JP2021515211A - 超吸収体の透過率を測定する方法 - Google Patents
超吸収体の透過率を測定する方法 Download PDFInfo
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- 238000002834 transmittance Methods 0.000 title claims abstract description 13
- 230000008961 swelling Effects 0.000 claims abstract description 48
- 238000000034 method Methods 0.000 claims abstract description 36
- 239000006185 dispersion Substances 0.000 claims abstract description 32
- 239000007864 aqueous solution Substances 0.000 claims abstract description 25
- 239000000243 solution Substances 0.000 claims abstract description 22
- 230000036962 time dependent Effects 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims abstract description 4
- 238000005259 measurement Methods 0.000 claims description 50
- 230000031700 light absorption Effects 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 6
- 238000010924 continuous production Methods 0.000 claims description 4
- 239000003086 colorant Substances 0.000 claims description 3
- 238000004132 cross linking Methods 0.000 claims description 3
- 239000003431 cross linking reagent Substances 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 2
- 239000002504 physiological saline solution Substances 0.000 claims 1
- 238000006116 polymerization reaction Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 20
- 238000000149 argon plasma sintering Methods 0.000 description 9
- 230000035699 permeability Effects 0.000 description 9
- 238000010998 test method Methods 0.000 description 9
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 7
- 239000002250 absorbent Substances 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 7
- 230000014759 maintenance of location Effects 0.000 description 6
- 230000002745 absorbent Effects 0.000 description 5
- 229920002307 Dextran Polymers 0.000 description 4
- 239000011780 sodium chloride Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000011088 calibration curve Methods 0.000 description 3
- 238000004590 computer program Methods 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
- 238000000691 measurement method Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000008033 biological extinction Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
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- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000007655 standard test method Methods 0.000 description 2
- 229920000247 superabsorbent polymer Polymers 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000007863 gel particle Substances 0.000 description 1
- 238000003898 horticulture Methods 0.000 description 1
- 239000010954 inorganic particle Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
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- 238000003908 quality control method Methods 0.000 description 1
- -1 sodium chloride Chemical class 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/043—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a granular material
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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
- G01N15/0806—Details, e.g. sample holders, mounting samples for testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/30—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by using centrifugal effects
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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
- G01N2015/0846—Investigating permeability, pore-volume, or surface area of porous materials by use of radiation, e.g. transmitted or reflected light
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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
- G01N2015/0866—Sorption
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- 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
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N2021/3125—Measuring the absorption by excited molecules
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- Chemical Kinetics & Catalysis (AREA)
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- Investigating Or Analysing Materials By Optical Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Absorbent Articles And Supports Therefor (AREA)
Abstract
Description
式中、
I0:入り込む(入射)光の強度(単位:W m−2)
I1:透過光の強度(単位:W m−2)
c:液体中の吸収性物質のモル濃度
ελ:所定の波長λにおける10進数の消衰係数(これは、吸収性物質に固有の値である)
d:放射線が通過する吸収性の物体の層厚(単位:m)。
以下に記載の「WSP」と称される標準試験方法は、,,Worldwide Strategic Partners” EDANA (Avenue Eugene Plasky, 157, 1030 Bruessel,ベルギー, www.edana.org)およびINDA (1100 Crescent Green, Suite 115, Cary, North Carolina 27518,アメリカ合衆国, www.inda.org)から一緒に発刊された,,Standard Test Methods for the Nonwovens Industry”,2005版に記載されている。この発行物は、EDANAおよびINDAの双方から入手できる。
20g/gの液体吸取(T20)は、欧州特許出願公開第2535027号明細書においてp13〜18に記載の試験方法,,K(t) Test Method (Dynamic Effective Permeability and Uptake Kinetics Measurement Test Method)”に従って決定される。
遠心分離機保持容量(CRC)は、EDANAにより推奨される試験方法番号WSP241.2(05)”Fluid Retention Capacity in Saline, After Centrifugation”により決定される。
実施例のために、透過率の異なる4つの超吸収体を製造した。これらの超吸収体を、遠心分離機保持容量(CRC)および20g/gの液体吸取(T20)について測定した。これらの結果は、表1にまとめられている。
Claims (16)
- 超吸収体における特性値を測定する方法であって、過剰な水性の溶液または分散液を装入し、前記装入された水性の溶液または分散液中で撹拌しながら前記超吸収体を膨潤させ、前記水性の溶液または分散液中には、少なくとも1種の成分Aが溶解または分散しており、前記水性の溶液または分散液中の前記少なくとも1種の成分Aの濃縮度を、前記超吸収体の膨潤の間に測定する方法において、前記水性の溶液または分散液中の前記成分Aの濃縮度を通じて、時間依存性の膨潤挙動を測定し、そこから膨潤定数kまたは特性膨潤時間τを計算し、前記特性値は、前記超吸収体の透過率に依存し、前記特性値を、前記膨潤定数kと前記特性値との間または前記特性膨潤時間τと前記特性値との間の事前に測定された相関関係により求めることを特徴とする、方法。
- 前記成分Aが、可溶性塩であり、前記成分Aの前記濃縮度を、前記溶液の電気伝導率の上昇を通じて測定することを特徴とする、請求項1記載の方法。
- 前記成分Aが、可溶性着色剤であり、前記成分Aの前記濃縮度を、前記溶液の光吸収率の上昇を通じて測定することを特徴とする、請求項1記載の方法。
- 前記成分Aが、可溶性着色剤であり、前記成分Aの前記濃縮度を、前記溶液の光吸収率の上昇を通じて測定することを特徴とする、請求項1記載の方法。
- 使用される前記水性の溶液または分散液の量が、10〜200mlであることを特徴とする、請求項1から4までのいずれか1項記載の方法。
- 使用される前記超吸収体の量が、0.5〜5gであることを特徴とする、請求項1から5までのいずれか1項記載の方法。
- 使用される前記水性の溶液または分散液の量と、前記水性の溶液または分散液中の使用される前記超吸収体の総膨潤容量とからの比率が、2.5〜5の範囲にあることを特徴とする、請求項1から6までのいずれか1項記載の方法。
- 前記特性値が、超吸収体粒子の層が特定の値の分だけ膨潤するのにかかる時間であることを特徴とする、請求項1から7までのいずれか1項記載の方法。
- 前記超吸収体の前記層が、0.5〜5gの超吸収体から成り、5〜7cmの直径を有する円形の領域を覆っていることを特徴とする、請求項8記載の方法。
- 前記相関関係を、前記膨潤定数kまたは前記特性膨潤時間τの計算と、透過率の異なる少なくとも3つの超吸収体の特性値の測定とにより測定することを特徴とする、請求項1から9までのいずれか1項記載の方法。
- 透過率の異なる前記超吸収体を、重合時の架橋剤の量を変えることにより、かつ/または表面後架橋における表面後架橋剤の量を変えることにより製造することを特徴とする、請求項10記載の方法。
- 前記超吸収体が、200〜600μmの平均粒度を有することを特徴とする、請求項1から11までのいずれか1項記載の方法。
- 前記超吸収体が、少なくとも10×10−7cm3s/gの生理食塩水流れ誘導性を有することを特徴とする、請求項1から12までのいずれか1項記載の方法。
- 前記超吸収体が、少なくとも10g/gの遠心分離機保持容量を有することを特徴とする、請求項1から13までのいずれか1項記載の方法。
- 前記超吸収体の連続的な製造において品質を制御するための、請求項1から14までのいずれか1項記載の方法の使用。
- 請求項1から15までのいずれか1項により測定を実施するための、測定装置。
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EP18158661.1 | 2018-02-26 | ||
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PCT/EP2019/053928 WO2019162216A1 (de) | 2018-02-26 | 2019-02-18 | Verfahren zur messung der permeabilität von superabsorbern |
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EP (1) | EP3759472B1 (ja) |
JP (1) | JP7239595B2 (ja) |
KR (1) | KR20200123127A (ja) |
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JP7482911B2 (ja) | 2019-07-04 | 2024-05-14 | ベーアーエスエフ・エスエー | 超吸収体の特性を決定する方法 |
DE102022125783A1 (de) | 2022-10-06 | 2024-04-11 | Ist Innuscreen Gmbh | Verfahren zur Aufkonzentrierung mindestens einer anthropogenen Zielsubstanz in einer Probenflüssigkeit |
DE102022125807A1 (de) | 2022-10-06 | 2024-04-11 | Ist Innuscreen Gmbh | Verfahren zur Herstellung einer anthropogenen Zielsubstanz |
Citations (3)
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US20120318046A1 (en) * | 2011-06-17 | 2012-12-20 | The Procter & Gamble Company | Method For Determining Properties Of Superabsorbent Polymer Particles And Of Absorbent Structures Containing Such Particles |
JP2015501684A (ja) * | 2011-11-21 | 2015-01-19 | ザ プロクター アンド ギャンブルカンパニー | 改善された吸収特性を有する吸収性物品 |
JP2017185485A (ja) * | 2016-03-31 | 2017-10-12 | 株式会社日本触媒 | 吸水剤及びその製造方法 |
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DE3831272A1 (de) | 1988-09-14 | 1990-03-15 | Lentia Gmbh | Verfahren und apparatur zur messung der absorptionsgeschwindigkeit von quellfaehigen materialien |
EP0640330B1 (en) * | 1993-06-30 | 2000-05-24 | The Procter & Gamble Company | Hygienic absorbent articles |
EP2535027B1 (en) | 2011-06-17 | 2022-08-17 | The Procter & Gamble Company | Absorbent article having improved absorption properties |
KR101704789B1 (ko) * | 2016-03-23 | 2017-02-08 | 주식회사 엘지화학 | 고흡수성 수지 |
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- 2019-02-18 WO PCT/EP2019/053928 patent/WO2019162216A1/de unknown
- 2019-02-18 KR KR1020207023922A patent/KR20200123127A/ko not_active Application Discontinuation
- 2019-02-18 US US16/968,225 patent/US20210033516A1/en active Pending
- 2019-02-18 CN CN201980015633.0A patent/CN111771121A/zh active Pending
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Publication number | Priority date | Publication date | Assignee | Title |
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US20120318046A1 (en) * | 2011-06-17 | 2012-12-20 | The Procter & Gamble Company | Method For Determining Properties Of Superabsorbent Polymer Particles And Of Absorbent Structures Containing Such Particles |
JP2015501684A (ja) * | 2011-11-21 | 2015-01-19 | ザ プロクター アンド ギャンブルカンパニー | 改善された吸収特性を有する吸収性物品 |
JP2017185485A (ja) * | 2016-03-31 | 2017-10-12 | 株式会社日本触媒 | 吸水剤及びその製造方法 |
Non-Patent Citations (1)
Title |
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SHU-XIN ZHANG; ET AL: "DETERMINATION OF THE SWELLING BEHAVIOR OF SUPERABSORBENT POLYMERS BY A 以下備考", POLYMER TESTING, vol. 62, JPN5021006936, 2 September 2017 (2017-09-02), NL, pages 110 - 114, XP055579970, ISSN: 0004906357, DOI: 10.1016/j.polymertesting.2017.06.020 * |
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JP7239595B2 (ja) | 2023-03-14 |
EP3759472B1 (de) | 2023-01-18 |
CN111771121A (zh) | 2020-10-13 |
KR20200123127A (ko) | 2020-10-28 |
US20210033516A1 (en) | 2021-02-04 |
WO2019162216A1 (de) | 2019-08-29 |
EP3759472A1 (de) | 2021-01-06 |
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