KR102444296B1 - 생분해성 나노섬유의 형성 방법 및 이를 적용한 필터 부재의 제조 방법 - Google Patents
생분해성 나노섬유의 형성 방법 및 이를 적용한 필터 부재의 제조 방법 Download PDFInfo
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- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0015—Electro-spinning characterised by the initial state of the material
- D01D5/003—Electro-spinning characterised by the initial state of the material the material being a polymer solution or dispersion
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
- A62B18/02—Masks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
- B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
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- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
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- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Abstract
Description
도 2는 본 발명의 일 실시예에 따른 것으로, 생분해성 나노섬유의 형성 방법에 적용될 수 있는 중합 반응을 예시적으로 보여주는 반응식이다.
도 3은 본 발명의 다른 실시예에 따른 것으로, 생분해성 나노섬유의 형성 방법에 적용될 수 있는 중합 반응을 예시적으로 보여주는 반응식이다.
도 4는 본 발명의 일 실시예에 따른 생분해성 나노섬유의 형성 방법에 적용될 수 있는 전자방사(electrospinning) 장치 및 방법을 설명하기 위한 도면이다.
도 5는 다양한 조건으로 제조된 PLA-PEG 공중합체에서 PLA와 PEG의 중량비(PLA/PEG) 조건에 따른 유리전이온도(Tg) 및 용융온도(Tm)의 변화를 보여주는 그래프이다.
도 6 내지 도 10은 각각 실험예 1 내지 5의 방법으로 형성된 생분해성 PLA-PEG 공중합체로부터 전자방사(electrospinning) 공정으로 제조된 나노섬유의 SEM(scanning electron microscope) 사진 이미지(A 도면) 및 입경 분포(입도 분포) 특성(B 도면)을 보여주는 도면이다.
S10∼S50 : 단계들 10 : 시린지 부재
20 : 폴리머 용액 30 : 노즐
40 : 테일러 콘 50 : 콜렉터
60 : 파워 서플라이 70 : 폴리머 섬유
80 : 나노섬유
Claims (17)
- PLA(poly lactic acid) 형성용 제 1 소스 물질, PEG(poly ethylene glycol) 형성용 제 2 소스 물질 및 제 1 용매를 포함하는 원료 조성물을 마련하는 단계;
상기 원료 조성물에 개시제 및 촉매를 첨가하는 단계;
상기 개시제 및 촉매가 첨가된 원료 조성물로부터 생분해성 PLA-PEG 공중합체를 수득하는 단계;
상기 생분해성 PLA-PEG 공중합체를 제 2 용매에 용해하여 생분해성 PLA-PEG 공중합체 용액을 형성하는 단계; 및
상기 생분해성 PLA-PEG 공중합체 용액으로부터 전자방사(electrospinning) 공정을 이용해서 생분해성 나노섬유를 형성하는 단계를 포함하고,
상기 제 2 용매는 1차 용매 및 2차 용매를 포함하고,
상기 생분해성 PLA-PEG 공중합체를 상기 제 2 용매에 용해하여 상기 생분해성 PLA-PEG 공중합체 용액을 형성하는 단계는, 상기 생분해성 PLA-PEG 공중합체를 상기 1차 용매에 용해하는 단계; 및 상기 1차 용매와 상기 생분해성 PLA-PEG 공중합체의 혼합액을 상기 2차 용매와 혼합하는 단계를 포함하고,
상기 1차 용매는 메탄올(methanol) 및 아세토니트릴(acetonitrile)을 포함하고, 상기 1차 용매에서 상기 메탄올의 함량은 상기 아세토니트릴의 함량 보다 높고,
상기 1차 용매에서 상기 메탄올과 상기 아세토니트릴의 부피비(메탄올:아세토니트릴)는 1.5:1 내지 3:1 범위이고,
상기 2차 용매는 탈이온수(deionized water)를 포함하는,
생분해성 나노섬유의 형성 방법. - 제 1 항에 있어서,
상기 제 1 소스 물질은 D-LA (D-lactide), L-LA (L-lactide), meso-LA (meso-lactide), PDLA [poly(D-lactic acid)], PLLA [poly(L-lactic acid)] 및 PLA 중 어느 하나를 포함하고,
상기 제 1 소스 물질의 중량평균 분자량(weight average molecular weight)(Mw)은 8000 내지 12000 Da 인 생분해성 나노섬유의 형성 방법. - 제 1 항에 있어서,
상기 제 2 소스 물질은 MPEG [poly(ethylene glycol) monomethyl ether] 및 PEG 중 어느 하나를 포함하고,
상기 제 2 소스 물질의 수평균 분자량(number average molecular weight)(Mn)은 500 내지 1000 Da 인 생분해성 나노섬유의 형성 방법. - 제 1 항에 있어서,
상기 개시제는 acetyl peroxide, cumyl hydroperoxide 및 potassium persulfate 중 적어도 어느 하나를 포함하는 생분해성 나노섬유의 형성 방법. - 제 1 항에 있어서,
상기 촉매는 stannous octoate [Sn(Oct)2]를 포함하는 생분해성 나노섬유의 형성 방법. - 제 1 항에 있어서,
상기 원료 조성물에 대한 상기 촉매의 첨가량은 0.4∼0.6 wt% 범위인 생분해성 나노섬유의 형성 방법. - 제 1 항에 있어서,
상기 생분해성 PLA-PEG 공중합체에서 PLA와 PEG의 중량비(PLA:PEG)는 4:1 내지 7:1 범위인 생분해성 나노섬유의 형성 방법. - 제 1 항에 있어서,
상기 생분해성 PLA-PEG 공중합체는 원-포트 개환 중합(one-pot ring-opening polymerization) 공정에 의해 합성되는 생분해성 나노섬유의 형성 방법. - 삭제
- 삭제
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- 제 1 항에 있어서,
상기 생분해성 나노섬유의 평균 직경은 10∼400 nm 범위인 생분해성 나노섬유의 형성 방법. - 제 14 항에 있어서,
상기 생분해성 나노섬유의 평균 직경은 100∼300 nm 범위인 생분해성 나노섬유의 형성 방법. - 필터 부재의 제조 방법에 있어서,
청구항 1 내지 8, 14 및 15 중 어느 한 항에 기재된 방법을 이용해서 생분해성 나노섬유를 형성하는 단계; 및
상기 생분해성 나노섬유를 적용한 필터 부재를 제조하는 단계를 포함하는 필터 부재의 제조 방법. - 제 16 항에 있어서,
상기 필터 부재는 미세입자 차단용 마스크 부재 또는 비말 차단용 마스크 부재를 포함하는 필터 부재의 제조 방법.
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KR101193972B1 (ko) | 2011-05-19 | 2012-10-24 | 한양대학교 산학협력단 | 제올라이트를 이용한 초극세 나노파이버의 제조 방법 |
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