KR20150012955A - 탄소나노튜브 분리막 및 그 제조방법 - Google Patents
탄소나노튜브 분리막 및 그 제조방법 Download PDFInfo
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- KR20150012955A KR20150012955A KR1020130089176A KR20130089176A KR20150012955A KR 20150012955 A KR20150012955 A KR 20150012955A KR 1020130089176 A KR1020130089176 A KR 1020130089176A KR 20130089176 A KR20130089176 A KR 20130089176A KR 20150012955 A KR20150012955 A KR 20150012955A
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- 239000002041 carbon nanotube Substances 0.000 title claims abstract description 172
- 229910021393 carbon nanotube Inorganic materials 0.000 title claims abstract description 169
- 239000012528 membrane Substances 0.000 title claims abstract description 71
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000000926 separation method Methods 0.000 claims abstract description 46
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- 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
- B01D69/1213—Laminated layers
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- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/025—Reverse osmosis; Hyperfiltration
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Abstract
Description
도 2는 제2 구체예에 따른 탄소나노튜브 분리막의 제조방법을 개략적으로 나타낸 공정도이다.
도 3은 제3 구체예에 따른 탄소나노튜브 분리막의 제조방법을 개략적으로 나타낸 공정도이다.
도 4는 제2 구체예의 제조방법으로 제조된 탄소나노튜브 분리막의 단면도를 도시한 것이다.
도 5는 탄소나노튜브의 배향각을 설명하기 위하여 나타낸 개념도를 도시한 것이다.
도 6은 제3 구체예에 따라 입체화된 탄소나노튜브 시트의 주사전자현미경(SEM) 사진이다.
실시예 1 | 실시예 2 | 비교예 1 | |
배제율 (%) | 99 | 99 | 97.5 |
수투과도(m/d·bar) | 0.052 | 0.06 | 0.013 |
Claims (17)
- 제1 면 및 상기 제1 면과 대향하는 제2 면이 구비된 활성층; 및
상기 활성층을 관통하여 기공을 형성하는 복수 개의 탄소나노튜브;를 포함하고,
상기 탄소나노튜브는 상기 활성층의 평탄한 일 면과 θ1의 배향각을 이루는 제1 탄소나노튜브; 및 θ2의 배향각을 이루는 제2 탄소나노튜브;가 교대로 배열되며,
상기 배향각 θ1 및 θ2는 각각 30° ≤ θ1 ≤ 90° 이고, 90° ≤ θ2 ≤ 150°인 것을 특징으로 하는 탄소나노튜브 분리막.
- 제1항에 있어서,
상기 θ1 및 θ2는 하기 식 1을 만족하는 것을 특징으로 하는 탄소나노튜브 분리막:
[식 1]
0° ≤ Abs|θ1-θ2| ≤ 120°
- 제1항에 있어서,
상기 제1 탄소나노튜브로 구성된 제1 탄소나노튜브 열;과
상기 제2 탄소나노튜브로 구성된 제2 탄소나노튜브 열;이 교대로 배열된 것을 특징으로 하는 탄소나노튜브 분리막.
- 제3항에 있어서
제1 탄소나노튜브 열과 제2 탄소나노튜브 열 사이에는 지지체가 구비된 것을 특징으로 하는 탄소나노튜브 분리막.
- 제4항에 있어서,
상기 지지체는 분리막 내부에 형성된 와이어 또는 막대 형상인 것을 특징으로 하는 탄소나노튜브 분리막.
- 제1항에 있어서,
상기 분리막의 두께는 0.1 내지 50㎛이며, 상기 탄소나노튜브의 내경은 0.5 내지 2㎚인 것을 특징으로 하는 탄소나노튜브 분리막.
- 제1항에 있어서,
상기 활성층은 폴리아미드계 수지 또는 친수화처리된 폴리올레핀계 수지를 포함하는 것을 특징으로 하는 탄소나노튜브 분리막.
- 제1항에 있어서,
상기 활성층의 단위 면적(cm2) 당 표면 기공율(surface porosity)은 1×1010 개/cm2이상인 것을 특징으로 하는 탄소나노튜브 분리막.
- 제1항 내지 제8항 중 어느 한 항의 탄소나노튜브 분리막을 포함하는 역삼투막.
- 제9항에 있어서,
상기 역삼투막은 25℃, pH 8 조건에서 배제율이 99% 이상이고, 수투과율이 0.05 m/d·bar 이상인 것을 특징으로 하는 역삼투막.
- 탄소나노튜브 시트를 제공하는 단계;
제공된 상기 탄소나노튜브 시트를 입체화하는 단계;
상기 입체화된 탄소나노튜브 시트를 고분자 수지에 함침시켜 CNT-고분자 복합체를 제조하는 단계; 및,
상기 CNT-고분자 복합체를 에칭하는 단계;를 포함하는 탄소나노튜브 분리막의 제조방법.
- 제11항에 있어서,
상기 탄소나노튜브 시트는 지지체를 이용하여 입체화된 것을 특징으로 하는 탄소나노튜브 분리막의 제조방법.
- 제11항에 있어서,
상기 입체화된 탄소나노튜브 시트는 웨이브 패턴을 갖는 것을 특징으로 하는 탄소나노튜브 분리막의 제조방법.
- 제13항에 있어서,
상기 웨이브 패턴은 주기를 가지는 것을 특징으로 하는 탄소나노튜브 분리막의 제조방법.
- 제11항에 있어서,
상기 CNT-고분자 복합체를 에칭하는 단계는 상기 CNT-고분자 복합체 표면에 기공이 형성되도록 상기 CNT-고분자 복합체의 외부표면을 절삭하는 것을 특징으로 하는 탄소나노튜브 분리막의 제조방법.
- 제11항에 있어서,
상기 탄소나노튜브 시트를 형성하는 탄소나노튜브는 규칙적으로 배열된 것을 특징으로 하는 탄소나노튜브 분리막의 제조방법.
- 제11항에 있어서,
상기 고분자 수지는 폴리아미드계 수지 또는 친수화 처리된 폴리올레핀계 수지를 포함하는 것을 특징으로 하는 탄소나노튜브 분리막의 제조방법.
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CN112295405A (zh) * | 2019-07-30 | 2021-02-02 | 上海恩捷新材料科技有限公司 | 高通量高抗污染性的聚乙烯超滤膜及其制备方法 |
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CN112295405A (zh) * | 2019-07-30 | 2021-02-02 | 上海恩捷新材料科技有限公司 | 高通量高抗污染性的聚乙烯超滤膜及其制备方法 |
CN112295405B (zh) * | 2019-07-30 | 2022-06-10 | 上海恩捷新材料科技有限公司 | 高通量高抗污染性的聚乙烯超滤膜及其制备方法 |
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