CN108311112A - Surface sulfhydrylation carbon fiber production method based on lower temperature plasma technology - Google Patents
Surface sulfhydrylation carbon fiber production method based on lower temperature plasma technology Download PDFInfo
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- CN108311112A CN108311112A CN201810218112.2A CN201810218112A CN108311112A CN 108311112 A CN108311112 A CN 108311112A CN 201810218112 A CN201810218112 A CN 201810218112A CN 108311112 A CN108311112 A CN 108311112A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/28023—Fibres or filaments
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/22—Chromium or chromium compounds, e.g. chromates
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Abstract
The invention discloses a kind of surface sulfhydrylation carbon fiber production method based on lower temperature plasma technology, is related to environment-friendly materials technical field.Preparation method provided by the invention, it is base material by carbon fiber, by carbon fiber, low-temperature plasma handles to obtain the carbon fiber surface of enrichment amino under ammonia medium, again using EDC/NHS as catalyst, the surface sulfhydrylation carbon fiber with strong adsorptivity is obtained by the reaction with sulfhydrylization reagents such as cysteine acid in citric acid solution, to solve technical problem of the carbon fiber to the adsorption capacity deficiency of pollutant, technique effect of the enhancing carbon fiber to the adsorption capacity of pollutant is reached, and the preparation process of the thiolated modified carbon fiber in surface is simple, cost is relatively low, convenient for industrialization production.
Description
Technical field
The present invention relates to environment-friendly materials technical field, more particularly to a kind of surface sulfydryl based on lower temperature plasma technology
Change carbon fiber production method.
Background technology
Problem of environmental pollution has become focal issue of people's attention, and heavy metal pollution is one particularly important in water
Environmental protection problem.Heavy metal is the important pollutant of one kind in environment cannot be biodegradable since it is big with toxicity,
The easily features such as accumulation, therefore once enter water body and soil environment, it is difficult to remove from environment.It can both cause ecological environment
Deterioration, may further enter into food chain, significant damage caused to human body.But usually since certain subjective reasons or odjective cause make it
It is unprocessed it is up to standard be just discharged into river, lake or ocean, or enter in soil, cause water environment and soil environment by
Pollution.The source of heavy metal element includes the waste water that mining process generates, the waste water, the gold that select smelting production process to generate in water
Belong to the waste water that process generates and the waste water that electroplating process generates.There are many method for usually removing heavy metal in water removal, absorption
Method is one of common effective ways.Therefore, in recent years, novel, the efficient heavy-metal adsorption material of exploitation is always environmental protection
One of hot spot of area research.
Carbon fiber is that organic fiber carbonizes at a high temperature of 1000 DEG C or more, and phosphorus content is fine in 90% or more high-performance
Dimension, carbon fibre material have flourishing surface microporous structure and larger specific surface area, and carbon fiber pore-size distribution is narrow and uniform,
Can be removed by suction-operated to the pollutant of aqueous solution, in aqueous solution organic matter and heavy metal ion etc. have it is larger
Adsorption capacity and the faster rate of adsorption still maintain higher adsorbance to low concentration adsorbate.Therefore, carbon fiber is in Shui Chu
Application in reason has relatively broad foreground.
However, during existing use carbon fiber progress aqueous solution depollutes, since carbon fiber is to organic matter and a huge sum of money
Belong to the limited sorption capacity of the polluters such as ion, the usage amount of carbon fiber is often larger, is carried out to water pollution using carbon fiber
The cost of processing is higher.
Invention content
In view of the above-mentioned problems existing in the prior art, the present invention provides a kind of surfaces based on lower temperature plasma technology
Sulfhydrylation carbon fiber production method has carried out sulfhydrylation surface to carbon fiber and has been modified, mercapto groups are grafted to carbon fiber surface,
Its absorption property to heavy metal is improved using the mating capability of mercapto groups.
One side according to the ... of the embodiment of the present invention provides a kind of surface sulfhydrylation carbon based on lower temperature plasma technology
Fiber producing processes, the method includes：
Carbon fiber is put into soxhlet's extractor, it is at a temperature of 75 DEG C for 24 hours through acetone extract cleaning, then super through 75 DEG C again
After pure water cleaning, it is placed in 50 DEG C of baking oven and is dried；
The carbon fiber after drying is positioned in the processing chamber of Low Temperature Plasma Treating instrument, by the gas in the processing chamber
Pressure, which is evacuated to after 2 ~ 3Pa, to be passed through ammonia and is rinsed, and flow of the ammonia in the processing chamber is 30L/min, then again will
Gas in the processing chamber extracts so that vacuum state is in the processing chamber cavity, continuous use ammonia is to the place
Manage after chamber rinses 3 times, be passed through ammonia to the processing chamber again, and keep the processing chamber cavity internal pressure it is constant be 20 ~
40Pa, opens the radio-frequency power supply of the Low Temperature Plasma Treating instrument, and adjusts the discharge power of the radio-frequency power supply, to described
The carbon fiber surface in processing chamber carries out ammonia plasmas processing, and processing time is 3 ~ 20min, and discharge power is 90 ~
130W；
It will be placed in containing sulfhydrylization reagent after ammonia plasmas treated the carbon fiber is from processing chamber taking-up
It in the citric acid solution of EDC/NHS, is shaken under 25 ~ 30 DEG C of reaction temperature and carries out that filter residue is obtained by filtration for 24 hours afterwards, used
PBS solution cleans the filter residue 3 times, then after being washed to the filter residue with deionized water, and the filter residue is placed in 60 DEG C
Vacuum drying chamber dried, surface sulfhydrylation carbon fiber, citric acid solution sodium hydroxide tune is prepared
Section is to PH=4.7, mole of a concentration of 3 ~ 8mg/ml, EDC and NHS of sulfhydrylization reagent and EDC in the citric acid solution
Than being 1:1, the pH value of the PBS solution is 7.0 ~ 7.5.
In a preferred embodiment, it is described by ammonia plasmas treated the carbon fiber from the processing
After chamber takes out, it is placed in vacuum plant and is sealed preservation.
In a preferred embodiment, the sulfhydrylization reagent is at least one in the amino acid containing mercapto groups
Kind.
In a preferred embodiment, the carbon fiber surface in the processing chamber carries out ammonia plasma
The processing time of body processing is 15min, and the discharge power of the radio-frequency power supply is 100W.
In a preferred embodiment, in the citric acid solution sulfhydrylization reagent and EDC a concentration of 5mg/
ml。
Compared with prior art, a kind of surface sulfhydrylation carbon fiber provided by the invention and preparation method thereof has following excellent
Point：
Surface sulfhydrylation carbon fiber production method provided by the invention based on lower temperature plasma technology, by selecting ammonia to make
For the reaction medium of low temperature plasma, makes the surface plasma etching processing of carbon fiber and ammoxidation process while sending out
It is raw, save modification time；Acyl occurs for the amino of the carboxyl and carbon fiber surface that are contained using sulfhydrylization reagents such as cysteines
Aminating reaction, introducing sulfydryl, which is successfully prepared, compares the stronger thiolated modified carbon fiber of carbon fiber adsorption ability, to solve
Technical problem of the carbon fiber to the adsorption capacity deficiency of pollutant has reached enhancing carbon fiber to the adsorption capacity of pollutant
Technique effect, and the preparation process of the thiolated modified carbon fiber in surface is simple, cost is relatively low, is convenient for industrialization production.
Description of the drawings
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the present invention
Example, and be used to explain the principle of the present invention together with specification.
Fig. 1 is a kind of surface sulfhydrylation carbon fiber based on lower temperature plasma technology shown according to an exemplary embodiment
Tie up the method flow diagram of preparation method.
Specific implementation mode
Below in conjunction with specific embodiment（But it is not limited to illustrated embodiment) the detailed description present invention, the specific side of the present embodiment
Method only for illustrating that the present invention, the scope of the present invention should not be limited by the examples, the present invention can make in the application various forms with
The modification and variation of structure, these are similarly in the protection of the present patent application claim based on the equivalent form on the basis of the present invention
Range.
Embodiment 1
Fig. 1 is a kind of surface sulfhydrylation carbon fiber system based on lower temperature plasma technology shown according to an exemplary embodiment
Preparation Method, as shown in Figure 1, this method includes：
Step 101, carbon fiber is put into soxhlet's extractor, at a temperature of 75 DEG C for 24 hours through acetone extract cleaning, is then passed through again
After 75 DEG C of ultra-pure water cleaning, it is placed in 50 DEG C of baking oven and is dried.
Step 102, the carbon fiber after drying is positioned in the processing chamber of Low Temperature Plasma Treating instrument, it will be described
Air pressure in processing chamber, which is evacuated to after 2 ~ 3Pa, to be passed through ammonia and is rinsed, and flow of the ammonia in the processing chamber is 30L/
Then min again extracts the gas in the processing chamber so that vacuum state, continuous use are in the processing chamber cavity
After ammonia rinses the processing chamber 3 times, it is passed through ammonia to the processing chamber again, and keep the processing chamber cavity internal pressure
Constant is 20 ~ 40Pa, opens the radio-frequency power supply of the Low Temperature Plasma Treating instrument, and adjusts the electric discharge work(of the radio-frequency power supply
Rate carries out ammonia plasmas processing to the carbon fiber surface in the processing chamber, and processing time is 3 ~ 20min, electric discharge
Power is 90 ~ 130W.
Step 103, it will be placed in and contain after ammonia plasmas treated the carbon fiber is from processing chamber taking-up
In the citric acid solution for having sulfhydrylization reagent and EDC/NHS, shakes under 25 ~ 30 DEG C of reaction temperature and carried out afterwards for 24 hours
Filter obtains filter residue, clean 3 times to the filter residue with PBS solution, then after being washed to the filter residue with deionized water, will described in
The vacuum drying chamber that filter residue is placed in 60 DEG C is dried, and surface sulfhydrylation carbon fiber, the citric acid solution is prepared
It is adjusted to PH=4.7 with sodium hydroxide, a concentration of 3 ~ 8mg/ml of sulfhydrylization reagent and EDC in the citric acid solution,
The molar ratio of EDC and NHS is 1:1, the pH value of the PBS solution is 7.0 ~ 7.5.
Wherein, for EDC/NHS as catalyst, full name is 1- ethyls-（3- dimethylaminopropyls）Carbodiimide hydrochloride
（EDC）/ n-hydroxysuccinimide（NHS）.
It should be noted that cryogenic gas discharge plasma, the also referred to as chemical vapor deposition of plasma enhancing, i.e.,
Under the higher-energy state of current discharge, the chemical bond of the gaseous monomer of volatilization is interrupted, in material surface with covalently bonded
It closes, recombination, to form the structure active function layer different with chemical composition on surface.
The present invention uses reaction medium of the ammonia as low temperature plasma so that preparation process is deep to the effect of carbon fiber
Only hundreds of angstroms of degree, does not influence the fundamental property of carbon fibre material, to there is stronger bactericidal effect while carbon fiber surface modification.
In a preferred embodiment, it is described by ammonia plasmas treated the carbon fiber from the processing
After chamber takes out, it is placed in vacuum plant and is sealed preservation.
It should be noted that it is that other gases in air generate pollution to the surface of carbon fiber in order to prevent to be sealed
Corrosion.
In a preferred embodiment, the sulfhydrylization reagent is at least one in the amino acid containing mercapto groups
Kind.
For example, the sulfhydrylization reagent is cysteine acid.
In a preferred embodiment, the carbon fiber surface in the processing chamber carries out ammonia plasma
The processing time of body processing is 15min, and the discharge power of the radio-frequency power supply is 100W.
In a preferred embodiment, in the citric acid solution sulfhydrylization reagent and EDC a concentration of 5mg/
ml。
Surface sulfhydrylation carbon fiber production method provided by the invention based on lower temperature plasma technology, by selecting ammonia
Reaction medium of the gas as low temperature plasma keeps the surface plasma etching processing of carbon fiber and ammoxidation process same
Shi Fasheng saves modification time；The amino of the carboxyl and carbon fiber surface that are contained using sulfhydrylization reagents such as cysteines is sent out
Raw amidation process, introducing sulfydryl, which is successfully prepared, compares the stronger thiolated modified carbon fiber of carbon fiber adsorption ability, to
It solves technical problem of the carbon fiber to the adsorption capacity deficiency of pollutant, has reached adsorption energy of the enhancing carbon fiber to pollutant
The technique effect of power, and the preparation process of the thiolated modified carbon fiber in surface is simple, cost is relatively low, is convenient for industrialization production.
Embodiment 2
（1）Carbon fiber is put into soxhlet's extractor, at a temperature of 75 DEG C for 24 hours through acetone extract cleaning, then again through 75 DEG C
Ultra-pure water cleaning after, be placed in 50 DEG C of baking oven and dried.
（2）The carbon fiber after drying is positioned in the processing chamber of Low Temperature Plasma Treating instrument, by the processing
The air pressure of intracavitary, which is evacuated to after 2Pa, to be passed through ammonia and is rinsed, and flow of the ammonia in the processing chamber is 30L/min, so
The gas in the processing chamber is extracted again afterwards so that be in vacuum state in the processing chamber cavity, ammonia pair is used continuously
After the processing chamber is rinsed 3 times, it is passed through ammonia to the processing chamber again, and keeps that the processing chamber cavity internal pressure is constant to be
20Pa, opens the radio-frequency power supply of the Low Temperature Plasma Treating instrument, and adjusts the discharge power of the radio-frequency power supply, to described
The carbon fiber surface in processing chamber carries out ammonia plasmas processing, processing time 15min, discharge power 120W.
（3）It will be placed in containing partly after ammonia plasmas treated the carbon fiber is from processing chamber taking-up
In the citric acid solution of cystine and EDC/NHS, is shaken under 25 DEG C of reaction temperature and carry out that filter is obtained by filtration for 24 hours afterwards
Slag cleans the filter residue 3 times with PBS solution, then after being washed to the filter residue with deionized water, and the filter residue is placed in
60 DEG C of vacuum drying chamber is dried, and surface sulfhydrylation carbon fiber, the citric acid solution hydroxide is prepared
Sodium is adjusted to PH=4.7, mole of a concentration of 3mg/ml, EDC and NHS of cysteine and EDC in the citric acid solution
Than being 1:1, the pH value of the PBS solution is 7.0.
Embodiment 3
（1）Carbon fiber is put into soxhlet's extractor, at a temperature of 75 DEG C for 24 hours through acetone extract cleaning, then again through 75 DEG C
Ultra-pure water cleaning after, be placed in 50 DEG C of baking oven and dried.
（2）The carbon fiber after drying is positioned in the processing chamber of Low Temperature Plasma Treating instrument, by the processing
The air pressure of intracavitary, which is evacuated to after 3Pa, to be passed through ammonia and is rinsed, and flow of the ammonia in the processing chamber is 30L/min, so
The gas in the processing chamber is extracted again afterwards so that be in vacuum state in the processing chamber cavity, ammonia pair is used continuously
After the processing chamber is rinsed 3 times, it is passed through ammonia to the processing chamber again, and keeps that the processing chamber cavity internal pressure is constant to be
30Pa, opens the radio-frequency power supply of the Low Temperature Plasma Treating instrument, and adjusts the discharge power of the radio-frequency power supply, to described
The carbon fiber surface in processing chamber carries out ammonia plasmas processing, processing time 15min, discharge power 100W.
（3）It will be placed in containing partly after ammonia plasmas treated the carbon fiber is from processing chamber taking-up
In the citric acid solution of cystine and EDC/NHS, is shaken under 28 DEG C of reaction temperature and carry out that filter is obtained by filtration for 24 hours afterwards
Slag cleans the filter residue 3 times with PBS solution, then after being washed to the filter residue with deionized water, and the filter residue is placed in
60 DEG C of vacuum drying chamber is dried, and surface sulfhydrylation carbon fiber, the citric acid solution hydroxide is prepared
Sodium is adjusted to PH=4.7, mole of a concentration of 5mg/ml, EDC and NHS of cysteine and EDC in the citric acid solution
Than being 1:1, the pH value of the PBS solution is 7.3.
Embodiment 4
（1）Carbon fiber is put into soxhlet's extractor, at a temperature of 75 DEG C for 24 hours through acetone extract cleaning, then again through 75 DEG C
Ultra-pure water cleaning after, be placed in 50 DEG C of baking oven and dried.
（2）The carbon fiber after drying is positioned in the processing chamber of Low Temperature Plasma Treating instrument, by the processing
The air pressure of intracavitary, which is evacuated to after 3Pa, to be passed through ammonia and is rinsed, and flow of the ammonia in the processing chamber is 30L/min, so
The gas in the processing chamber is extracted again afterwards so that be in vacuum state in the processing chamber cavity, ammonia pair is used continuously
After the processing chamber is rinsed 3 times, it is passed through ammonia to the processing chamber again, and keeps that the processing chamber cavity internal pressure is constant to be
40Pa, opens the radio-frequency power supply of the Low Temperature Plasma Treating instrument, and adjusts the discharge power of the radio-frequency power supply, to described
The carbon fiber surface in processing chamber carries out ammonia plasmas processing, processing time 20min, discharge power 130W.
（3）It will be placed in containing partly after ammonia plasmas treated the carbon fiber is from processing chamber taking-up
In the citric acid solution of cystine and EDC/NHS, is shaken under 30 DEG C of reaction temperature and carry out that filter is obtained by filtration for 24 hours afterwards
Slag cleans the filter residue 3 times with PBS solution, then after being washed to the filter residue with deionized water, and the filter residue is placed in
60 DEG C of vacuum drying chamber is dried, and surface sulfhydrylation carbon fiber, the citric acid solution hydroxide is prepared
Sodium is adjusted to PH=4.7, mole of a concentration of 8mg/ml, EDC and NHS of cysteine and EDC in the citric acid solution
Than being 1:1, the pH value of the PBS solution is 7.5.
Measure of merit
1. testing standard
1）Above-described embodiment 2-4 is tested for the property, test event is the absorption to these heavy metal ion of Pb, Cd, Cr, Cu
Effect, the specific test method is as follows：
The surface sulfhydrylation carbon fiber that each embodiment is prepared is respectively placed in existing carbon fiber in identical water body environment
It is taken out after 12 hours, adsorption effect of each embodiment of measuring and calculation to these heavy metal ion of Pb, Cd, Cr, Cu.
Test result analysis
Table 1 be surface sulfhydrylation carbon fiber prepared by above-described embodiment 2-4 and comparative example to the heavy metal of Pb, Cd, Cr, Cu from
The test result of sub- adsorption effect.
The performance test results of 1 surface sulfhydrylation carbon fiber of table
As it can be seen from table 1 the surface sulfhydrylation carbon fiber prepared by embodiment 2-4 is to these heavy metals of Pb, Cd, Cr, Cu
The adsorption effect of ion is superior to comparative example, wherein 2 preparation-obtained surface sulfhydrylation carbon fiber of embodiment to Pb, Cd,
The adsorption effect of the heavy metal ion such as Cr, Cu compares other embodiment more preferably.From experimental result as it can be seen that the embodiment of the present invention provides
The preparation method of the surface sulfhydrylation carbon fiber based on lower temperature plasma technology pass through sulfhydrylation surface carried out to carbon fiber
It is modified, mercapto groups are grafted to carbon fiber surface, using the mating capability of mercapto groups, it can be greatly improved to heavy metal
Absorption property.
A kind of surface sulfhydrylation carbon fiber production method based on lower temperature plasma technology provided by the invention is first first adopted
Carbon fiber surface is carried out with plasma technique amination modified, surface is further obtained by the reaction with sulfhydrylization reagent again in product
The extremely strong surface sulfhydrylation carbon fiber preparation flow letter of adsorption capacity can be prepared by above-mentioned two step in sulfhydrylation carbon fiber
Single, production cost is relatively low.
Although having used general explanation, specific implementation mode and experiment above, the present invention is described in detail,
But on the basis of the present invention, can it be modified or be improved, this will be apparent to those skilled in the art.Cause
This, these modifications or improvements, belong to the scope of protection of present invention without departing from theon the basis of the spirit of the present invention.
Those skilled in the art will readily occur to other realities of the present invention after considering the invention of specification and practice here
Apply scheme.The present invention is directed to cover any variations, uses, or adaptations of the present invention, these modifications, purposes or suitable
The variation of answering property follows the general principle of the present invention and includes the undocumented common knowledge or used in the art of the present invention
Use technological means.It should be understood that the invention is not limited in the precision architecture for being described above and being shown in the accompanying drawings,
And various modifications and changes may be made without departing from the scope thereof.
Claims (5)
1. a kind of surface sulfhydrylation carbon fiber production method based on lower temperature plasma technology, which is characterized in that the method
Including：
Carbon fiber is put into soxhlet's extractor, it is at a temperature of 75 DEG C for 24 hours through acetone extract cleaning, then super through 75 DEG C again
After pure water cleaning, it is placed in 50 DEG C of baking oven and is dried；
The carbon fiber after drying is positioned in the processing chamber of Low Temperature Plasma Treating instrument, by the gas in the processing chamber
Pressure, which is evacuated to after 2 ~ 3Pa, to be passed through ammonia and is rinsed, and flow of the ammonia in the processing chamber is 30L/min, then again will
Gas in the processing chamber extracts so that vacuum state is in the processing chamber cavity, continuous use ammonia is to the place
Manage after chamber rinses 3 times, be passed through ammonia to the processing chamber again, and keep the processing chamber cavity internal pressure it is constant be 20 ~
40Pa, opens the radio-frequency power supply of the Low Temperature Plasma Treating instrument, and adjusts the discharge power of the radio-frequency power supply, to described
The carbon fiber surface in processing chamber carries out ammonia plasmas processing, and processing time is 3 ~ 20min, and discharge power is 90 ~
130W；
It will be placed in containing sulfhydrylization reagent after ammonia plasmas treated the carbon fiber is from processing chamber taking-up
It in the citric acid solution of EDC/NHS, is shaken under 25 ~ 30 DEG C of reaction temperature and carries out that filter residue is obtained by filtration for 24 hours afterwards, used
PBS solution cleans the filter residue 3 times, then after being washed to the filter residue with deionized water, and the filter residue is placed in 60 DEG C
Vacuum drying chamber dried, surface sulfhydrylation carbon fiber, citric acid solution sodium hydroxide tune is prepared
Section is to PH=4.7, mole of a concentration of 3 ~ 8mg/ml, EDC and NHS of sulfhydrylization reagent and EDC in the citric acid solution
Than being 1:1, the pH value of the PBS solution is 7.0 ~ 7.5.
2. according to the method described in claim 1, it is characterized in that, described by ammonia plasmas treated the carbon fiber
Dimension is placed in vacuum plant and is sealed preservation after processing chamber taking-up.
3. according to the method described in claim 1, it is characterized in that, the sulfhydrylization reagent is the amino acid containing mercapto groups
At least one of.
4. according to the method described in claim 1, it is characterized in that, the carbon fiber surface in the processing chamber into
The processing time of row ammonia plasmas processing is 15min, and the discharge power of the radio-frequency power supply is 100W.
5. according to the method described in claim 1, it is characterized in that, sulfhydrylization reagent and EDC in the citric acid solution
A concentration of 5mg/ml.
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