CN102489182A - Nonionic surfactant gel and gas separating membrane and preparation method thereof - Google Patents
Nonionic surfactant gel and gas separating membrane and preparation method thereof Download PDFInfo
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- CN102489182A CN102489182A CN2011104230102A CN201110423010A CN102489182A CN 102489182 A CN102489182 A CN 102489182A CN 2011104230102 A CN2011104230102 A CN 2011104230102A CN 201110423010 A CN201110423010 A CN 201110423010A CN 102489182 A CN102489182 A CN 102489182A
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Abstract
The invention relates to a nonionic surfactant gel and gas separating membrane and a preparation method thereof; the preparation method comprises the following technique steps, wherein the proportions of the ingredients are counted in parts by weight: (1) preparing suspension: stirring and blending 10-20 parts of polymer, 10-20 parts of nonionic surfactant and 60-80 parts of solvent for 3-6 h at a temperature of 20-60 DEG C and a stirring speed of 50-300 rpm to obtain uniform and transparent suspension; (2) scrapping the suspension on a glass plate through a stainless steel scrapping knife at a temperature of 20-50 DEG C to obtain liquid membrane with a thickness of 200-500 mum, and drying the liquid membrane in the air for 24-48 h to obtain the nonionic surfactant gel and gas separating membrane. The nonionic surfactant gel and gas separating membrane of the invention is formed with a gel-shaped structure by the polymer and the nonionic surfactant to obtain high gas permeability and separation selectivity and to obtain a good mechanical strength, so that the nonionic surfactant gel and gas separating membrane has an extensive industrial application prospect.
Description
Technical field
The present invention relates to a kind of non-ionic surface active agent gel gas separation membrane and preparation method thereof, belong to the membrane separation technique field.
Background technology
In recent years; Continuous reinforcement along with environmental protection consciousness; Separation and Recovery greenhouse gases carbon dioxide has become a focus of people's common concern, and as the main emission source of carbon dioxide, the carbon dioxide separation in the combustion of fossil fuel tail gas reclaims and especially receives publicity.At present, the method that is used for carbon dioxide separation mainly contains Physical Absorption method, physisorphtion, chemical absorption method, condensation at low temperature and gas membrane separation process.Wherein gas membrane Seperation Technology is a kind of new and high technology of succeeding in developing the eighties in 20th century, and its research and development has become the focus that countries in the world are competed in high-technology field.
Can be used for carbon dioxide separation and mainly contain supported liquid membrane technology, solid film technology and gel mould technology with the membrane technology that concentrates.Supported liquid membrane is made up of film liquid and polymer support body; Film liquid contains carrier; Carrier and carbon dioxide reaction are dissolved in the film liquid carbon dioxide; Under the promotion of pressure differential, concentration difference, the material that the reaction of carbon dioxide and carrier generates passes film, at the opposite side of film carbon dioxide is discharged.The gas diffusivity of supported liquid membrane is generally big than polymer film, and selectivity is higher, and still, under the elevated pressures difference, the fluid loss in the film is serious, and the mechanical stability and the stability of film are relatively poor.Solid film technology is finger macromolecule dense film mainly, and membrane material is of a great variety, and preparation technology is simple, studies membrane material more and that be suitable for carbon dioxide separation at present and mainly contains polyimides, cellulose acetate etc.Have a upper limit-Robeson upper limit between the gas-selectively of macromolecule dense film material and the permeability, show as membrane material contradiction is appearred in the selectivity of gas and the raising of permeation flux, this has limited the macromolecule gas separation membrane to a certain extent at CO
2Application in the isolation technics.Gel mould is emerging in recent years membrane technology, and its inside is the gel-like structure that polymer and functional liquid form, and has higher gas permeability and selectivity, and functional liquid is main with the ionic liquid that carbon dioxide is had very strong adsorption capacity mainly.
Summary of the invention
The objective of the invention is to overcome the deficiency that exists in the prior art; A kind of non-ionic surface active agent gel gas separation membrane and preparation method thereof is provided; Adopt polymer and non-ionic surface active agent to form gel-like structure; Have higher gas permeability and separation selectivity, have good mechanical strength simultaneously again.
According to technical scheme provided by the invention, a kind of non-ionic surface active agent gel gas separation membrane, characteristic is, comprises following component, the component ratio is counted by weight: 10～20 parts of polymer, 10～20 portions of non-ionic surface active agents, 60～80 parts of solvents; Said polymer is for gathering one or more the mixture in (ethylene-vinyl acetate), polymethyl ester methyl ester, the polypropylene ester methyl ester; Said non-ionic surface active agent is polysorbas20, Tween 80, span 20, sorbester p17, triton x-100 or Qu Latong X-114; Said solvent is oxolane, acetone, chloroform, ethyl ester ethyl ester or isopropyl acetate;
Polymer, non-ionic surface active agent and stirring solvent are mixed, obtain the preparation liquid of homogeneous transparent; The blade coating preparation liquid obtains liquid film on glass plate, with liquid film drying, promptly obtains described non-ionic surface active agent gel gas separation membrane.
The thickness of said non-ionic surface active agent gel gas separation membrane is 100～300 μ m.
The present invention also protects a kind of preparation method of non-ionic surface active agent gel gas separation membrane, and characteristic is, adopts following processing step, and its component ratio is counted by weight:
(1) preparation of preparation liquid: with 10～20 parts of polymer, 10～20 portions of non-ionic surface active agents and 60～80 parts of solvents under 20～60 ℃, mix 3～6 hours after, mixing speed is 50～300 rev/mins, obtains the preparation liquid of homogeneous transparent;
(2) on glass plate, adopt stainless steel scraper blade coating to obtain the liquid film that thickness is 200～500 μ m preparation liquid; The blade coating temperature is 20～50 ℃; With liquid film dry 24～48 hours of air at room temperature, promptly obtain described non-ionic surface active agent gel gas separation membrane.
Non-ionic surface active agent gel gas separation membrane of the present invention adopts polymer and non-ionic surface active agent to form gel-like structure; Can obtain higher gas permeability and separation selectivity; Has simultaneously good mechanical strength again; Have wide industrial applications prospect, advantage specific as follows:
1, the inside of said non-ionic surface active agent gel gas separation membrane is the gel-like structure that polymer and surfactant form, and can obtain higher gas permeability and separation selectivity;
2, the functional liquid in the said non-ionic surface active agent gel gas separation membrane is a non-ionic surface active agent, and it is cheap, to the high adsorption capacity of carbon dioxide;
3, the preparation method of said non-ionic surface active agent gel gas separation membrane adopts solvent evaporated method, and preparation technology is simple, and is easy to operate, and efficient is high, produces good reproducibility;
4, the structural controllability of said non-ionic surface active agent gel gas separation membrane is strong.
The specific embodiment
Below in conjunction with specific embodiment the present invention is described further.
Embodiment one: a kind of preparation method of non-ionic surface active agent gel gas separation membrane, adopt following processing step, and its component ratio is counted by weight:
(1) preparation of preparation liquid: gather (ethylene-vinyl acetate), 20 parts of polysorbas20s and 70 parts of oxolanes under 20 ℃ with 10 parts, mix 3 hours after, mixing speed is 300 rev/mins, obtains the preparation liquid of homogeneous transparent;
(2) on glass plate, adopt stainless steel scraper blade coating to obtain the liquid film that thickness is 500 μ m preparation liquid, the blade coating temperature is 20 ℃, with liquid film dry 48 hours of air at room temperature, promptly obtains described non-ionic surface active agent gel gas separation membrane.The thickness of said non-ionic surface active agent gel gas separation membrane is 300 μ m.
The gel gas separation membrane that embodiment one obtains is put into osmotic cell, under 20 ℃ of conditions with 0.1MPa, with pure CO2 and N
2Measure their gas permeability J respectively
iWith ideal selectivity α
I/j
Q in the formula (1)
iRefer to CO
2And N
2Volume flow under standard state, cm
3/ s; Δ P is a permeable pressure head, and unit is Pa; A is a membrane area, and unit is cm
2J
iBe gas permeability, unit is barrer:
J in the formula (2)
i, J
jBe gas permeability, unit is barrer, and subscript i and j refer to CO respectively
2And N
2
Recording the gel gas separation membrane is 316barrer to the permeability of carbon dioxide, and film is 32 to the selectivity of carbon dioxide and nitrogen.
Embodiment two: a kind of preparation method of non-ionic surface active agent gel gas separation membrane, adopt following processing step, and its component ratio is counted by weight:
(1) preparation of preparation liquid: with 20 parts of polymethyl methacrylates, 10 parts of Tween 80s and 70 parts of acetone under 30 ℃, mix 6 hours after, mixing speed is 50 rev/mins, obtains the preparation liquid of homogeneous transparent;
(2) on glass plate, adopt stainless steel scraper blade coating to obtain the liquid film that thickness is 200 μ m preparation liquid, the blade coating temperature is 50 ℃, with liquid film dry 48 hours of air at room temperature, promptly obtains described non-ionic surface active agent gel gas separation membrane.The thickness of said non-ionic surface active agent gel gas separation membrane is 100 μ m.
The gel gas separation membrane that embodiment two obtains is 225barrer to the permeability of carbon dioxide, and film is 64 to the selectivity of carbon dioxide and nitrogen.
Embodiment three: a kind of preparation method of non-ionic surface active agent gel gas separation membrane, adopt following processing step, and its component ratio is counted by weight:
(1) preparation of preparation liquid: with 20 parts of PMAs, 20 parts of span 20s and 60 parts of ethyl acetate under 40 ℃, mix 6 hours after, mixing speed is 300 rev/mins, obtains the preparation liquid of homogeneous transparent;
(2) on glass plate, adopt stainless steel scraper blade coating to obtain the liquid film that thickness is 300 μ m preparation liquid, the blade coating temperature is 50 ℃, with liquid film dry 48 hours of air at room temperature, promptly obtains described non-ionic surface active agent gel gas separation membrane.The thickness of said non-ionic surface active agent gel gas separation membrane is 200 μ m.
The gel gas separation membrane that embodiment three obtains is 347barrer to the permeability of carbon dioxide, and film is 54 to the selectivity of carbon dioxide and nitrogen.
Embodiment four: a kind of preparation method of non-ionic surface active agent gel gas separation membrane, adopt following processing step, and its component ratio is counted by weight:
(1) preparation of preparation liquid: gather (ethylene-vinyl acetate), 10 parts of sorbester p17s and 80 parts of chloroforms under 40 ℃ with 10 parts, mix 6 hours after, mixing speed is 2300 rev/mins, obtains the preparation liquid of homogeneous transparent;
(2) on glass plate, adopt stainless steel scraper blade coating to obtain the liquid film that thickness is 200 μ m preparation liquid, the blade coating temperature is 50 ℃, with liquid film dry 48 hours of air at room temperature, promptly obtains described non-ionic surface active agent gel gas separation membrane.The thickness of said non-ionic surface active agent gel gas separation membrane is 100 μ m.
The gel gas separation membrane that embodiment four obtains is 389barrer to the permeability of carbon dioxide, and film is 43 to the selectivity of carbon dioxide and nitrogen.
Embodiment five: a kind of preparation method of non-ionic surface active agent gel gas separation membrane, adopt following processing step, and its component ratio is counted by weight:
(1) preparation of preparation liquid: gather (ethylene-vinyl acetate), 10 parts of triton x-100s and 80 parts of isopropyl acetates under 60 ℃ with 10 parts, mix 6 hours after, mixing speed is 100 rev/mins, obtains the preparation liquid of homogeneous transparent;
(2) on glass plate, adopt stainless steel scraper blade coating to obtain the liquid film that thickness is 200 μ m preparation liquid, the blade coating temperature is 40 ℃, with liquid film dry 48 hours of air at room temperature, promptly obtains described non-ionic surface active agent gel gas separation membrane.The thickness of said non-ionic surface active agent gel gas separation membrane is 100 μ m.
The gel gas separation membrane that embodiment five obtains is 460barrer to the permeability of carbon dioxide, and film is 66 to the selectivity of carbon dioxide and nitrogen.
Embodiment six: a kind of preparation method of non-ionic surface active agent gel gas separation membrane, adopt following processing step, and its component ratio is counted by weight:
(1) preparation of preparation liquid: gather (ethylene-vinyl acetate), 5 parts of polymethyl methacrylates, 10 parts of Qu Latong X-114 and 80 parts of oxolanes under 40 ℃ with 5 parts; After mixing 6 hours; Mixing speed is 300 rev/mins, obtains the preparation liquid of homogeneous transparent;
(2) on glass plate, adopt stainless steel scraper blade coating to obtain the liquid film that thickness is 200 μ m preparation liquid, the blade coating temperature is 40 ℃, with liquid film dry 24 hours of air at room temperature, promptly obtains described non-ionic surface active agent gel gas separation membrane.The thickness of said non-ionic surface active agent gel gas separation membrane is 100 μ m.
It is 437barrer to the permeability of carbon dioxide that embodiment six obtains the gel gas separation membrane, and film is 54 to the selectivity of carbon dioxide and nitrogen.
Claims (3)
1. a non-ionic surface active agent gel gas separation membrane is characterized in that, comprise following component, the component ratio is counted by weight: 10～20 parts of polymer, 10～20 portions of non-ionic surface active agents, 60～80 parts of solvents; Said polymer is for gathering one or more the mixture in (ethylene-vinyl acetate), polymethyl ester methyl ester, the polypropylene ester methyl ester; Said non-ionic surface active agent is polysorbas20, Tween 80, span 20, sorbester p17, triton x-100 or Qu Latong X-114; Said solvent is oxolane, acetone, chloroform, ethyl ester ethyl ester or isopropyl acetate;
Polymer, non-ionic surface active agent and stirring solvent are mixed, obtain the preparation liquid of homogeneous transparent; The blade coating preparation liquid obtains liquid film on glass plate, with liquid film drying, promptly obtains described non-ionic surface active agent gel gas separation membrane.
2. non-ionic surface active agent gel gas separation membrane as claimed in claim 1 is characterized in that: the thickness of said non-ionic surface active agent gel gas separation membrane is 100～300 μ m.
3. the preparation method of a non-ionic surface active agent gel gas separation membrane is characterized in that, adopts following processing step, and its component ratio is counted by weight:
(1) preparation of preparation liquid: with 10～20 parts of polymer, 10～20 portions of non-ionic surface active agents and 60～80 parts of solvents under 20～60 ℃, mix 3～6 hours after, mixing speed is 50～300 rev/mins, obtains the preparation liquid of homogeneous transparent;
(2) on glass plate, adopt stainless steel scraper blade coating to obtain the liquid film that thickness is 200～500 μ m preparation liquid; The blade coating temperature is 20～50 ℃; With liquid film dry 24～48 hours of air at room temperature, promptly obtain described non-ionic surface active agent gel gas separation membrane.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103599712A (en) * | 2013-11-08 | 2014-02-26 | 江南大学 | Novel polyether copolyamide gel membrane and preparation method thereof |
| CN105879723A (en) * | 2014-12-16 | 2016-08-24 | 江南大学 | Chitosan/nonionic surfactant cross-linked gel film with sandwich structure and preparation method thereof |
| WO2017143832A1 (en) * | 2016-02-22 | 2017-08-31 | 深圳市启德环保科技有限公司 | Pressure-resistant porous macromolecular pmma filter membrane material |
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| CN101108314A (en) * | 2006-07-21 | 2008-01-23 | 谭德粹 | Method of preparing polyethersulfone millipore filter membrane strengthened formed pore and use thereof |
| US20110147300A1 (en) * | 2008-09-01 | 2011-06-23 | Tianjin Polytechnic University | Composition for preparation of hollow fiber porous membrane and preparation method using the same |
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| US5141530A (en) * | 1991-08-22 | 1992-08-25 | The Dow Chemical Company | Polycarbonate, polyester, and polyestercarbonate semi-permeable gas separation membranes possessing improved gas selectivity and recovery, and processes for making and using the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103599712A (en) * | 2013-11-08 | 2014-02-26 | 江南大学 | Novel polyether copolyamide gel membrane and preparation method thereof |
| CN105879723A (en) * | 2014-12-16 | 2016-08-24 | 江南大学 | Chitosan/nonionic surfactant cross-linked gel film with sandwich structure and preparation method thereof |
| CN105879723B (en) * | 2014-12-16 | 2019-10-11 | 江南大学 | A kind of sandwich structure chitosan/nonionic surfactant cross-linked gel film and preparation method thereof |
| WO2017143832A1 (en) * | 2016-02-22 | 2017-08-31 | 深圳市启德环保科技有限公司 | Pressure-resistant porous macromolecular pmma filter membrane material |
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