JPS6339612A - Production of composite membrane for separating gas - Google Patents
Production of composite membrane for separating gasInfo
- Publication number
- JPS6339612A JPS6339612A JP18294386A JP18294386A JPS6339612A JP S6339612 A JPS6339612 A JP S6339612A JP 18294386 A JP18294386 A JP 18294386A JP 18294386 A JP18294386 A JP 18294386A JP S6339612 A JPS6339612 A JP S6339612A
- Authority
- JP
- Japan
- Prior art keywords
- porous support
- membrane
- organic solvent
- porous
- gas separation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000012528 membrane Substances 0.000 title claims abstract description 50
- 239000002131 composite material Substances 0.000 title claims description 17
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 238000000034 method Methods 0.000 claims abstract description 25
- 239000003960 organic solvent Substances 0.000 claims abstract description 14
- 238000005266 casting Methods 0.000 claims abstract description 5
- 229920002492 poly(sulfone) Polymers 0.000 claims abstract description 5
- 238000000926 separation method Methods 0.000 claims description 40
- 239000004695 Polyether sulfone Substances 0.000 claims description 6
- 229920006393 polyether sulfone Polymers 0.000 claims description 6
- 239000011148 porous material Substances 0.000 abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 4
- 150000001335 aliphatic alkanes Chemical class 0.000 abstract description 2
- 239000011800 void material Substances 0.000 abstract 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 21
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 15
- 239000002904 solvent Substances 0.000 description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 9
- 239000001301 oxygen Substances 0.000 description 9
- 229910052760 oxygen Inorganic materials 0.000 description 9
- 239000010409 thin film Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 5
- 238000003892 spreading Methods 0.000 description 5
- 239000004721 Polyphenylene oxide Substances 0.000 description 4
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 235000019441 ethanol Nutrition 0.000 description 3
- 229920006380 polyphenylene oxide Polymers 0.000 description 3
- 239000005062 Polybutadiene Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 238000007602 hot air drying Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229920002857 polybutadiene Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 150000001924 cycloalkanes Chemical class 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920005597 polymer membrane Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 125000000020 sulfo group Chemical group O=S(=O)([*])O[H] 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、混合気体の分離濃縮を行なう気体分離用複合
膜の製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for manufacturing a composite membrane for gas separation that separates and concentrates a mixed gas.
従来の技術
近年、有機高分子を用いた気体分離膜が数多く提案され
ている。特に空気からの酸素富化が注目されておシ、空
気中から酸素を効率よく安価に分離濃縮できるならば、
燃焼分野、汚泥処理、健康・医療機器等に大いに貢献で
きると期待されている。BACKGROUND OF THE INVENTION In recent years, many gas separation membranes using organic polymers have been proposed. In particular, oxygen enrichment from air is attracting attention, and if oxygen can be efficiently and inexpensively separated and concentrated from the air,
It is expected that it will greatly contribute to the combustion field, sludge treatment, health and medical equipment, etc.
特に高分子膜を利用した分離方法は、省資源、省エネル
ギーの点からも強く要望され、酸素富化空気の利用の実
現が早く、効果の著しいと思われる燃焼炉や窯業炉等に
は最適である。In particular, separation methods using polymer membranes are strongly desired from the viewpoint of resource and energy conservation, and are ideal for combustion furnaces and ceramic furnaces, where the use of oxygen-enriched air can be realized quickly and is considered to be highly effective. be.
このような分離膜として、ポリシロキサン−ポリカーボ
ネート共重合体（特開昭５１−１２１４８５号公報）ポ
リシロキサ／共重合体（特開昭５６−２６５０４号公報
）等がある。しかし、これらはシリコーンを主成分とし
たものであυ確かに透過係数は大きいが、分離係数が小
さい。例えばオルガノシロキサン−ポリカーボネート共
重合体での酸素の透過係数は１０〜１０ （ＣＣ−ｃ
ｒｖ’ｃｒｔｌ・％・（７）Ｈｑ）と大きいが酸素分離
係数（Ｐｏ２／ＰＮ２）は２．０〜２．４と小さい。よ
って、３０％前後の濃度であり限界である。Examples of such separation membranes include polysiloxane-polycarbonate copolymer (JP-A-51-121485) and polysiloxa/copolymer (JP-A-56-26504). However, these are mainly composed of silicone and have a large transmission coefficient, but a small separation coefficient. For example, the oxygen permeability coefficient of organosiloxane-polycarbonate copolymer is 10 to 10 (CC-c
rv'crtl・%・(7)Hq), but the oxygen separation coefficient (Po2/PN2) is small, 2.0 to 2.4. Therefore, the concentration is around 30%, which is the limit.
最近では、酸素分離係数の高い、また薄膜化が可能な高
分子材料が見出されており、ポリ−４−メチル−ペンテ
ン−１，ポリフェニレンオキサイド、ポリスチレン、ポ
リブタジェン等が挙げられる。Recently, polymeric materials that have a high oxygen separation coefficient and can be made into thin films have been discovered, such as poly-4-methyl-pentene-1, polyphenylene oxide, polystyrene, and polybutadiene.
しかしながら、これら高分子材料は水面展開法により薄
膜を得ることはできるが、その機械的強度を保持する多
孔質支持体との接着が直接接着せず、多孔質支持体に接
着性の良い薄膜を形成し、その後、気体分離膜を接着さ
せる方法、あるいは、接着性の良い材料とプレノドし気
体分離膜とし接着する方法等があるが、これら方法では
、接着性の良好な材料では、例えばシリコーン系のもの
で、前述のように、分離係数があまシ高くなく、気体分
離膜の透過性能９分離性能が、シリコーン膜により、低
下する欠点がある。まだ、特願昭５９−８６４９５号に
は多孔質支持体に有機溶剤を含浸させ、その有機溶剤を
蒸発させて多孔質支持体に直接接着する方法が提示され
ているが有機溶剤が含浸された状態で引き上げると気体
分離膜は接着しておらず、蒸発させるまで時間が必要で
ある。However, although thin films of these polymeric materials can be obtained by the water surface spreading method, they do not adhere directly to the porous support that maintains their mechanical strength; There are methods such as forming a gas separation membrane and then adhering a gas separation membrane, or pre-coating with a material with good adhesiveness and adhering it to form a gas separation membrane. However, as mentioned above, the separation coefficient is not very high, and the separation performance of the gas separation membrane is reduced by the silicone membrane. However, Japanese Patent Application No. 59-86495 proposes a method of impregnating a porous support with an organic solvent, evaporating the organic solvent, and bonding directly to the porous support; If the gas separation membrane is pulled up in this state, it will not be adhered and it will take time for it to evaporate.
あるいは装置が大がかりになる等の欠点がちうた。Also, there are drawbacks such as the equipment being bulky.
発明が解決しようとする問題点
本発明の目的は、上記欠点を解消し、水面展開法により
得られる高分離性の気体分離膜を多孔質体上に容易に直
接接着することができ、かつ膜特性の良好な気体分離用
複合膜の製造方法を提供せんとするものである。Problems to be Solved by the Invention It is an object of the present invention to solve the above-mentioned drawbacks, to easily bond a high-separation gas separation membrane obtained by a water surface spreading method directly onto a porous body, and to The present invention aims to provide a method for manufacturing a composite membrane for gas separation with good properties.
問題点を解決するための手段
本発明は、上記目的を達成するため、多孔質支持体に有
機溶剤を、その空孔率に対して３０体積パーセントから
１００体積パーセント含有させた状態で、多孔質支持体
とは直接、接着することの困難な高分離性気体分離膜の
水面展開法で得た薄膜上に接触し、多孔質体上に直接気
体分離膜を接着させ複合膜を製造する方法である。Means for Solving the Problems In order to achieve the above object, the present invention provides a porous support in which an organic solvent is contained in the porous support at 30% to 100% by volume based on the porosity of the porous support. In this method, a composite membrane is manufactured by directly bonding a gas separation membrane onto a porous material by directly contacting a thin film obtained by a water surface spreading method of a high-separation gas separation membrane that is difficult to bond to a support. be.
本発明における多孔質支持体は、キヤステング法によシ
得られるものであり、特に片面に緻密層を有する異方性
多孔質体が適している。延伸法で得られる多孔質支持体
、例えばポリプロピレン多孔質体であれば、表裏の孔の
形状が同じであるため、溶剤の保持時間が短く、この方
法には適していない材料である。一方、キヤステング法
によシ全体が緻密層よシ形成される多孔質支持体は、逆
に溶剤が飛びにくいため、時間がかかシネ適当である。The porous support in the present invention is obtained by a casting method, and an anisotropic porous material having a dense layer on one side is particularly suitable. A porous support obtained by a stretching method, such as a polypropylene porous material, has pores of the same shape on the front and back, so the solvent retention time is short, and the material is not suitable for this method. On the other hand, in the case of a porous support whose entire surface is formed as a dense layer by the casting method, it is difficult for the solvent to be blown off, so it is time consuming and suitable for cine processing.
片面に緻密層を有し異方性多孔質体は、その緻密層表面
孔径が０．３μｍ以下であることが好ましい。０．３μ
ｍ以上の場合には耐圧等の関係により気体透過膜の膜厚
を厚くする方向になシ、透過量が低下するため好ましく
ない。The anisotropic porous body having a dense layer on one side preferably has a surface pore diameter of 0.3 μm or less. 0.3μ
If it is more than m, it is not preferable because the amount of permeation decreases as the thickness of the gas permeable membrane increases due to pressure resistance and the like.
このような多孔質支持体として、キヤステング法で得ら
れ、しかも、片面に緻密層を有する異方性の多孔質体と
して、ポリスルホン、ポリエーテルスルホン多孔質体を
挙げることができる。特にポリエーテルスルホン多孔質
体は耐溶剤性があるため適している。多孔質支持体の厚
み、空孔率は特に限定されるものでなく、ガレ−値が１
０〜１００秒／１０ｃｃのものが良好であり、１０秒／
ｃＣ以下であれば、緻密層が薄く溶剤が早く飛んでしま
い好ましくない。Examples of such porous supports include polysulfone and polyethersulfone porous bodies, which are anisotropic porous bodies obtained by the casteng method and have a dense layer on one side. In particular, polyether sulfone porous materials are suitable because of their solvent resistance. The thickness and porosity of the porous support are not particularly limited, and the Galley value is 1.
0 to 100 seconds/10cc is good, and 10 seconds/10cc is good.
If it is less than cC, the dense layer will be thin and the solvent will fly away quickly, which is not preferable.
１００秒／１ｏＣＣ以上であれば、多孔質支持体での圧
力損失が大きくなシ、気体分離膜の透過特性を低下させ
るため好ましくない。好ましくは２０〜８０秒／１０ｃ
ｃである。If it is 100 seconds/1oCC or more, it is not preferable because the pressure loss in the porous support is large and the permeation characteristics of the gas separation membrane are deteriorated. Preferably 20-80 seconds/10c
It is c.
多孔質支持体に含有させる有機溶剤としては、多孔質支
持体を溶解しない溶剤であれば特に限定されるものでは
ない。これら有機溶剤としては、ｎ−ヘキサン、ヘプタ
／シクロヘキサン等の脂肪族アルカン、および環状アル
カンが適している。The organic solvent contained in the porous support is not particularly limited as long as it does not dissolve the porous support. Suitable examples of these organic solvents include aliphatic alkanes such as n-hexane and hepta/cyclohexane, and cyclic alkanes.
特にポリエーテルスルホン多孔質支持体の場合について
は、ベンゼン、トルエン、キシレン等の芳香族、メタノ
ール、エタノール等のアルコールテも適している。これ
ら有機溶剤を多孔質支持体にその空孔率の３０体積パー
セントから１００％体積パーセント含有させた状態を形
成し、水面展開法で得た高分離性の気体分離膜に緻密層
側を接触させることによシ、容易に接着することができ
るものである。溶剤量が３０体積パーセント以下の場合
は、溶剤量が少なく接着できない。１００体積パーセン
ト以上であれば、多孔質支持体に濡れた状態で存在する
ため接着するまでに時間がかかる。この含有状態を形成
する方法は、有機溶剤に浸漬後風乾する方法、もしくは
溶剤の蒸気中にさらす方法等があるが特に限定するもの
ではない。Particularly in the case of polyethersulfone porous supports, aromatics such as benzene, toluene, xylene and alcohols such as methanol and ethanol are also suitable. A state is formed in which these organic solvents are contained in a porous support at a volume percent of 30% to 100% of the porosity of the porous support, and the dense layer side is brought into contact with a highly separable gas separation membrane obtained by a water surface development method. In particular, it is one that can be easily glued. If the amount of solvent is less than 30% by volume, the amount of solvent is too small to bond. If it is 100% by volume or more, it will take time to adhere to the porous support because it will exist in a wet state. Methods for forming this containing state include a method of immersing the material in an organic solvent and then air-drying it, a method of exposing it to vapor of a solvent, etc., but is not particularly limited.
また、高分離性を有する気体分離膜としては、ポリフェ
ニレンオキサイド、ポリ−４−メチルペンテ／−１、ポ
リブタジェン、ポリエチレン、ポリフマル酸エステル、
エチルセルロース、等ヲ挙げることができる。In addition, gas separation membranes with high separation properties include polyphenylene oxide, poly-4-methylpente/-1, polybutadiene, polyethylene, polyfumaric acid ester,
Ethyl cellulose, etc. can be mentioned.
作 用
この構成によシ、支持体には直接接着することのできな
かった高分離性の気体分離膜でも、片面に緻密層を有す
る異方性の多孔質体に、その空孔率の３０体積パーセン
トから１００体積パーセントの範囲で有機溶剤を含有さ
せ、多孔質体の緻密層側を水面展開法で得だ気体分離膜
上に接触するのみで容易に接着できる方法である。Function: Due to this structure, even a gas separation membrane with high separation properties that cannot be directly bonded to a support can be applied to an anisotropic porous body with a dense layer on one side, with a porosity of 30%. This is a method in which an organic solvent is contained in a range from 100% by volume to 100% by volume, and the dense layer side of the porous body can be easily bonded by simply contacting it on the gas separation membrane obtained by a water surface spreading method.
実施例 以下、実施例によシさらに具体的に説明する。Example Hereinafter, a more specific explanation will be given using examples.
（比較例１）
ポリ−４−メチルペンテン−１（ＴＰＸ三井東圧化学工
業■）をシクロヘキサノンに溶＄ １．２ｗｔ％溶液と
し、この溶液に、さらに７係のＴＨＦを添加した。この
溶液を水面上に展開し、薄膜を形成した。この薄膜上に
、キヤステング法で得たポリスルホン多孔質体の緻密層
側を静かに置き、引き上げだが、膜はそのまま水面上に
残り、接着することはできなかった。(Comparative Example 1) Poly-4-methylpentene-1 (TPX Mitsui Toatsu Chemical Industry ■) was dissolved in cyclohexanone to make a $1.2 wt% solution, and to this solution, 7 parts THF was further added. This solution was spread on the water surface to form a thin film. The dense layer side of the polysulfone porous material obtained by the casting method was gently placed on top of this thin film and pulled up, but the film remained on the water surface and could not be bonded.
（実施例１）
比較例１に用いたポリスルホ／多孔質体にエチルアルコ
ールの蒸気を含有させ、比較例１と同様の膜上に緻密層
側を静かに置き引き上げることにより、気体分離膜を多
孔質支持体上に得た。この時の多孔質体に含有する溶剤
の量をガスクロマトグラフ（島津製作所製ＧＣ−９Ａ）
で測定した結果、空孔率に対して、４６体積パーセント
であった。(Example 1) The polysulfo/porous material used in Comparative Example 1 was made to contain ethyl alcohol vapor, and the dense layer side was gently placed on the same membrane as in Comparative Example 1 and pulled up to form a porous gas separation membrane. obtained on a quality support. At this time, the amount of solvent contained in the porous body was measured using a gas chromatograph (GC-9A manufactured by Shimadzu Corporation).
As a result of measurement, the porosity was 46% by volume.
熱風乾燥後の得られた複合膜の酸素の透過秒数は、１ｏ
、１４ｃｄの膜面積で１．０ ＫｇＦ／ ｃａの圧力で
３．□ｆｅＪ／／ＣＱ分離係数（Ｆ○２／ＦＮ２）は、
３．８であシ、高分離性を有する複合膜を得た。The oxygen permeation time of the obtained composite membrane after hot air drying is 1o
, 3. at a pressure of 1.0 KgF/ca with a membrane area of 14 cd. □feJ//CQ separation coefficient (F○2/FN2) is
3.8, a composite membrane with high separation properties was obtained.
（比較例２）
比較例１のポリスルホン多孔質体の代わりに、ポリエー
テルスルホン多孔質体を使用し、同様な方法で膜との接
着を試みたが接着できなかった。(Comparative Example 2) A polyethersulfone porous material was used in place of the polysulfone porous material of Comparative Example 1, and an attempt was made to adhere it to the membrane in the same manner, but the adhesion was not possible.
（実施例２）
ポリエーテルスルホ／多孔質体をトルエン中に浸漬後、
トルエン溶液が多孔質体の表面からなくなる状態まで風
乾し、比較例１の膜上に緻密層側を静かに置き、引き上
げだところ複合膜を得た。(Example 2) After immersing the polyether sulfo/porous body in toluene,
The porous body was air-dried until the toluene solution disappeared from the surface of the porous body, the dense layer side was gently placed on the membrane of Comparative Example 1, and the porous body was pulled up to obtain a composite membrane.
この時の多孔質体に含有する溶剤の量は、空孔率に対し
て８１体積パーセントであった。さらに、熱風乾燥後の
得られた複合膜の特性は、実施例１と同様にして測定し
た結果、酸素透過秒数は２．６秒μ分離係数（Ｆ０２／
ＦＮ２）は４．０であった。The amount of solvent contained in the porous body at this time was 81% by volume based on the porosity. Furthermore, the properties of the obtained composite membrane after hot air drying were measured in the same manner as in Example 1, and as a result, the oxygen permeation time was 2.6 seconds μ separation coefficient (F02/
FN2) was 4.0.
（実施例３）
実施例２のトルエ／の代わりにヘキサ／分用いた。その
結果、同様に複合膜を得だ。この時のヘキサンの含有量
は、３２体積パーセントであったまだ複合膜の特性は実
施例１と同様にして測定した結果、実施例２と同様であ
った。(Example 3) Hex/min was used instead of toluene/min in Example 2. As a result, a composite membrane was similarly obtained. The content of hexane at this time was 32% by volume.However, the properties of the composite membrane were measured in the same manner as in Example 1, and as a result were found to be the same as in Example 2.
（実施例４）
実施例２のポリ−４−メチルペンテン−１の代わりにポ
リフェニレンオキサイドの膜材料をトルエン溶液に溶解
し、２．０ｗ ｔ％浴溶液した。この溶液を水面上に展
開し薄膜を形成した。ポリエーテルスルホン多孔質体を
メチルアルコール溶液に浸漬し、引き上げ風乾後、薄膜
の上に緻密層側を静かに置き、引き上げたところ複合膜
を得だ。この時の多孔質体に含有する溶剤の量は、空孔
率に対して６１体積パーセントであった。得られた複合
膜を熱風乾燥後、実施例１と同様にして測定した結果、
酸素透過秒数は４．３秒μ、分離係数（Ｆｏ２／ＦＮ２
）は４．０であった〇
以上のように、本発明で得られた複合膜はいずれも膜特
性の良好なものであった。(Example 4) A membrane material of polyphenylene oxide instead of poly-4-methylpentene-1 in Example 2 was dissolved in a toluene solution to form a 2.0 wt % bath solution. This solution was spread on the water surface to form a thin film. A porous polyether sulfone material was immersed in a methyl alcohol solution, pulled up and air-dried, then the dense layer side was gently placed on top of the thin film and pulled up to obtain a composite film. The amount of solvent contained in the porous body at this time was 61% by volume based on the porosity. After drying the obtained composite membrane with hot air, measurements were carried out in the same manner as in Example 1. As a result,
Oxygen permeation time is 4.3 secondsμ, separation coefficient (Fo2/FN2
) was 4.0 As shown above, all the composite membranes obtained in the present invention had good membrane properties.
発明の効果
本発明の気体分離用複合膜の製造方法は、水面展開法で
得られる接着性に乏しい高分子薄膜に片面に緻密層を有
する多孔質支持体に、その空孔率に対し有機溶剤を３０
体積パーセントから１００体積パフセントを含有させた
状態で接触させることにより、容易に接着ができ、従来
法に比べ、作業時間の短縮、連続製膜装置の簡易化が図
れ、しかも、分離膜と支持体の間に接着補助的な物質を
設ける必要がないため、分離膜の持つ特性を損うことな
く、極めて優れた性能を有する複合膜を得ることができ
るものである。Effects of the Invention The method for producing a composite membrane for gas separation according to the present invention is to apply an organic solvent to a porous support having a dense layer on one side of a polymer thin film with poor adhesion obtained by a water surface spreading method, depending on its porosity. 30
By contacting with a volume percentage of 100% to 100% by volume, bonding can be easily achieved, and compared to conventional methods, work time can be shortened and continuous membrane forming equipment can be simplified. Since there is no need to provide an adhesion auxiliary substance between the membranes, it is possible to obtain a composite membrane with extremely excellent performance without impairing the properties of the separation membrane.
Claims (3)
気体分離膜を前記多孔質支持体に接着する際に、前記多
孔質支持体に有機溶剤をその空孔率に対し、３０体積パ
ーセント〜１００体積パーセント含有させた状態で、前
記気体分離膜に接触させ、多孔質支持体に直接気体分離
膜を接着させることを特徴とする気体分離用複合膜の製
造方法。(1) Consisting of a porous support and a gas separation membrane, when adhering the gas separation membrane to the porous support, apply an organic solvent to the porous support at a volume of 30 vol. % to 100% by volume, the gas separation membrane is brought into contact with the porous support, and the gas separation membrane is bonded directly to the porous support.
緻密層を持つ多孔質体である特許請求の範囲第１項記載
の気体分離用複合膜の製造方法。(2) The method for producing a composite membrane for gas separation according to claim 1, wherein the porous support is a porous body obtained by a casting method and has a dense layer on one side.
ホンである特許請求の範囲第１項記載の気体分離用複合
膜の製造方法。(3) The method for producing a composite membrane for gas separation according to claim 1, wherein the porous support is polysulfone or polyethersulfone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18294386A JPS6339612A (en) | 1986-08-04 | 1986-08-04 | Production of composite membrane for separating gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18294386A JPS6339612A (en) | 1986-08-04 | 1986-08-04 | Production of composite membrane for separating gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6339612A true JPS6339612A (en) | 1988-02-20 |
Family
ID=16127078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18294386A Pending JPS6339612A (en) | 1986-08-04 | 1986-08-04 | Production of composite membrane for separating gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6339612A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5073175A (en) * | 1988-08-09 | 1991-12-17 | Air Products And Chemicals, Inc. | Fluorooxidized polymeric membranes for gas separation and process for preparing them |
-
1986
- 1986-08-04 JP JP18294386A patent/JPS6339612A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5073175A (en) * | 1988-08-09 | 1991-12-17 | Air Products And Chemicals, Inc. | Fluorooxidized polymeric membranes for gas separation and process for preparing them |
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