CN105709607B - A kind of ion exchange membrane preparation method and its equipment with poly-dopamine layer - Google Patents

A kind of ion exchange membrane preparation method and its equipment with poly-dopamine layer Download PDF

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Publication number
CN105709607B
CN105709607B CN201610124160.6A CN201610124160A CN105709607B CN 105709607 B CN105709607 B CN 105709607B CN 201610124160 A CN201610124160 A CN 201610124160A CN 105709607 B CN105709607 B CN 105709607B
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dopamine
poly
breather chamber
feed liquid
liquid room
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CN105709607A (en
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沈江南
赵严
董祥
柳慧敏
汤恺妮
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Zhejiang Baichen Low Carbon Technology Co ltd
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Zhejiang University of Technology ZJUT
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D67/00Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0002Organic membrane manufacture
    • B01D67/0006Organic membrane manufacture by chemical reactions
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D69/00Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/02Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2325/00Details relating to properties of membranes
    • B01D2325/42Ion-exchange membranes

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

A kind of ion exchange membrane preparation method and its equipment with poly-dopamine layer, the method include:Amberplex is fixed in the equipment equipped with dopamine solution, configures dopamine solution, poly-dopamine layer is prepared, prepares the modified ion exchange membrane with poly-dopamine layer;The equipment includes the first breather chamber, feed liquid room, the second breather chamber, electric mixer and gasing pump, the first breather chamber, feed liquid room and affixed three cell structures for forming sealing of the second breather chamber;The two sides of feed liquid room are equipped with the through hole connected with chamber in feed liquid room, through hole installation amberplex;The air inlet gas outlet pipeline connection with gasing pump respectively of the air inlet of first breather chamber, the second breather chamber;The agitating paddle of electric mixer stretches into the inner cavity of feed liquid room.The technology of the present invention beneficial effect is:Effectively reduce ion exchange film resistance;Can control formation poly-dopamine layer thickness and eliminate dopamine in the solution self polymerization and caused by loss, mild condition, reaction it is controllable.

Description

A kind of ion exchange membrane preparation method and its equipment with poly-dopamine layer
Technical field
The present invention relates to a kind of ion exchange membrane preparation method and its equipment with poly-dopamine layer.
Background technology
With the development of industrial technology, ion exchange membrane process is in seawater and bitter, sewage disposal, chemical industry, food Product and pharmaceutical industry, sea water desalination etc. are applied successfully so that amberplex plays more and more important in current development Role.Amberplex is applied in many fields, such as electrodialysis, dialysis, anti-electrodialysis, film electrolysis, fuel cell Deng.Electrodialysis is to separating inorganic salts, desalination water and the Electrochemical separation skill for handling waste water in a kind of system from aqueous solution Art, the electrolemma process applied with recovery of its Selective Separation ion from solution in the case where potential gradient is as driving force.In electricity During driving, ion passes through amberplex from light room Qian Xiangnong rooms under the action of electric field.Due to the height of amberplex Ion selectivity, it receives more and more concerns and research.For amberplex, have become one kind of current research Popular high performance membrane material, by the establishment of Chinese film Industry Association《Chinese film industry " 13 " strategic development planning》In carry Arrive, country will be strategic emerging industries structure film Industry positioning, promote industrial upgrading, the wherein related system of high performance membrane material Standby technology is the core of new and effective isolation technics, and ion exchange membrane technology research, which has become, solves water resource, the energy, environment Deng the important method of the significant problem in field, promoting Chinese national economy development and Industrial Technical Progress international competing with enhancing Power etc. is striven to play an important role.In electric drive membrane separating process, the antifouling property of film is assessment amberplex Important key element, and the problem that amberplex is very important in utilization.
Brought to solve the problems, such as to be contaminated by film, substantial amounts of resistance tocrocking material is found and applies.Dopamine In oxygen contact can performance poly-dopamine layer, it becomes current with excellent antifouling property and solves the contaminated heat of film Door material.Dopamine it has been found that in intracerebral, and it is verified help cell transmission neurotransmitter in intracerebral, have with many human emotions Close, after be found in the secretion of marine mussel, there is very strong biological viscosity.Just because of the presence of this material, make nature For bioadhesive phenomenon in boundary under aqueous conditions, it can issue raw self-polymeric reaction under aerobic environment, form strength and adhere to In the poly-dopamine thin layer of nearly all solid material surface, and it is not easily to fall off.Membrane material is the core of membrane technology, in this base On plinth, membrane technology researcher carries out surface modification by dopamine in epilamellar self-polymeric reaction to film in recent years, and more Further modified in bar amine layer, realize the improvement and optimization of film function.It is how that dopamine is uniform, fast during membrane modifying Fast coagulation facilitates the problem of smoothly being implemented as can not ignore of further modifying process to film surface.
The content of the invention
Attachment easily comes off when the present invention is directed to the modification of current ion exchange film surface, uneven thickness one is asked Topic, it is proposed that a kind of not easily to fall off, adhesion effect is good and thickness is homogeneous, the mild condition ion exchange with poly-dopamine layer Membrane preparation method and its equipment.
A kind of ion exchange membrane preparation method with poly-dopamine layer of the present invention, includes the following steps:
1) amberplex to be modified is installed:Anion-exchange membrane or cation-exchange membrane to be modified are installed on feed liquid The through hole of room both sides, keeps the medial surface of amberplex to be connected with chamber in feed liquid room;
2) dopamine solution is configured:Dopamine is dissolved in the Tris-HCl solution that concentration that pH is 8.5 is 10mmol/L Dopamine solution is made into, wherein the mass volume ratio of the dopamine and the Tris-HCl solution is 20:1;
3) poly-dopamine layer is prepared:Stirred after 100mL dopamine solutions are added feed liquid room, react 3- under the conditions of 22 DEG C 4h, reaction while all the time gas distribution on the outside of amberplex to be modified, keep the lateral surface of amberplex to exist all the time Even continuous gas mould so that the surface of amberplex forms uniform poly-dopamine layer, and wherein mixing speed is 100-150r/ min;Draft speed is 6-10m/s;
4) impurity elimination is cleaned:After deposition reaction, dopamine solution is outwelled rapidly, and pours into deionized water, is removed poly- more The impurity of bar amine layer surface and remaining unreacted dopamine solution, heighten agitator speed, are 300-400r/min;
5) modified ion exchange membrane with poly-dopamine layer is prepared:Stop concussion, remove modified amberplex, room It is placed in soak in pure water under temperature and preserves, you can obtains the modified ion exchange membrane with poly-dopamine layer.
The mixing speed of step 3) is 100r/min.
The reaction temperature of step 3) is 22 DEG C.
The equipment of preparation method structure according to the present invention, it is characterised in that:Including the first breather chamber, feed liquid room, Second breather chamber, electric mixer and gasing pump, first breather chamber, feed liquid room and the second breather chamber are consolidated by long bolt Connect three cell structures to form sealing, wherein the feed liquid room be clipped in first breather chamber and second breather chamber it Between;The two sides of the feed liquid room are equipped with the through hole connected with chamber in feed liquid room, through hole installation amberplex; The medial surface of first breather chamber and the medial surface of second breather chamber are respectively equipped with and feed liquid room ipsilateral through hole Corresponding venthole, the air inlet of first breather chamber, second breather chamber air inlet respectively with it is described defeated The gas outlet pipeline connection of air pump;The agitating paddle of the electric mixer stretches into the inner cavity of the feed liquid room.
The first rubber ring for being useful for sealing is matched somebody with somebody at the through hole edge, is matched somebody with somebody in the groove of through hole circumferential direction and is useful for sealing Second rubber ring.
The first row gas port connected with the first breather chamber is equipped with the top of first breather chamber.
The second exhaust port connected with the second breather chamber is equipped with the top of second breather chamber.
The beneficial effects of the invention are as follows:(1) it is used for ion exchange film surface and forms single side polymerization poly-dopamine layer;(2) have Effect reduces ion exchange film resistance;(3) at the same invention equipment can control formation poly-dopamine layer thickness and eliminate it is more Self polymerization in the solution of bar amine and caused by loss, this method mild condition, reaction is controllable.
Brief description of the drawings
Fig. 1 is the apparatus system flow chart that the present invention forms poly-dopamine layer in ion exchange film surface;
Fig. 2 is the feed liquid room end view drawing of the present invention;
Fig. 3 is that the present invention forms poly-dopamine layer device critical piece figure;
Fig. 4 is the apparatus system process schematic that the present invention forms poly-dopamine layer;
Fig. 5 is the antipollution effect figure of Surfactant of the present invention.
Embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings
Referring to the drawings:
A kind of ion exchange membrane preparation method with poly-dopamine layer of the present invention of embodiment 1, includes the following steps:
1) amberplex to be modified is installed:Anion-exchange membrane or cation-exchange membrane to be modified are installed on feed liquid The through hole of room both sides, keeps the medial surface of amberplex to be connected with chamber in feed liquid room;
2) dopamine solution is configured:0.2g dopamines are dissolved in the Tris- that concentration that 100mL pH are 8.5 is 10mmol/L Dopamine solution is made into HCl solution, wherein the mass volume ratio of the dopamine and the Tris-HCl solution is 20: 1;
3) poly-dopamine layer is prepared:Stir after 100mL dopamine solutions are added feed liquid room, reacted under the conditions of 22 DEG C 1h, reaction while all the time gas distribution on the outside of amberplex to be modified, keep the lateral surface of amberplex to exist all the time Even continuous gas mould so that the surface of amberplex forms uniform poly-dopamine layer, and wherein mixing speed is 100r/min; Draft speed is 6-10m/s;
4) impurity elimination is cleaned:After deposition reaction, dopamine solution is outwelled rapidly, and pours into deionized water, is removed poly- more The impurity of bar amine layer surface and remaining unreacted dopamine solution, heighten agitator speed, are 300r/min;
5) modified ion exchange membrane with poly-dopamine layer is prepared:Stop concussion, remove modified amberplex, room It is placed in pure water after soaking 24h and preserves under temperature, you can obtains the modified ion exchange membrane with poly-dopamine layer.
The mixing speed of step 3) is 100r/min.
The reaction temperature of step 3) is 22 DEG C.
The equipment of 2 preparation method according to the present invention of embodiment structure, including the first breather chamber 1, feed liquid room 2, the Two breather chambers 3, electric mixer 4 and gasing pump 5, first breather chamber 1,2 and second breather chamber 3 of feed liquid room pass through long spiral shell Affixed three cell structures for forming sealing of bar, lead to wherein the feed liquid room 2 is clipped in first breather chamber 1 and described second Between gas chamber 3;The two sides of the feed liquid room 2 are equipped with the through hole 21 connected with chamber in feed liquid room, pacify at the through hole 21 Fill amberplex 6;The medial surface of first breather chamber 1 and the medial surface of second breather chamber 3 be respectively equipped with The corresponding venthole of 2 ipsilateral through hole of feed liquid room, the first air inlet 11 of first breather chamber 1, the described second ventilation Second air inlet 31 of the room 3 gas outlet pipeline connection with the gasing pump 5 respectively;The stirring of the electric mixer 4 Paddle 41 stretches into the inner cavity of the feed liquid room 2.
The first rubber ring 22 for being useful for sealing is matched somebody with somebody at 21 edge of through hole, and the groove of through hole circumferential direction is interior close with being useful for Second rubber ring 23 of envelope.
The top of first breather chamber 1 is equipped with the first row gas port 12 connected with the first breather chamber.
The top of second breather chamber 3 is equipped with the second exhaust port 32 connected with the second breather chamber.
First breather chamber, the second breather chamber and the feed liquid room is square structure, and the first breather chamber, Second breather chamber and the vertex of feed liquid room four match somebody with somebody the mounting hole 24 for being useful for installation long bolt.
It is furnished with speed governing knob 42 and switch button 43 on the electric mixer 4.
Embodiment 3 controls influence of the turn speed of blender to depositing dopamine
According to a kind of ion exchange membrane preparation method with poly-dopamine layer described in embodiment 1, dopamine solution exists Ion exchange film surface formed poly-dopamine layer during, control respectively blender rotating speed be 20r/min, 50r/min, 100r/min、200r/min、400r/min.After depositing 4h, by the black particle material (material for comparing poly-dopamine surface Be dopamine solution auto polymerization formed poly-dopamine granule foreign, phenomenon 1), poly-dopamine formed color darkness (color is got over It is deep, show that the poly-dopamine layer to be formed is thicker, phenomenon 2) and observe what poly-dopamine top layer was formed in ion exchange film surface Uniformity (by observe ion exchange film surface formed poly-dopamine layer color it is whether homogeneous, phenomenon 3) situation so that The turn speed for going out blender forms the optimum speed scope of poly-dopamine layer in ion exchange film surface.
Embodiment 4 controls influence of the time to depositing dopamine for forming poly-dopamine layer
According to a kind of ion exchange membrane preparation method with poly-dopamine layer described in embodiment 1, dopamine solution exists Ion exchange film surface formed poly-dopamine layer during, control respectively dopamine solution deposit time be 2h, 3h, 4h, 5h, 6h, the rotating speed for controlling blender are 100r/min.By comparing the color darkness of poly-dopamine formation, (color is deeper, shows The poly-dopamine layer of formation is thicker, phenomenon 1) and the uniformity that is formed in ion exchange film surface of observation poly-dopamine top layer (by observe ion exchange film surface formed poly-dopamine layer color it is whether homogeneous, phenomenon 2) situation, so as to draw DOPA The time of amine aqueous solution deposition forms the Best Times scope of poly-dopamine layer in ion exchange film surface.
Embodiment 5 is tested for the modified ion exchange membrane antifouling property of preparation
The present embodiment 5 will be mainly placed on containing high density pollution material by the modified amberplex of poly-dopamine layer Electrodialytic process in, by measure in different time sections film resistance value added, so as to draw amberplex Antifouling property.By taking commercialized homogeneous-phase anion exchange film (company of Fuji, Japan) as an example, by by poly-dopamine modified lithium Anion-exchange membrane is positioned in electrodialysis plant, be put into using neopelex as pollutant electrodialytic one every In room, the anion-exchange membrane side that poly-dopamine layer is modified is containing neopelex compartment, in electrodialytic process In, in different time sections, by resistance of the comparative film with respect to original state, so as to evaluate its antifouling property.Pass through and compare The resistance value added of former film and the film after poly-dopamine modified lithium can be drawn, in 30min, unmodified anion exchange The resistance of film adds 1.95 Ω/cm2 and passes through modified membrane surface resistance value added close to 0.08 Ω/cm2;Pass through and compare The membrane surface resistance value added of 210min can show that the anion-exchange membrane by poly-dopamine modified lithium has good antipollution Performance.
Content described in this specification embodiment is only enumerating to the way of realization of inventive concept, protection of the invention Scope is not construed as being only limitted to the concrete form that embodiment is stated, protection scope of the present invention also includes art technology Personnel conceive according to the present invention it is conceivable that equivalent technologies mean.

Claims (7)

1. a kind of ion exchange membrane preparation method with poly-dopamine layer, includes the following steps:
1)Amberplex to be modified is installed:Anion-exchange membrane or cation-exchange membrane to be modified are installed on feed liquid room two The through hole of side, keeps the medial surface of amberplex to be connected with chamber in feed liquid room;
2)Configure dopamine solution:Dopamine is dissolved in the Tris-HCl solution that the concentration that pH is 8.5 is 10 mmol/L and is matched somebody with somebody Into dopamine solution, wherein the mass volume ratio of the dopamine and the Tris-HCl solution is 2:1, g/L;
3)Prepare poly-dopamine layer:Stirred after 100 mL dopamine solutions are added feed liquid room, react 3-4h at ambient temperature, Reaction while all the time gas distribution on the outside of amberplex to be modified, keep the lateral surface of amberplex to exist all the time and uniformly connect Continuous air film so that the surface of amberplex forms uniform poly-dopamine layer, and wherein mixing speed is 100-150 r/ min;Draft speed is 6-10 m/s;
4)Clean impurity elimination:After deposition reaction, dopamine solution is outwelled rapidly, and pours into deionized water, removes poly-dopamine The impurity of layer surface and remaining unreacted dopamine solution, heighten agitator speed, are 300-400 r/min;
5)Prepare the modified ion exchange membrane with poly-dopamine layer:Stop stirring rotating, remove modified amberplex, room It is placed in soak in pure water under temperature and preserves, you can obtains the modified ion exchange membrane with poly-dopamine layer.
A kind of 2. ion exchange membrane preparation method with poly-dopamine layer as claimed in claim 1, it is characterised in that:Step 3) Mixing speed be 100r/min.
A kind of 3. ion exchange membrane preparation method with poly-dopamine layer as claimed in claim 1, it is characterised in that:Step 3) Reaction temperature be 22 DEG C.
4. a kind of equipment of ion exchange membrane preparation method with poly-dopamine layer according to claim 1, its feature exist In:Including the first breather chamber, feed liquid room, the second breather chamber, electric mixer and gasing pump, first breather chamber, feed liquid Room and the second breather chamber are by affixed three cell structures for forming sealing of long bolt, wherein the feed liquid room is clipped in described first Between breather chamber and second breather chamber;The two sides of the feed liquid room are equipped with the through hole connected with chamber in feed liquid room, The through hole installation amberplex;The medial surface of the medial surface of first breather chamber and second breather chamber Venthole corresponding with feed liquid room ipsilateral through hole is respectively equipped with, the air inlet of first breather chamber, described second are led to The air inlet of the gas chamber gas outlet pipeline connection with the gasing pump respectively;The agitating paddle of the electric mixer stretches into institute The inner cavity for the feed liquid room stated.
5. equipment as claimed in claim 4, it is characterised in that:Match somebody with somebody the first rubber for being useful for sealing in the through hole edge Circle, the groove of through hole circumferential direction are interior with the second rubber ring for being useful for sealing.
6. equipment as claimed in claim 4, it is characterised in that:It is equipped with the top of first breather chamber and connects with the first breather chamber Logical first row gas port.
7. equipment as claimed in claim 4, it is characterised in that:It is equipped with the top of second breather chamber and connects with the second breather chamber Logical second exhaust port.
CN201610124160.6A 2016-03-04 2016-03-04 A kind of ion exchange membrane preparation method and its equipment with poly-dopamine layer Active CN105709607B (en)

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CN106925357B (en) * 2017-03-02 2019-05-31 浙江工业大学 A kind of preparation method of Monovalent selectivity anion-exchange membrane
CN107570017A (en) * 2017-08-29 2018-01-12 浙江工业大学 A kind of preparation method of antipollution anion-exchange membrane
CN108043239A (en) * 2017-11-29 2018-05-18 浙江工业大学 A kind of preparation method of the anion-exchange membrane with polysulfonate DOPA amine layer
CN109225357B (en) * 2018-08-28 2021-07-27 浙江工业大学 Method for preparing modified anion exchange membrane with monovalent selectivity and antibacterial property
CN109632912A (en) * 2018-12-29 2019-04-16 中国科学院烟台海岸带研究所 A method of improving polymer film ion selective electrode stability and service life in biology sample detection
CN112759041A (en) * 2019-10-21 2021-05-07 中国石油化工股份有限公司 Method for preparing anti-pollution ion exchange membrane
CA3168253A1 (en) 2020-03-13 2021-09-16 Charles Terrell Williams Bearings and components thereof comprising a hot-melt pressure sensitive adhesive and methods of their preparation
CN114748727B (en) * 2022-04-15 2023-06-09 北京大学 Electroosmosis pump and insulin pump system

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