JP2022545582A - 結晶性スルホン化ポリイミドブロック共重合体プロトン交換膜とその製造方法及び使用 - Google Patents
結晶性スルホン化ポリイミドブロック共重合体プロトン交換膜とその製造方法及び使用 Download PDFInfo
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- JP2022545582A JP2022545582A JP2022538345A JP2022538345A JP2022545582A JP 2022545582 A JP2022545582 A JP 2022545582A JP 2022538345 A JP2022538345 A JP 2022538345A JP 2022538345 A JP2022538345 A JP 2022538345A JP 2022545582 A JP2022545582 A JP 2022545582A
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- proton exchange
- block copolymer
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- sulfonated polyimide
- exchange membrane
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- 239000012528 membrane Substances 0.000 title claims abstract description 92
- 239000004642 Polyimide Substances 0.000 title claims abstract description 68
- 229920001721 polyimide Polymers 0.000 title claims abstract description 68
- 229920001400 block copolymer Polymers 0.000 title claims abstract description 50
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 239000000446 fuel Substances 0.000 claims abstract description 18
- 125000003118 aryl group Chemical group 0.000 claims abstract description 5
- 125000001624 naphthyl group Chemical group 0.000 claims abstract description 5
- 239000000126 substance Substances 0.000 claims abstract description 5
- 125000000020 sulfo group Chemical group O=S(=O)([*])O[H] 0.000 claims abstract description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 90
- RLSSMJSEOOYNOY-UHFFFAOYSA-N m-cresol Chemical compound CC1=CC=CC(O)=C1 RLSSMJSEOOYNOY-UHFFFAOYSA-N 0.000 claims description 60
- 238000006243 chemical reaction Methods 0.000 claims description 57
- AWJUIBRHMBBTKR-UHFFFAOYSA-N isoquinoline Chemical compound C1=NC=CC2=CC=CC=C21 AWJUIBRHMBBTKR-UHFFFAOYSA-N 0.000 claims description 26
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 24
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 claims description 24
- 239000000178 monomer Substances 0.000 claims description 23
- YTVNOVQHSGMMOV-UHFFFAOYSA-N naphthalenetetracarboxylic dianhydride Chemical compound C1=CC(C(=O)OC2=O)=C3C2=CC=C2C(=O)OC(=O)C1=C32 YTVNOVQHSGMMOV-UHFFFAOYSA-N 0.000 claims description 20
- 239000002244 precipitate Substances 0.000 claims description 19
- 239000002904 solvent Substances 0.000 claims description 18
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 16
- 239000011521 glass Substances 0.000 claims description 16
- 230000002209 hydrophobic effect Effects 0.000 claims description 13
- 239000005711 Benzoic acid Substances 0.000 claims description 12
- 235000010233 benzoic acid Nutrition 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 11
- 150000004985 diamines Chemical class 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 8
- GTDPSWPPOUPBNX-UHFFFAOYSA-N ac1mqpva Chemical compound CC12C(=O)OC(=O)C1(C)C1(C)C2(C)C(=O)OC1=O GTDPSWPPOUPBNX-UHFFFAOYSA-N 0.000 claims description 8
- -1 aliphatic diamine Chemical class 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 6
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000003054 catalyst Substances 0.000 claims description 6
- 239000003960 organic solvent Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 150000007530 organic bases Chemical class 0.000 claims description 5
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 4
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical compound N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- QWVGKYWNOKOFNN-UHFFFAOYSA-N o-cresol Chemical compound CC1=CC=CC=C1O QWVGKYWNOKOFNN-UHFFFAOYSA-N 0.000 claims description 4
- IWDCLRJOBJJRNH-UHFFFAOYSA-N p-cresol Chemical compound CC1=CC=C(O)C=C1 IWDCLRJOBJJRNH-UHFFFAOYSA-N 0.000 claims description 4
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims description 4
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical compound CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 claims description 4
- IKCLCGXPQILATA-UHFFFAOYSA-N 2-chlorobenzoic acid Chemical compound OC(=O)C1=CC=CC=C1Cl IKCLCGXPQILATA-UHFFFAOYSA-N 0.000 claims description 2
- ISPYQTSUDJAMAB-UHFFFAOYSA-N 2-chlorophenol Chemical compound OC1=CC=CC=C1Cl ISPYQTSUDJAMAB-UHFFFAOYSA-N 0.000 claims description 2
- HORNXRXVQWOLPJ-UHFFFAOYSA-N 3-chlorophenol Chemical compound OC1=CC=CC(Cl)=C1 HORNXRXVQWOLPJ-UHFFFAOYSA-N 0.000 claims description 2
- VHYFNPMBLIVWCW-UHFFFAOYSA-N 4-Dimethylaminopyridine Chemical compound CN(C)C1=CC=NC=C1 VHYFNPMBLIVWCW-UHFFFAOYSA-N 0.000 claims description 2
- WXNZTHHGJRFXKQ-UHFFFAOYSA-N 4-chlorophenol Chemical compound OC1=CC=C(Cl)C=C1 WXNZTHHGJRFXKQ-UHFFFAOYSA-N 0.000 claims description 2
- FJKROLUGYXJWQN-UHFFFAOYSA-N 4-hydroxybenzoic acid Chemical compound OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims description 2
- 238000012661 block copolymerization Methods 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 125000004433 nitrogen atom Chemical group N* 0.000 claims description 2
- 239000013557 residual solvent Substances 0.000 claims description 2
- 238000004581 coalescence Methods 0.000 claims 1
- 238000010248 power generation Methods 0.000 abstract description 21
- 238000002360 preparation method Methods 0.000 abstract description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 24
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 21
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 12
- 229910052757 nitrogen Inorganic materials 0.000 description 12
- 229920000557 Nafion® Polymers 0.000 description 11
- 229920000642 polymer Polymers 0.000 description 10
- 239000007787 solid Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 238000012360 testing method Methods 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- 239000008367 deionised water Substances 0.000 description 7
- 229910021641 deionized water Inorganic materials 0.000 description 7
- 238000003756 stirring Methods 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 6
- 238000010907 mechanical stirring Methods 0.000 description 6
- 229920005604 random copolymer Polymers 0.000 description 6
- 239000003480 eluent Substances 0.000 description 5
- 239000011541 reaction mixture Substances 0.000 description 5
- 239000012265 solid product Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000008961 swelling Effects 0.000 description 4
- DXBNPCQFURHJGT-UHFFFAOYSA-N 2-(4-aminophenoxy)-5-[4-(4-aminophenoxy)-3-sulfophenyl]benzenesulfonic acid Chemical group C1=CC(N)=CC=C1OC1=CC=C(C=2C=C(C(OC=3C=CC(N)=CC=3)=CC=2)S(O)(=O)=O)C=C1S(O)(=O)=O DXBNPCQFURHJGT-UHFFFAOYSA-N 0.000 description 3
- 238000002441 X-ray diffraction Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- QFTYSVGGYOXFRQ-UHFFFAOYSA-N dodecane-1,12-diamine Chemical group NCCCCCCCCCCCCN QFTYSVGGYOXFRQ-UHFFFAOYSA-N 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000005342 ion exchange Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 3
- 230000010287 polarization Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000001291 vacuum drying Methods 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical class [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000003917 TEM image Methods 0.000 description 2
- 238000000862 absorption spectrum Methods 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000009477 glass transition Effects 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 230000003301 hydrolyzing effect Effects 0.000 description 2
- 125000000879 imine group Chemical group 0.000 description 2
- 239000003014 ion exchange membrane Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 125000000542 sulfonic acid group Chemical group 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 238000004566 IR spectroscopy Methods 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- SWBVRSUCEZCWOL-UHFFFAOYSA-N S(=O)(=O)(O)C1=CC=C(OC2=C(C=CC(=C2)N)C2=C(C=C(N)C=C2)OC2=CC=C(C=C2)S(=O)(=O)O)C=C1 Chemical compound S(=O)(=O)(O)C1=CC=C(OC2=C(C=CC(=C2)N)C2=C(C=C(N)C=C2)OC2=CC=C(C=C2)S(=O)(=O)O)C=C1 SWBVRSUCEZCWOL-UHFFFAOYSA-N 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000010411 electrocatalyst Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- UQSQSQZYBQSBJZ-UHFFFAOYSA-N fluorosulfonic acid Chemical compound OS(F)(=O)=O UQSQSQZYBQSBJZ-UHFFFAOYSA-N 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000000967 suction filtration Methods 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 229910021642 ultra pure water Inorganic materials 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
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- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08G73/1057—Polyimides containing other atoms than carbon, hydrogen, nitrogen or oxygen in the main chain
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- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08G73/1003—Preparatory processes
- C08G73/1007—Preparatory processes from tetracarboxylic acids or derivatives and diamines
- C08G73/101—Preparatory processes from tetracarboxylic acids or derivatives and diamines containing chain terminating or branching agents
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Abstract
Description
Ar2基は少なくとも1つのスルホ基を含む芳香族基であり、
x=5-100、
m=1-200、及び
n=5-500)
で表される。
工程2:第2の容器にAr2型スルホン化ジアミンモノマー、1,4,5,8-ナフタレンテトラカルボン酸二無水物(NTDA)、フェノール系溶媒、及び有機塩基を追加し、50~120℃まで加熱して1~10時間反応させた後、150~200℃まで温度を上昇させ、2~30時間反応させ、スルホン化ポリイミド親水性ブロックプレポリマー溶液を調製し、反応式は
工程3:上記第2の容器に工程1で得られたポリイミド疎水性ブロックプレポリマー及びフェノール系溶媒を加え、150~200℃まで温度を上昇させて2~72時間反応させ、結晶性スルホン化ポリイミドブロック共重合体を調製し、反応式は、
工程4:工程3で調製した結晶性スルホン化ポリイミドブロック共重合体を膜にした後、プロトン交換を行い、結晶性スルホン化ポリイミドブロック共重合体プロトン交換膜を得る。
(1)本発明は、複雑なジアミン及び/又は二無水物モノマーの構造により設計及び合成する必要はなく、通常の直鎖脂肪族ジアミン及び通常のスルホン化ジアミンモノマーを使用するだけで、ブロック共重合技術によって結晶性スルホン化ポリイミドブロック共重合体を合成でき、製造工程が簡単で、反応条件が穏やかで、工業化生産を容易しやすい。
(2)本発明のスルホン化ポリイミドブロック共重合体は、完璧なミクロ相分離構造を有するだけでなく、その疎水性相も顕著な結晶性を有し、この結晶性は、親水性相の緊密で整然とした凝集を誘発し、それによって、連続性の良いプロトン伝導チャネルを形成し、プロトンの伝導を促進し、平面方向でのプロトン交換膜の膨潤率を低下させ、膜の水素及び酸素透過係数を低下させ、そのため、膜は良好な熱安定性、非常に高い機械的強度、非常に低い膨潤率(膜の平面方向)、及び非常に高いプロトン導電率を備えている。
(3)本発明により製造されたスルホン化ポリイミドブロック共重合体プロトン交換膜で組み立てられた単電池は、非常に低い相対湿度下でも優れた発電性能を有し、その発電性能は外部加湿条件にほとんど依存せず、従来のプロトン交換膜燃料電池は、一般に、高温(110℃など)及び低湿度(25%湿度など)の条件下で発電性能が低く、さらには発電できないという問題を克服する。
用語「Ar1型二無水物モノマー」は、1,4,5,8-ナフタレンテトラカルボン酸二無水物(NTDA)などのAr1基を含む二無水物モノマーをいう。
用語「Ar2型スルホン化ジアミンモノマー」は、4,4’-ビス(4-アミノフェノキシ)ビフェニル3,3’-ジスルホン酸(BAPBDS)などのAr2基を含むジアミンモノマーをいう。
用語「脂肪族ジアミンモノマー」は、1,12-ジアミノドデカン(DDA)などの2つのアミノ基を有する脂肪族炭化水素をいう。
窒素の保護下で、1mmolの濃度のDDA 0.2004g、1.5mmolの濃度のBAPBDS 0.793g、及びm-クレゾール17mL、トリエチルアミン0.7mlを十分に乾燥した100mLの3つ口フラスコに順次加え、ジアミンモノマーが完全に溶解するまで室温で撹拌した。次に、1mLのイソキノリン、2.5mmolの濃度のNTDA 0.635g、及び5.2mmolの濃度の安息香酸 0.635gを加え、室温で0.5時間撹拌し、次に、ゆっくりと温度を80℃に上げ、この温度で4時間反応させ、次に反応温度を180℃に上げ、この温度で20時間反応を続けた。加熱を停止し、反応系が80℃に冷却されたら、200mLのメタノールに注ぎ、糸状の沈殿物を得た。吸引濾過し、糸状生成物をメタノールで十分に洗浄した後、100℃で10時間真空乾燥させた。
乾燥したサンプル膜0.2~0.3gを正確に量り、細かく切った後、50mLの飽和塩化ナトリウム溶液に入れ、室温で3日間撹拌した。膜を取り出し、かつ少量の脱イオン水で3回洗浄し、すべての洗浄液を集め、前述の飽和塩化ナトリウム溶液と合わせ、該混合液を既知の濃度の水酸化ナトリウム溶液で滴定した。次の式に従ってイオン交換容量(IEC)を計算し、IEC=CNaOH・VNaOH/m、ここで、CNaOHはNaOH溶液の濃度、VNaOHは滴定で消費されるNaOHの体積、mは秤取したポリマー膜の質量である。実施例1~5で得られた結晶性スルホン化ポリイミドブロック共重合体プロトン交換膜と比較例1で製造されたアモルファススルホン化ポリイミドランダム共重合体プロトン交換膜及び米国のDuPontCompanyのNafion212プロトン交換膜のプロトン導電率をHioki3553HitesterACインピーダンスメーターでACインピーダンス法により測定し、テスト周波数範囲:42Hz-5MHz。テスト媒体:超純水。テスト温度:40又は80℃。プロトン導電率σ(単位:S/cm)は、次の式に従って計算され、σ=D/(LBR)、式では、Dは2つの電極間の距離(5mm)、Lは膜サンプルの幅(5mm)、Bは膜サンプルの厚さ(30~50μm)、Rは測定されたサンプルのインピーダンスである。
電極触媒として40%Pt/C(Johnson Matthey会社)を使用し、バインダーとしてNafionを使用して触媒インクを調製し、次に、プロトン交換膜の両面にスプレーし、各面の有効面積はすべて5cm2で、アノードとカソードの白金触媒の負荷は両方とも0.5mg/cm2である。燃料電池テスト装置(米国Scribner、850e)を使用して、実施例1~5、比較例1、及びNafion212によってそれぞれ組み立てられた燃料電池単電池の発電性能をテストした。すべての単電池の発電性能のテスト条件は次のとおりである。アノードガス(水素)及びカソードガス(酸素)の流量はすべて200mL/min、温度:95℃、背圧:150KPa、アノード及びカソードガスの加湿条件は同じで、かつ相対湿度はそれぞれ50%に制御された。
Claims (16)
- Ar2基は、それに接続されている窒素原子の電子雲密度を増加させることができる、請求項1又は2に記載のプロトン交換膜。
- 請求項1~5のいずれか一項に記載の結晶性スルホン化ポリイミドブロック共重合体プロトン交換膜の製造方法であって、以下の:
Ar1型二無水物モノマー、脂肪族ジアミンモノマー、及びフェノール系溶媒を第1の容器に加え、50~120℃まで加熱して1~10時間反応させた後、次に150~200℃に温度を上昇させて2~30時間反応させて、ポリイミド疎水性ブロックプレポリマーを調製する工程1、
第2の容器にAr2型スルホン化ジアミンモノマー、1,4,5,8-ナフタレンテトラカルボン酸二無水物(NTDA)、フェノール系溶媒、及び有機塩基を追加し、50~120℃まで加熱して1~10時間反応させた後、150~200℃まで温度を上昇させ、2~30時間反応させ、スルホン化ポリイミド親水性ブロックプレポリマー溶液を調製する工程2、
工程1で調製した前記ポリイミド疎水性ブロックプレポリマー及びフェノール系溶媒を前記第2の容器に加え、150~200℃まで温度を上昇させて2~72時間反応させ、結晶性スルホン化ポリイミドブロック共重合体を調製する工程3、
工程3で調製した前記結晶性スルホン化ポリイミドブロック共重合体を膜にした後、プロトン交換を行い、結晶性スルホン化ポリイミドブロック共重合体プロトン交換膜を得る工程4、を含む、
製造方法。 - 工程1は、前記工程1の反応系を室温まで冷却した後、有機溶媒を加えて第1の沈殿物を析出させ、前記第1の沈殿物を吸引濾過して真空乾燥させた後、乾燥されたポリイミド疎水性ブロックプレポリマーを得る工程も含む、請求項6に記載の製造方法。
- 工程3は、前記工程3の反応系を20~120℃まで冷却した後、有機溶媒を加えて第2の沈殿物を析出させ、前記第2の沈殿物を吸引濾過して真空乾燥させた後、乾燥された結晶性スルホン化ポリイミドブロック共重合体を得る工程も含む、請求項6に記載の製造方法。
- 工程4の結晶性スルホン化ポリイミドブロック共重合体を膜にするプロセスは、前記結晶性スルホン化ポリイミドブロック共重合体をフェノール系溶媒に溶解し、ガラス板上に流し込み、90~110℃で5~15時間乾燥させてガラス板から膜を剥離するプロセスである、請求項6に記載の製造方法。
- 工程4のプロトン交換プロセスは、膜をアルコール溶液に浸して残留溶媒を除去し、次にプロトン酸溶液に浸してプロトン交換を行うプロセスである、請求項6に記載の製造方法。
- 前記有機溶媒は、メタノール、エタノール、イソプロパノール、アセトン、酢酸エチルのうちの1又はそれ以上である、請求項7又は8に記載の製造方法。
- フェノール系溶媒は、m-クレゾール、o-クレゾール、p-クレゾール、o-クロロフェノール、m-クロロフェノール及びp-クロロフェノールのうちの1又はそれ以上である、請求項6に記載の製造方法。
- 工程2の有機塩基は、トリエチルアミン、トリメチルアミン、ピリジン及び4-(N、N-ジメチルアミノ)ピリジンのうちの1又はそれ以上である、請求項6に記載の製造方法。
- 工程1及び工程4では、触媒を加えることもでき、前記触媒は、酢酸、安息香酸、クロロ安息香酸、ヒドロキシ安息香酸、キノリン、イソキノリン及びピリジンのうちの1又はそれ以上である、請求項6に記載の製造方法。
- 請求項1から5のいずれか一項に記載の結晶性スルホン化ポリイミドブロック共重合体プロトン交換膜の電池における使用。
- 前記電池は燃料電池であることを特徴とする請求項15に記載の使用。
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