Ultraviolet spectrometer UV-Vis Spectrometer Lambda 35(PerkInElmer, USA); Transmission electron microscope (TEM, FEI QUANTA 200, the U.S.); Zeta potential tester model is Zetasizer Nano ZS90(Malvern Instruments, Worcestershire, UK); Dynamic mechanical analyzer analyzes (DMA, Q800); Hitachi (HITACHI) S-510 ESEM; Ultrasound Instrument (FS 110D, Fisher Scientific).Bleaching needle-point leaf pulp plate is Brazilian snapper board, and it is 150mL that slurry first gets to Canadian freeness through a watt power beater.
Embodiment 1 NFC UV absorber
The over dry softwood pulp that 5g is not dried and 78mg TEMPO, 514mg NaBr fully mix.Reaction adds initiation by 30mL 12%NaClO, and reacts under stirring at room temperature.The pH value of system controls to be stabilized in 10.5 by NaOH.The end until system interior residue NaClO reacts completely.Reacted slurry is clean by filtration washing, to pH in neutral.The fiber obtained is made into the concentration of 1% by microfluidizer (5-25KPa) process under stress.Obtain transparent nanofiber element (NFC) dispersion liquid.Dispersion liquid storage with 4 DEG C of refrigerators in stand-by.
ESEM (SEM) is observed: after testing sample is carried out vacuumize, and sticky platform, vacuum metal spraying, operating condition voltage is 20kV.
The length and width degree of nano-cellulose adopts transmission electron microscope and fiber morphology to be characterized by AFM (AFM).Drip 10 μ L nanofiber cellulose solutions during TEM sample preparation online at charcoal, unnecessary liquid filter paper siphons away, and operating voltage is 100kV.During AFM sample preparation, drip 10 μ L nanofiber cellulose solutions on the silicon chip of 1cm × 1cm, by spin coating instrument, nano-cellulose is smoothened on silicon chip.Under tapping-mode, carry out observation after drying characterize.
Solution Zeta potential is obtained by Zeta potential tester.During test, NFC liquid quality fraction is 0.7 mg/mL, pH is 7.8.
Characterization result as shown in Figure 1, wherein a-c is the SEM figure of TEMPO oxidized fibre, d is cellophane paper prepared by TEMPO oxidized fibre, conductive ink is write on paper prepared by TEMPO oxidized fibre by e, f is that ammeter test shows the conductor wire write and has good electric conductivity, and the paper prepared at TEMPO oxidized fibre obtains diode by ball stroke to g.After TEMPO oxidation processes fiber, fiber surface C 6 hydroxyls are oxidized to carboxyl, add the charged group content on fiber.Simultaneously due to oxidation reaction and the churned mechanically active force of fiber, interfibrous bond strength reduces, and longitudinal cracking (a-b in Fig. 1), even appears in the breakage of fiber surface generation cell membrane.Meanwhile, the length of fiber reduces, width reduces, and in solution, fines content increases.High power surface sweeping electricity Microscopic observation fiber surface (c in Fig. 1) is known, and surface containing a large amount of microfibres, and is meshy arrangement.This meets the structure of microfibre in timber primary wall.Although the fiber overwhelming majority after TEMPO oxidation is still micrometer fibers, solution has certain viscosity and transparency.Fiber after direct filtration TEMPO oxidation can obtain transparent and have the paper (d in Fig. 1) of certain mist degree.Paper maintains good writing quality, with surface flatness simultaneously.Surface flatness may mainly contain the nanofibres deposit produced in preparation process and cause at paper surface.E-g in Fig. 1, for write conductive material on paper, prepares the paper substrate electronic equipment that can write.
TEMPO oxycellulose once just can obtain NFC by microfluidizer later, result as shown in Figure 2, wherein, the TEM obtaining NFC under low power a and high power b schemes, c is the AFM figure of NFC, and d is NFC solution, and e is that green laser irradiates NFC solution, the petrographic microscope picture that f is NFC solution concentration when being 1%, g is NFC gel.Larger by the pressure of microfluidizer, the NFC size obtained is less.A in Fig. 2 is the NFC obtained by the microfluidizer process of 25KPa pressure.Its diameter is less than 10nm, and length is in hundreds of nanometer.High magnification TEM figure (b in Fig. 2) shows NFC and has beautiful crystalline texture.AFM is also used to characterize NFC pattern (c in Fig. 2), and the NFC diameter shown in AFM figure is slightly larger than TEM result, and this is relevant with characterization method.The feature of the aqueous solution of NFC is its optical transparence (d in Fig. 2), and the Tyndall phenomenon of nano-solution.Due to NFC show containing TEMPO oxidation introduce charged group, NFC can stable dispersion in water.Carry out Zeta potential test to NFC solution to know: the Zeta potential of solution is-64.9mV, confirms the good stability of solution.NFC has the characteristic of self assembly, and when NFC solution concentration is 1%, solution starts to embody liquid crystal form, as shown in the e in Fig. 2.The concentration of further raising NFC solution, the change of NFC gel can be formed, as the f in Fig. 2.
Embodiment 2 BN, MoS
2with dispersion and the sign of CNT
First commercially available BN powder (Graphene supermarket, Inc.) is mixed in water with corresponding BN quality 10wt% NFC.BN initial concentration is 5mg/mL.Dispersion is by realizing ultrasonic in groove type ultrasonic instrument for mixed liquor (groove type ultrasonic instrument, ultrasonic power 200W, ultrasonic time 30h).Solution after ultrasonic is centrifugal 15min under 3000r/min rotating speed, then isolates supernatant liquor.The absorption spectrum of solution is tested and is obtained on ultraviolet spectrometer.
MoS
2there is (SPI Supplies) with ore form, process for dispersing is with BN process for dispersing.The addition of NFC is respectively MoS
210wt% and 50wt% of quality.Ultrasonic time is 4h, and centrifugal rotational speed is 5000r/min.The absorption spectrum of solution is tested and is obtained on ultraviolet spectrometer.
First CNT(Carbon Solution) mix in water with the NFC of mass ratio 1:1.CNT initial concentration is 1mg/mL.Then by mixed liquor ultrasonic 5min in probe type ultrasonic instrument.Solution after ultrasonic is centrifugal 15min under 3000r/min rotating speed, isolates supernatant liquor.The absorption spectrum of solution is tested and is obtained on ultraviolet spectrometer.
BN and MoS after dispersion
2employing transmission electron microscope characterizes.Drip 10 μ L dispersion liquids during TEM sample preparation online at charcoal, unnecessary liquid filter paper siphons away drying.
Solution Zeta potential is obtained by Zeta potential tester.During test, BN pH value of solution is 7.8; MoS
2pH value of solution is 7.7; CNT solution ph is 7.7.
Result as shown in Figure 3, wherein, a is the AFM figure of NFC, b be not containing and leave standstill 10 days later figure containing the BN dispersion liquid of NFC, c is the figure after the standing February of the MoS2 dispersion liquid not containing and contain NFC, d-e is for being respectively BN and MoS2 ultra-violet absorption spectrum, and insertion figure is respectively the BN dispersion liquid and MoS2 dispersion liquid that disposable dispersion obtains.The dispersion of two-dimensional material is by using NFC to be dispersant ultrasonic realization in groove type ultrasonic instrument.NFC length as dispersant is about 50-200nm, diameter be about in 10-20nm(Fig. 3 a).Because the introducing of charged group, NFC aqueous dispersions is highly stable, and solution is transparent.The stability of solution uses zeta current potential to characterize usually.Zeta potential is less than 20 or be greater than-20mV and indicate that solution is unstable; Numerical value solution when 20-30mV or-30 to-20mV is in metastable state; Numerical value is when 30-40mV or-40 to-30mV, and solution is comparatively stabilizing solution; When numerical value is 40-60mV or-60 to-40mV, it is stabilizing solution; Numerical value is highly stable solution when being greater than 60mV or being less than-60mV.The Zeta potential of NFC solution is-64.9mV, confirms that solution has good stability.Dispersed BN is Powdered, and average transverse is 5 μm; MoS
2exist with mineral forms.Due to adding of dispersant NFC, BN is very simply just dispersed in water.The BN solution obtained, concentration is 1.1mg/mL, and dispersion yield (in dispersion liquid in BN quality and raw material BN mass ratio) is 22%, is the most high yield pulp1 that current supercritical ultrasonics technology disperses BN.And the BN dispersion liquid obtained has good stability.As shown in the b in Fig. 3: dispersion liquid left standstill after 10 days, there is the poly-deposited phenomenon of wadding in the solution not adding NFC dispersant, the BN dispersion liquid adding NFC dispersant is still highly stable.The electrostatic repulsion forces that the stability of solution is mainly produced by NFC surface carboxyl groups causes.For characterizing the stability of solution, test the zeta current potential of solution.The BN solution of NFC aid dispersion, Zeta potential is-41.9mV, shows that stability of solution is good, also demonstrates electrostatic repulsion forces stable mechanism simultaneously.Because MoS
2hydrophobicity, be difficult to disperse in water.But MoS after adding NFC
2be easy to be dispersed in water.Usually need the ultrasonic 20h that is greater than could MoS in organic solvent
2dispersion, after adding NFC, ultrasonic 4h just can obtain the MoS disperseing yield 18%
2dispersion liquid.Contrast does not add the MoS of NFC
2dispersion liquid, the MoS of NFC aid dispersion
2dispersion liquid color is darker.Calculate MoS
2dispersion liquid concentration is known, and the dispersion liquid concentration adding 10% NFC is 0.3mg/mL, and the dispersion liquid concentration adding 50wt% NFC is 0.9mg/mL.This result shows that increasing NFC addition can improve MoS
2dispersion.MoS
2disperse whole process only to need 4h, be far smaller than ion insertion dispersion MoS
2the required time (20h).And whole process only needs to add MoS when starting
2quality 10% NFC, dispersant dosage is starkly lower than the dispersant dosage of other polymer aid dispersion.Usual polymer volume is MoS
210 times of quality.NFC addition also disperses MoS lower than by dispersant method
2time dispersant consumption (dispersant dosage is MoS
2the 30wt% of quality).The MoS that NFC aid dispersion obtains
2dispersion liquid is highly stable.C in Fig. 3 is MoS
2dispersion liquid leaves standstill the photo after a period of time.Do not add the MoS of NFC
2dispersion liquid leaves standstill and just precipitates for 1 day later, and the MoS of NFC aid dispersion
2it is later still highly stable that dispersion liquid leaves standstill 2 months.The MoS of test 10%NFC aid dispersion
2dispersion liquid Zeta potential is-38.3 mV, shows that solution is very stable.
Ultra-violet absorption spectrum test is carried out to solution, has detected the solution whether solution be fine dispersion.D in Fig. 3 is the absorption spectrum of BN dispersion liquid, has an obvious BN characteristic absorption peak at 203nm place, with the BN dispersion liquid absworption peak position consistency of report.E in Fig. 3 is MoS
2dispersion liquid abosrption spectrogram, there are two obvious absworption peaks POP at 605nm and 664 nm places respectively.The MoS that the absworption peak at this two place and grinding auxiliary liquid disperse
2dispersion liquid peak position is consistent.The abosrption spectrogram of dispersion liquid demonstrates material and has been broken up into individual layer or multi-layer nano sheet in a solvent.The above results shows to be that dispersant can effectively by BN and MoS with NFC
2be dispersed in water.The method of dispersion is simple, efficient, is applicable to the extensive dispersion of two-dimensional material.Can be easy under laboratory condition disposablely obtain 200mL two-dimensional material dispersion liquid.The insertion figure of the d-e in Fig. 3 is respectively the BN dispersion liquid and MoS that disposable dispersion obtains
2dispersion liquid.
Characterize the size of the BN sheet of dispersion with TEM, as shown in Figure 4, a-b be not containing and c be the TEM figure of BN dispersion liquid containing NFC, d does not contain and e-f is MoS containing NFC
2the TEM figure of dispersion liquid, g-i are the TEM figure of the BN of NFC dispersion and corresponding rubidium marking figure, and red arrow points to fiber.Do not add BN lateral dimension that NFC disperses to obtain at 50-300nm scope (a-b in Fig. 4).The BN lateral dimension size adding NFC dispersant does not wait (c Fig. 3) from 200 nm to micron.This is because NFC is adsorbed on BN sheet, protection BN sheet is not smashed by the dispersion force that ultrasonic wave causes.Similar result is at MoS
2dispersion in also by embodying.Do not add the MoS of NFC
2in dispersion liquid, MoS
2lateral dimension size is about 100nm; Add the MoS of NFC dispersant
2in dispersion liquid, MoS2 lateral dimension size is about the d-f in 500nm(Fig. 4).For obviously representing that NFC is adsorbed on BN/MoS
2on sheet, carry out rubidium marking for BN.G in Fig. 4 is the BN sheet carrying out rubidium marking, and the h-i in Fig. 4 is respectively the rubidium marking figure of N and B, shows that selected sheet is BN.J in Fig. 4 is the signature of O element, shows the distribution of NFC on BN sheet.As seen from the figure BN sheet there is a large amount of NFC.
Fig. 5 is that NFC disperses CNT result figure, and wherein, in a, 1 is the picture that the SWNT not adding NFC and 2 interpolation NFC is dispersed in water, and b is the ultraviolet spectrogram of the CNT solution that NFC solution and NFC disperse, and c is CNT-NFC gel.
The CNT used is the Single Walled Carbon Nanotube (SWNT) of partially modified mistake, the about 5nm of diameter, length 1-5 μm, in Powdered before dispersion.The dispersion of CNT is realized by ultrasonic wave process, ultrasonic rear solution is carried out centrifugal to remove the CNT that do not disperse.A in Fig. 5 leaves standstill the state after 1 day after CNT ultrasonic disperse, does not add NFC, with the addition of the NFC with CNT quality 1:1 in No. 2 samples in No. 1 sample.The sample stability that NFC is added in result display is higher, and not easily wadding is poly-.Carry out Zeta potential sign to the NFC solution obtained, the Zeta potential obtaining solution is-54.9mV, shows that stability of solution is high.Pure NFC solution Zeta potential carries out ultraviolet spectral analysis for-54.9mV to solution, occurs SWNT characteristic peak in collection of illustrative plates, and display CNT is by effectively dispersion (b in Fig. 5).This process for dispersing makes the extensive dispersion of CNT become possibility, and the CNT solution obtained can be used for preparing electrically conductive composite, conductive ink etc.CNT gel (c in Fig. 5) can be obtained by concentrated for CNF weak solution, just can prepare different electrically conductive composites to gel is dry by different way.
Above result shows that NFC can as dispersant by BN, MoS
2, CNT is scattered in water.
Claims (7)
1. a nano-cellulose dispersant, is characterized in that, is prepared by following methods:
The over dry softwood pulp that 5g is not dried and 78mg TEMPO, 514mg NaBr fully mix; Reaction adds initiation by 30mL 12%NaClO, and reacts under stirring at room temperature; The pH value of system controls to be stabilized in 10.5 by NaOH; The end until system interior residue NaClO reacts completely; Reacted slurry is clean by filtration washing, to pH in neutral; The concentration fiber obtained being made into 1% is processed under 5 ~ 25KPa pressure by microfluidizer; Obtain transparent nanofiber element dispersion liquid; Dispersion liquid storage and 4 DEG C of refrigerators.
2. prepare a method for nano-cellulose dispersant according to claim 1, it is characterized in that, comprise the following steps: the over dry softwood pulp that 5g is not dried and 78mg TEMPO, 514mg NaBr fully mix; Reaction adds initiation by 30mL 12%NaClO, and reacts under stirring at room temperature; The pH value of system controls to be stabilized in 10.5 by NaOH; The end until system interior residue NaClO reacts completely; Reacted slurry is clean by filtration washing, to pH in neutral; The concentration fiber obtained being made into 1% is processed under 25KPa pressure by microfluidizer; Obtain transparent nanofiber element dispersion liquid; Dispersion liquid storage and 4 DEG C of refrigerators.
3. nano-cellulose according to claim 1 is as the application of dispersant.
4. nano-cellulose dispersant according to claim 1 is at dispersion two-dimensional material BN and MoS
2in application.
5. application according to claim 4, is characterized in that: the dispersion liquid concentration of BN is up to 1.1mg/mL.
6. application according to claim 4, is characterized in that: MoS
2dispersion liquid concentration up to 0.9mg/mL.
7. the application of nano-cellulose dispersant according to claim 1 in dispersion one-dimensional material CNT.
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