JP5432118B2 - 微多孔膜の形成方法 - Google Patents
微多孔膜の形成方法 Download PDFInfo
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Images
Classifications
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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
-
- 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
- B01D67/0009—Organic membrane manufacture by phase separation, sol-gel transition, evaporation or solvent quenching
- B01D67/0013—Casting processes
-
- 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
- B01D67/0009—Organic membrane manufacture by phase separation, sol-gel transition, evaporation or solvent quenching
- B01D67/0016—Coagulation
- B01D67/00165—Composition of the coagulation baths
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/12—Composite membranes; Ultra-thin membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2323/00—Details relating to membrane preparation
- B01D2323/219—Specific solvent system
- B01D2323/22—Specific non-solvents or non-solvent system
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2323/00—Details relating to membrane preparation
- B01D2323/42—Details of membrane preparation apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/02—Details relating to pores or porosity of the membranes
- B01D2325/022—Asymmetric membranes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
- Y10T428/249978—Voids specified as micro
- Y10T428/24998—Composite has more than two layers
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Medicinal Preparation (AREA)
Description
式中、xは1〜25であって;R1、R3は、H又はCnH2n+1であり、ここでn=1〜5であって、R2はCnH2nである(n=1〜8)。R1及びR3は同じであっても異なっていてもよい。
シリンジポンプ(PHD 2000モデル;マサチューセッツ州ホリストン(Holliston)のハーバードアパレイタス社(Harvard Apparatus))によって、ドープ配合物及び凝固剤配合物を図1の多層押出金型(米国特許出願公開第2007/0128425号)に供給し、ここでシリンジポンプは、5〜40mL/分の範囲の体積流量で多層押出金型の空隙に供給されるドープ配合物及び凝固剤配合物を計量するのに使用した。
シリンジポンプ(PHD 2000モデル;マサチューセッツ州ホリストン(Holliston)のハーバードアパレイタス社(Harvard Apparatus))によって、ドープ配合物及び第1の凝固剤配合物を図1の多層押出金型(米国特許出願公開第2007/0128425号)に供給し、ここでシリンジポンプは、5〜40mL/分の範囲の体積流量で多層押出金型の空隙に供給されるドープ配合物及び第1の凝固剤配合物を計量するのに使用した。
実施例2と同じ装置配列を使用して、多層押出金型にドープ配合物及び第1の凝固剤配合物を供給した。
1. ミクロ構造を有する微多孔膜シートの形成方法であって、a)ポリマー材料及び溶媒を含むドープ配合物を提供する工程と、b)第1の凝固剤及び第1のコーティング補助剤を含む第1の凝固剤配合物を提供する工程、及びc)前記第1の凝固剤配合物と前記ドープ配合物との間に境界面を形成する条件下において、第1表面を有するドープ配合物層及び第1の凝固剤配合物層を同時キャストする工程、を含み、前記境界面が、前記ドープ配合物層の前記第1表面と向かい合っており、前記第1の凝固剤配合物の一部が、前記境界面を通して前記ドープ配合物に拡散して第1の転相が起こり、それによって第1のミクロ構造を有する膜が形成される、方法。
2. 前記第1表面と蒸気である第2の凝固剤とを接触させる工程を更に含み、前記第2の凝固剤が、前記第1表面を介して前記ドープ配合物に拡散して第2の転相が起こり、それによって第2のミクロ構造が形成される、態様1に記載の方法。
3. 前記第1のミクロ構造が、前記第2のミクロ構造とは異なる、態様2に記載の方法。
4. 前記第1のミクロ構造の深さが、膜厚の5〜95パーセントの範囲内である、態様2に記載の方法によって形成される微多孔膜シート。
5. 前記第2のミクロ構造の深さが、膜厚の5〜95パーセントの範囲内である、態様2に記載の方法によって形成される微多孔膜シート。
6. 第2の凝固剤配合物を更に含み、前記第2の凝固剤配合物が、第3の凝固剤及び第2のコーティング補助剤を含む、態様1に記載の方法。
7. 前記第2の凝固剤配合物が、前記ドープ配合物及び前記第1の凝固剤配合物と同時キャストされ、前記第2の凝固剤配合物が、前記ドープ配合物層の前記第1表面上でキャストされ、前記第2の凝固剤配合物の一部が、前記ドープ配合物に拡散して第2の転相が起こり、それによって第2のミクロ構造が形成される、態様6に記載の方法。
8. 前記第2の凝固剤配合物が、前記ドープ配合物層の前記第1表面上で続けてキャストされる、態様6に記載の方法。
9. 溶媒を除去する工程、及び膜を乾燥する工程を更に含む、態様1に記載の方法。
10. 前記方法が、凝固浴を用いずに行われる、態様1に記載の方法。
11. 少なくとも2つのドープ配合物及び少なくとも2つの凝固剤配合物を含む、態様1に記載の方法。
12. 前記ポリマー材料が、ポリエーテルスルホン、ポリエーテルイミド、ナイロン及びこれらの組み合わせからなる群から選択される、態様1に記載の方法。
13. 前記溶媒が、水、アミド、アルコール、脂肪族アルコール及びこれらの組み合わせからなる群から選択される、態様1に記載の方法。
14. 前記ドープ配合物の前記ポリマー材料の濃度が、10〜25重量パーセントの範囲内である、態様1に記載の方法。
15. 前記第1のコーティング補助剤が、ポリ(エチレングリコール)、ポリエーテル及びこれらの組み合わせからなる群から選択される、態様1に記載の方法。
16. 前記第1のコーティング補助剤の濃度が、20〜95重量パーセントの範囲内である、態様1に記載の方法。
17. 前記同時キャストが、多層押出金型によって達成される、態様1に記載の方法。
18. 前記ドープ配合物が、0.02Pa・s〜4Pa・s(20〜4,000センチポアズ)の範囲内の粘度を有する、態様1に記載の方法。
19. 前記第1の凝固剤配合物が、0.02Pa・s〜4Pa・s(20〜4,000センチポアズ)の範囲内の粘度を有する、態様1に記載の方法。
20. 対向する第1表面及び第2表面を有し、2つの多孔性のミクロ構造を有することで特徴化されるポリマー膜であって、第1のミクロ構造が、前記第1表面に最も近く、厚さ方向に伸びる平行に伸びた円筒形の孔を含み、第2のミクロ構造が、前記第2表面に最も近く、楕円形の孔を含み、前記第1のミクロ構造及び第2のミクロ構造の一部が、それぞれ第1表面及び第2表面において開放されている、ポリマー膜シート。
21. 前記第1のミクロ構造の深さが、厚さ方向の5〜95パーセントの範囲内である、態様20に記載のポリマー膜シート。
22. 前記第2のミクロ構造の深さが、厚さ方向の5〜95パーセントの範囲内である、態様20に記載のポリマー膜シート。
本発明の範囲及び趣旨から逸脱することなく本発明の様々な修正形態及び変更形態が、当業者には、明らかとなろう。また、本発明は、本明細書に記載した例示的な要素に限定されないことが理解されるべきである。
Claims (4)
- ミクロ構造を有する微多孔膜シートの形成方法であって、
a)ポリマー材料及び溶媒を含むドープ配合物を提供する工程と、
b)第1の凝固剤及びポリ(エチレングリコール)、多価化合物、ポリエーテル及びこれらの組み合わせからなる群から選択される第1のコーティング補助剤を含む第1の凝固剤配合物を提供する工程、
c)前記第1の凝固剤配合物と前記ドープ配合物との間に境界面を形成する条件下において、多層押出金型による共押出およびライナー上への多層コーティングによって、第1表面を有するドープ配合物層及び第1の凝固剤配合物層を同時キャストする工程、及び
d)前記第1表面と、50%〜60%の相対湿度の水の蒸気である第2の凝固剤とを接触させる工程
を含み、
前記境界面が、前記ドープ配合物層の前記第1表面の反対側にあり、
前記第1の凝固剤配合物の一部が、前記境界面を通して前記ドープ配合物に拡散して第1の転相が起こり、それによって第1のミクロ構造を有する膜が形成され、
前記ポリマー材料が、ポリエーテルスルホン、ポリエーテルイミド、ナイロン及びこれらの組み合わせからなる群から選択され、
前記第1の凝固剤が、水、アルコール、エーテル、オリゴアルキレンオキシド、ポリアルキレンオキシド及びこれらのエーテルからなる群から選択され、
前記第2の凝固剤が、前記第1表面を介して前記ドープ配合物に拡散して第2の転相が起こり、それによって第2のミクロ構造が形成され、且つ
前記第1のミクロ構造が、前記第2のミクロ構造とは異なる、
方法。 - 第2の凝固剤配合物を更に含み、前記第2の凝固剤配合物が第3の凝固剤及び第2のコーティング補助剤を含み、前記第2の凝固剤配合物が前記ドープ配合物及び前記第1の凝固剤配合物と同時キャストされ、前記第2の凝固剤配合物が前記ドープ配合物層の前記第1表面上でキャストされ、前記第2の凝固剤配合物の一部が前記ドープ配合物に拡散して第2の転相が起こり、それによって第2のミクロ構造が形成される、請求項1に記載の方法。
- 前記ポリマー材料がポリエーテルスルホン、ポリエーテルイミド、ナイロン及びこれらの組み合わせからなる群から選択され、前記溶媒がジメチルホルムアミド、N,N−ジメチルアセトアミド、N−メチル−2−ピロリジノン、テトラメチル尿素、アセトン、メチルエチルケトン、酢酸メチル、酢酸エチル及び他の酢酸アルキル、ジメチルスルホキシド及びこれらの組み合わせからなる群から選択され、前記ドープ配合物の前記ポリマー材料の濃度が10〜25重量パーセントの範囲内であり、前記第1のコーティング補助剤がポリ(エチレングリコール)、ポリエーテル及びこれらの組み合わせからなる群から選択され、前記第1のコーティング補助剤の濃度が20〜95重量パーセントの範囲内である、請求項1に記載の方法。
- 対向する第1表面及び第2表面を有し、2つの多孔性のミクロ構造を有することで特徴化されるポリマー膜であって、第1のミクロ構造が、前記第1表面に最も近く、厚さ方向に伸びる平行に伸びた円筒形の孔を含み、第2のミクロ構造が、前記第2表面に最も近く、楕円形の孔を含み、前記第1のミクロ構造及び第2のミクロ構造の一部が、それぞれ第1表面及び第2表面において開放されている、ポリマー膜シート。
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US11/692,257 US7842214B2 (en) | 2007-03-28 | 2007-03-28 | Process for forming microporous membranes |
US11/692,257 | 2007-03-28 | ||
PCT/US2008/054638 WO2008118580A1 (en) | 2007-03-28 | 2008-02-22 | Process for forming microporous membranes |
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2008
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- 2008-02-22 WO PCT/US2008/054638 patent/WO2008118580A1/en active Application Filing
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WO2008118580A1 (en) | 2008-10-02 |
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