CN106268380A - A kind of polyelectrolyte film based on Glycine sodium and its preparation method and application - Google Patents
A kind of polyelectrolyte film based on Glycine sodium and its preparation method and application Download PDFInfo
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- CN106268380A CN106268380A CN201610828707.0A CN201610828707A CN106268380A CN 106268380 A CN106268380 A CN 106268380A CN 201610828707 A CN201610828707 A CN 201610828707A CN 106268380 A CN106268380 A CN 106268380A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/76—Macromolecular material not specifically provided for in a single one of groups B01D71/08 - B01D71/74
- B01D71/80—Block polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
- B01D53/228—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion characterised by specific membranes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0002—Organic membrane manufacture
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2256/00—Main component in the product gas stream after treatment
- B01D2256/18—Noble gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2256/00—Main component in the product gas stream after treatment
- B01D2256/24—Hydrocarbons
- B01D2256/245—Methane
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/504—Carbon dioxide
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- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
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Abstract
The invention discloses a kind of polyelectrolyte film based on Glycine sodium and preparation method thereof, this film is made up of polyether block polyamides copolymer and Glycine sodium, and its preparation method includes: the preparation steps of (1) sodium glycinate solution；(2) preparation steps of polyether block polyamides copolymer solution；(3) preparation process of polyelectrolyte film.The polyelectrolyte film based on Glycine sodium that the method obtains can be used for separating CO2/CH4、CO2/N2Mixed gas, and its preparation process is simple, improves poly-electrolytic film gas separating property, and uses the prices of raw materials low in cost and easily available, has potential industrial applications prospect.
Description
Technical field
The invention belongs to organic functional material technical field, be specifically related to a kind of polyelectrolyte film based on Glycine sodium.
Background technology
Along with the energy and the intensification day by day of environmental crisis, exploitation efficiently, low energy consumption, eco-friendly isolation technics be to solve
Energy gas purifies and the key of reduction of greenhouse gas discharge.Membrane separation technique be a kind of efficiently, low energy consumption, low-carbon (LC), floor space little,
One of easy-operating new separation technology, membrane material is the key components of membrane separation technique.The physical chemistry of membrane material
Matter decides the quality of the separating property of film, the effect of the separating property decision membrane separation technique of film and operating cost, and film system
Standby complexity and the length in service life then determine the cost of investment of membrance separation.Film can be divided into polymeric membrane, nothing by material
Machine film, macromolecular-inorganic hybrid membrane.Wherein, polymeric membrane has advantages such as separating property is good, low cost, easy processing, but its point
Being restricted by " trade-off " effect from performance, when i.e. permeability improves, selectivity declines, and vice versa, it is difficult to realizes permeability
With optionally improve simultaneously.
In recent years, along with the development of the research of membrane science and technology, polyelectrolyte film is as a kind of novel gas
The research separating film causes the concern of researchers.Polyelectrolyte film is to be prepared by polyelectrolyte material.The most poly-electricity
Solving plasma membrane is that the hydrophilic membrane material containing ionogenic ion is constituted, can be by originally as the macromolecular material structure of polyelectrolyte
Become, it is possible to be made up of hydrophilic macromolecule and salt.Therefore, polyelectrolyte film has high-hydrophilic, and when swelling
Still there is certain mechanical strength, and the strong hydration of ion in film and the salting-out effect to nothing to be separated so that poly-
Membrane materials for electrolyte demonstrates good separating property, is expected to overcome " trade-off " effect to restrict.
Summary of the invention
First shortcoming aiming to overcome that existing membrane material of the present invention, it is provided that a kind of poly-electricity based on Glycine sodium
Solve plasma membrane.
Second object of the present invention is to provide the preparation method of a kind of polyelectrolyte film based on Glycine sodium.
Third object of the present invention is to provide the application of above-mentioned polyelectrolyte film.
The purpose of the present invention implements by the following technical programs:
A kind of polyelectrolyte film based on Glycine sodium, this film is made up of polyether-polyamide block copolymer and Glycine sodium, its
In, polyether-polyamide block copolymer and the mass ratio 1:(0.01-0.4 of Glycine sodium).
Further, the thickness of polyelectrolyte film based on Glycine sodium is 115-150 μm.
The preparation method of above-mentioned polyelectrolyte film based on Glycine sodium, comprises the steps:
(1) Glycine sodium solvent dissolves, and obtains sodium glycinate solution；
(2) polyether-polyamide block copolymer solvent dissolves, and obtains polyether-polyamide block copolymer solution；
(3) sodium glycinate solution is mixed with polyether-polyamide block copolymer solution, curtain coating, it is dried to obtain described based on sweet
The polyelectrolyte film of propylhomoserin sodium.
Further, the solvent in step (1) be mass fraction be the ethanol water of 70%, Glycine sodium and solvent
Mass ratio is 1:(10-100).
Further, the solvent in step (2) be mass fraction be the ethanol water of 70%, polyether-polyamide block is common
The mass percent concentration of copolymer solution is 1-7%.
The polyelectrolyte film based on Glycine sodium obtained by said method can be used for separating mixed gas, further
, polyelectrolyte film CO in Selective Separation gas2, it is preferred that polyelectrolyte film is used for separating CO2/CH4Gaseous mixture
Body, its CO2Flux is 380-1125barrer(1barrer=10-10 cm3 cm/cm2S cmHg), CO2/CH4Selectivity is
30-43；For separating CO2/N2Mixed gas, its CO2Flux is 389-1201barrer, CO2/N2Selectivity is 50-84.
A kind of based on Glycine sodium the polyelectrolyte film that the present invention provides, its preparation process is simple, in polyelectrolyte film
Owing to containing Glycine sodium, the high water absorption character of Glycine sodium and salting-out effect, improve poly-electrolytic film gas separating property, and
The use prices of raw materials are low in cost and easily available, have potential industrial applications prospect.
Accompanying drawing explanation
Fig. 1 is the scanning electron microscope sectional drawing of the polyelectrolyte film based on Glycine sodium obtained by embodiment 1；
Fig. 2 is the scanning electron microscope sectional drawing of the polyelectrolyte film based on Glycine sodium obtained by embodiment 2；
Fig. 3 is the scanning electron microscope sectional drawing of the polyelectrolyte film based on Glycine sodium obtained by embodiment 3；
Fig. 4 is the scanning electron microscope sectional drawing of the polyelectrolyte film based on Glycine sodium obtained by embodiment 4；
Fig. 5 is the scanning electron microscope sectional drawing of the polyether-polyamide block copolymer film obtained by comparative example.
Detailed description of the invention
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are illustrated, it will be appreciated that preferred reality described herein
Execute example be merely to illustrate and explain the present invention, be not intended to limit the present invention.
Raw material used by the present invention is market can obtain product, the wherein trade name of polyether-polyamide block copolymer
Pebax® 1657。
Embodiment 1
Preparing a kind of polyelectrolyte film based on Glycine sodium, the thickness of this polyelectrolyte film is 115 μm, this polyelectrolyte film with
Polyether-polyamide block copolymer is membrane matrix, adds Glycine sodium, wherein, polyether-polyamide block copolymerization in membrane matrix
Thing and the mass ratio 1:0.05 of Glycine sodium, the preparation method of this polyelectrolyte film is as follows:
Step 1, the preparation of sodium glycinate solution:
In sample cell, add the ethanol water 5g that mass fraction is 70%, weigh 0.05g Glycine sodium, add above-mentioned sample
In pipe, shake up, until Glycine sodium dissolves, obtain sodium glycinate solution；
Step 2, the preparation of polyether-polyamide block copolymer solution:
Weigh 1.0g polyether-polyamide block copolymer to be dissolved in the ethanol water that 19g mass fraction is 70%, at 80 DEG C
Stirring 24h so that polyether-polyamide block copolymer is all dissolved, and preparing mass fraction is 5% polyether-polyamide block
Copolymer solution, standby.
Step 3, the preparation of polyelectrolyte film:
The mass fraction that the sodium glycinate solution that step 1 prepares is joined step 2 prepared is 5% polyether-polyamide block copolymerization
In thing solution, stir 24h at room temperature, be poured on the glass plate of cleaning and be cast, be dried at room temperature for 24h, then put
Enter 24h in 40 DEG C of vacuum drying ovens and, to remove the solvent of residual, obtain the polyelectrolyte film that thickness is 115 μm.
Embodiment 2
Prepare a kind of polyelectrolyte film based on Glycine sodium, with embodiment 1 polyelectrolyte film except that: the thickness of film is
128 μm, wherein, the mass ratio 1:0.1 of polyether-polyamide block copolymer and Glycine sodium, the preparation of this polyelectrolyte film with
Being different only in that of the preparation method of embodiment 1: in step 1, will weigh 0.05g Glycine sodium and become weighing 0.1g glycine
Sodium；In step 3, finally give the polyelectrolyte film that thickness is 128 μm.
Embodiment 3
Prepare a kind of polyelectrolyte film based on Glycine sodium, with embodiment 1 polyelectrolyte film except that: the thickness of film is
143 μm, wherein, the mass ratio 1:0.15 of polyether-polyamide block copolymer and Glycine sodium, the preparation of this polyelectrolyte film with
Being different only in that of the preparation method of embodiment 1: in step 1, will weigh 0.05g Glycine sodium and become weighing 0.15g glycine
Sodium；In step 3, finally give the polyelectrolyte film that thickness is 143 μm.
Embodiment 4
Prepare a kind of polyelectrolyte film based on Glycine sodium, with embodiment 1 polyelectrolyte film except that: the thickness of film is
150 μm, wherein, the mass ratio 1:0.2 of polyether-polyamide block copolymer and Glycine sodium, the preparation of this polyelectrolyte film with
Being different only in that of the preparation method of embodiment 1: in step 1, will weigh 0.05g Glycine sodium and become weighing 0.2g glycine
Sodium；In step 3, finally give the polyelectrolyte film that thickness is 150 μm.
Embodiment 5
Prepare a kind of polyelectrolyte film based on Glycine sodium, with embodiment 1 polyelectrolyte film except that: the thickness of film is
146 μm, wherein, the mass ratio 1:0.3 of polyether-polyamide block copolymer and Glycine sodium, the preparation of this polyelectrolyte film with
Being different only in that of the preparation method of embodiment 1: in step 1, will weigh 0.05g Glycine sodium and become weighing 0.3g glycine
Sodium；In step 2, change into 1.0g polyether-polyamide block copolymer being dissolved in the ethanol water that 14g mass fraction is 70%
In, change 36h into 80 DEG C of mixings time, obtaining mass fraction is 6.7% polyether-polyamide block copolymer solution；In step 3,
Being joined by sodium glycinate solution in polyether-polyamide block copolymer solution, under room temperature, mixing time changes 36h into, final
To the polyelectrolyte film that thickness is 146 μm.
Embodiment 6
Prepare a kind of polyelectrolyte film based on Glycine sodium, with embodiment 1 polyelectrolyte film except that: the thickness of film is
140 μm, wherein, the mass ratio 1:0.4 of polyether-polyamide block copolymer and Glycine sodium, the preparation of this polyelectrolyte film with
Being different only in that of the preparation method of embodiment 1: in step 1, will weigh 0.05g Glycine sodium and become weighing 0.4g glycine
Sodium；In step 2, change into 1.0g polyether-polyamide block copolymer being dissolved in the ethanol water that 49g mass fraction is 70%
In, change 48h into 80 DEG C of mixings time, obtaining mass fraction is 2% polyether-polyamide block copolymer solution；In step 3, will
Sodium glycinate solution joins in polyether-polyamide block copolymer solution, and under room temperature, mixing time changes 48h into, finally gives
Thickness is the polyelectrolyte film of 140 μm.
Comparative example
Preparation polyether-polyamide block copolymer film, its thickness is 100 μm；Its preparation method is: weigh 1.0g polyethers-polyamides
Amine block copolymer is dissolved in the ethanol water that 20g mass fraction is 70%, after 80 DEG C of stirring 24h, is poured into cleaning
It is cast on glass plate, is dried at room temperature for 24h, then put it into 24h in 40 DEG C of vacuum drying ovens and, to remove the solvent of residual, obtain
To the polyelectrolyte film that thickness is 100 μm.
The polyether-polyamide block copolymer film that the polyelectrolyte film obtained with embodiment and comparative example obtain is for mixing
The separation test of gas, test is carried out under the conditions of room temperature, 2bar, and the result of the test obtained see table:
Compared by the above embodiments and comparative example, it can be seen that the separating property of the polyelectrolyte film of the present invention is obvious
Higher than the performance of the polyether-polyamide block copolymer film without Glycine sodium in comparative example, the mainly height of Glycine sodium
Water absorption character and salting-out effect improve permeability of the membrane and selectivity.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to aforementioned reality
Executing example to be described in detail the present invention, for a person skilled in the art, it still can be to aforementioned each enforcement
Technical scheme described in example is modified, or wherein portion of techniques feature is carried out equivalent.All essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (8)
1. a polyelectrolyte film based on Glycine sodium, this film is made up of polyether-polyamide block copolymer and Glycine sodium,
Wherein, polyether-polyamide block copolymer and the mass ratio 1:(0.01-0.4 of Glycine sodium).
Polyelectrolyte film based on Glycine sodium the most according to claim 1, it is characterised in that described based on glycine
The thickness of the polyelectrolyte film of sodium is 115-150 μm.
3. the preparation method of polyelectrolyte film based on Glycine sodium described in claim 1 or 2, it is characterised in that include as follows
Step:
(1) Glycine sodium solvent dissolves, and obtains sodium glycinate solution；
(2) polyether-polyamide block copolymer solvent dissolves, and obtains polyether-polyamide block copolymer solution；
(3) sodium glycinate solution is mixed with polyether-polyamide block copolymer solution, curtain coating, it is dried to obtain described based on sweet
The polyelectrolyte film of propylhomoserin sodium.
The preparation method of polyelectrolyte film based on Glycine sodium the most according to claim 3, it is characterised in that step
(1) solvent in be mass fraction be the mass ratio of the ethanol water of 70%, Glycine sodium and solvent be 1:(10-100).
The preparation method of polyelectrolyte film based on Glycine sodium the most according to claim 3, it is characterised in that step
(2) solvent in be mass fraction be the ethanol water of 70%, the mass percent of polyether-polyamide block copolymer solution
Concentration is 1-7%.
6. the polyelectrolyte film based on Glycine sodium described in claim 1 is for the membrance separation of gas.
Application the most according to claim 6, it is characterised in that described polyelectrolyte film based on Glycine sodium is used for selecting
CO in selecting property separation gas2。
Application the most according to claim 7, it is characterised in that described polyelectrolyte film is used for separating CO2/CH4Gaseous mixture
Body, CO2/CH4Selectivity is 30-43；Described polyelectrolyte film is used for separating CO2/N2Mixed gas, CO2/N2Selectivity is 50-
84。
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106975372A (en) * | 2017-04-18 | 2017-07-25 | 石河子大学 | The mixed substrate membrane containing nano-grade molecular sieve and preparation method and application filled based on flaky material |
| CN107875867A (en) * | 2017-11-09 | 2018-04-06 | 石河子大学 | A kind of faciliated diffusion film based on amino acid ion liquid and its preparation method and application |
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| CN106975372B (en) * | 2017-04-18 | 2019-09-27 | 石河子大学 | Mixed substrate membrane containing nano-grade molecular sieve and preparation method and application based on flaky material filling |
| CN107875867A (en) * | 2017-11-09 | 2018-04-06 | 石河子大学 | A kind of faciliated diffusion film based on amino acid ion liquid and its preparation method and application |
| CN107875867B (en) * | 2017-11-09 | 2020-02-07 | 石河子大学 | Transfer-promoting membrane based on amino acid ionic liquid and preparation method and application thereof |
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