KR960034993A - Measuring Pore Size Distribution of Porous Membrane Using Light Transmittance - Google Patents

Measuring Pore Size Distribution of Porous Membrane Using Light Transmittance Download PDF

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Publication number
KR960034993A
KR960034993A KR1019950005114A KR19950005114A KR960034993A KR 960034993 A KR960034993 A KR 960034993A KR 1019950005114 A KR1019950005114 A KR 1019950005114A KR 19950005114 A KR19950005114 A KR 19950005114A KR 960034993 A KR960034993 A KR 960034993A
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South Korea
Prior art keywords
light
pore size
size distribution
membrane
measuring
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KR1019950005114A
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Korean (ko)
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KR0148871B1 (en
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윤인주
정진기
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강필종
한국자원연구소
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Priority to KR1019950005114A priority Critical patent/KR0148871B1/en
Publication of KR960034993A publication Critical patent/KR960034993A/en
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Publication of KR0148871B1 publication Critical patent/KR0148871B1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
    • G01N15/082—Investigating permeability by forcing a fluid through a sample
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/59—Transmissivity

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

본 발명은 다공성을 통과하는 빛의 투과도 차이를 이용하여 분리막의 기공크기분포를 측정하는 방법에 관한 것을로써, 대부분의 다공성 분리막은 많은 기공들을 포함하고 있지만 외형상으로는 표면이 매끄러운 백색 종이와 흡사하며 건조한 상태에서는 빛 투과도가 매우 낮다. 그러나 기공이 어떠한 투명액체로 채워지면 유리처럼 변하여 빛 투과도가 크게 높아진다. 측정막의 모든 기공을 액체로 채우고 여기에 기체로 압력을 가하면 모세관력의 원리에 의하여 기공을 크기에 따라 투과시킬 수 있다. 이때 막 양측에 광원과 광도계를 설치하여 막을 통한 빛의 투과도를 측정하며 투과도의 차이로서 각 크기의 기공들이 갖는 분포를 측정한다.The present invention relates to a method for measuring the pore size distribution of a separator using a difference in the light transmittance through the porosity. Most porous separators contain many pores, but in appearance they are similar to a white paper with a smooth surface and dried. In the state, the light transmittance is very low. However, when the pores are filled with some transparent liquid, they turn like glass, which greatly increases the light transmission. Filling all the pores of the measuring membrane with liquid and applying pressure to the gas can permeate the pores according to the size of the capillary force. At this time, a light source and a photometer are installed on both sides of the membrane to measure the transmittance of light through the membrane, and the distribution of pores of each size is measured as a difference in the transmittance.

Description

광투과도를 이용한 다공성 분리막의 기공크기분포 측정법Measuring Pore Size Distribution of Porous Membrane Using Light Transmittance

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

Claims (8)

다공성 분리막의 기공크기분포를 측정하는 방법에 있어서, 기공을 먼저 액체로 함침시키고 기체로 압력을 가하여 투과시키며 기공이 액체로 채워진 상태와 기체로 채워진 상태의 빛투과도 차이를 이용하여 측정하는 것을 특징으로 하는 광투과도를 이용한 다공성 분리막의 기공크기분포 측정법.A method for measuring the pore size distribution of a porous membrane, characterized in that the pores are first impregnated with a liquid and transmitted by applying pressure with a gas, and measured by using a light transmittance difference between a state filled with a liquid and a state filled with a gas. Method of measuring the pore size distribution of the porous membrane by using a light transmittance. 제1항에 있어서, 다공성 분리막은 일반여과지, 정밀여과막, 한외여과막을 통칭하며 형태에 있어서는 평막형, 관형, 실관형들을 대상으로 하는 것을 특징으로 하는 광투과도를 이용한 다공성 분리막의 기공크기분포측정법.The method of claim 1, wherein the porous separator is a general filter paper, a microfiltration membrane, an ultrafiltration membrane, and in the form of a flat membrane, tubular, and tubular shapes. 제1항에 있어서, 액체로서는 측정막이 건조한 상태에서 빛을 통과시키지 않을 경우에는 실리콘오일을 사용하며, 측정막이 투명하면 실리콘오일에 흑색 염료를 첨가하여 사용하는 것을 특징으로 하는 광투과도를 이용한 다공성 분리막의 기공크기분포 측정법.The porous membrane according to claim 1, wherein as a liquid, silicon oil is used when light does not pass through in a dry state, and when the measurement film is transparent, black dye is added to the silicon oil. Measurement of pore size distribution of. 제1항에 있어서, 기체로서는 미립자와 수분이 완전히 제거된 순수한 공기 또는 질소, 아르곤 등의 불활성 기체를 사용하는 것을 특징으로 하는 광투과도를 이용한 다공성 분리막의 기공크기분포 측정법.The method of measuring pore size distribution of a porous separator using light transmittance according to claim 1, wherein as gas, fine air and inert gas such as nitrogen or argon are completely removed. 제1항에 있어서, 빛 투과도는 측정막의 한편에 광원을 두고 반대편에 광도계를 설치하여 측정하는 것을 특징으로 하는 광투과도를 이용한 다공성 분리막의 기공크기분포 측정법.The method of claim 1, wherein the light transmittance is measured by placing a light source on one side of the measurement membrane and installing a photometer on the opposite side. 제5항에 있어서, 광원으로는 일반 빛을 발생하는 모든 제품을 사용할 수 있는 것이며, 광도계로서도 기본적으로 광도를 측정할 수 있는 모든 기기들을 사용 가능하며, 상기 광도계는 광원의 세기 변화에 민감해야 하므로 광원의 종류에 따라 적합한 것으로 선정하는 것을 특징으로 하는 광투과도를 이용한 다공성 분리막의 기공크기분포 측정법.According to claim 5, as a light source can be used for all products that generate a general light, and can also be used as a photometer, all devices capable of measuring the light basically, since the photometer should be sensitive to changes in the intensity of the light source Method for measuring the pore size distribution of a porous membrane using a light transmittance, characterized in that selected according to the type of light source. 제5항에 있어서, 광원의 측정막에 대한 집중도를 높이기 위하여, 광원의 전면에 볼록렌즈를 설치하거나 후면에 오목거울을 설치하는 것을 특징으로 하는 광투과도를 이용한 다공성 분리막의 기공크기분포 측정법.The method of claim 5, wherein a convex lens is provided on the front surface of the light source or a concave mirror is installed on the rear surface of the light source to increase the concentration of the light source on the measurement film. 제5항에 있어서, 측정기 구조상 빛의 방향전환이 필요시에는 반사경을 이용하는 것을 특징으로 하는 광투과도를 이용한 다공성 분리막의 기공크기분포 측정법.The method of claim 5, wherein the pore size distribution of the porous separator using a light transmittance is characterized in that a reflector is used when the direction of light is required due to the structure of the measuring device. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950005114A 1995-03-13 1995-03-13 Method for pore size and distribution of porous membrane using photo transmissibility KR0148871B1 (en)

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KR960034993A true KR960034993A (en) 1996-10-24
KR0148871B1 KR0148871B1 (en) 1998-12-01

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114904397A (en) * 2021-02-09 2022-08-16 上海工程技术大学 Method for measuring aperture and aperture distribution of filter membrane

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100372908B1 (en) * 2000-11-22 2003-02-15 광주과학기술원 Method and apparatus of measuring a membrane pore size distribution using fractional rejection of solutes with certain molecular masses
KR102648343B1 (en) 2021-04-06 2024-03-14 주식회사 엘지에너지솔루션 Method for prior detecting detective products of porous polymer substrate for separator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114904397A (en) * 2021-02-09 2022-08-16 上海工程技术大学 Method for measuring aperture and aperture distribution of filter membrane
CN114904397B (en) * 2021-02-09 2023-09-19 上海工程技术大学 Method for measuring pore diameter and pore diameter distribution of filter membrane

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