Preparation of Fluorocarbon LB Films and Oxygen Enrichment

Nobuyuki Higashi; Toyoki Kunitake; Tisato Kajiyama

doi:10.1295/koron.43.761

Preparation of Fluorocarbon LB Films and Oxygen Enrichment

Nobuyuki Higashi, Toyoki Kunitake, Tisato Kajiyama

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7 Citations (Scopus)

Abstract

Fluorocarbon amphiphiles (C₃^FC₂COOH, 2C₃^FC₃-de-C₂N⁺) formed surface monolayers at 21°C on aqueous BaCl₂ (for C₃^FC₂COOH) and on pure water (for 2C₃^FC₃-de-C₂N⁺). These monolayers could be deposited on solid substrates covered by layers of stearic acid, only as a single layer for the Ba salt of C₃^FC₂COOH and up to ten layers (the Z type) for 2C₃^FC₃-de-C₂N⁺. Direct deposition without layers of stearic acid was not possible. The gas flux of oxygen (R_O₂) and nitrogen (R_N₂) through these multilayer membranes was drastically reduced at certain thicknesses of the layer of stearic acid, and the value of R_O₂/R_N₂ concomitantly became larger than unity. R_O₂/R_N₂ depended on the number of fluorocarbon layers, and the maximum value of R_O₂/R_N₂ was 1.7 (R_O₂=7 × 10^-5 cm³(STP)cm^-2.s^-1.cmHg^-1).

Original language	English
Pages (from-to)	761-766
Number of pages	6
Journal	KOBUNSHI RONBUNSHU
Volume	43
Issue number	11
DOIs	https://doi.org/10.1295/koron.43.761
Publication status	Published - 1986
Externally published	Yes

All Science Journal Classification (ASJC) codes

Chemical Engineering (miscellaneous)
Materials Science (miscellaneous)
Environmental Science(all)
Polymers and Plastics

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title = "Preparation of Fluorocarbon LB Films and Oxygen Enrichment",

abstract = "Fluorocarbon amphiphiles (C3FC2COOH, 2C3FC3-de-C2N+) formed surface monolayers at 21°C on aqueous BaCl2 (for C3FC2COOH) and on pure water (for 2C3FC3-de-C2N+). These monolayers could be deposited on solid substrates covered by layers of stearic acid, only as a single layer for the Ba salt of C3FC2COOH and up to ten layers (the Z type) for 2C3FC3-de-C2N+. Direct deposition without layers of stearic acid was not possible. The gas flux of oxygen (RO2) and nitrogen (RN2) through these multilayer membranes was drastically reduced at certain thicknesses of the layer of stearic acid, and the value of RO2/RN2 concomitantly became larger than unity. RO2/RN2 depended on the number of fluorocarbon layers, and the maximum value of RO2/RN2 was 1.7 (RO2=7 × 10-5 cm3(STP)cm-2.s-1.cmHg-1).",

author = "Nobuyuki Higashi and Toyoki Kunitake and Tisato Kajiyama",

year = "1986",

doi = "10.1295/koron.43.761",

language = "English",

volume = "43",

pages = "761--766",

journal = "KOBUNSHI RONBUNSHU",

issn = "0386-2186",

publisher = "The Society of Polymer Science, Japan",

number = "11",

}

TY - JOUR

T1 - Preparation of Fluorocarbon LB Films and Oxygen Enrichment

AU - Higashi, Nobuyuki

AU - Kunitake, Toyoki

AU - Kajiyama, Tisato

PY - 1986

Y1 - 1986

N2 - Fluorocarbon amphiphiles (C3FC2COOH, 2C3FC3-de-C2N+) formed surface monolayers at 21°C on aqueous BaCl2 (for C3FC2COOH) and on pure water (for 2C3FC3-de-C2N+). These monolayers could be deposited on solid substrates covered by layers of stearic acid, only as a single layer for the Ba salt of C3FC2COOH and up to ten layers (the Z type) for 2C3FC3-de-C2N+. Direct deposition without layers of stearic acid was not possible. The gas flux of oxygen (RO2) and nitrogen (RN2) through these multilayer membranes was drastically reduced at certain thicknesses of the layer of stearic acid, and the value of RO2/RN2 concomitantly became larger than unity. RO2/RN2 depended on the number of fluorocarbon layers, and the maximum value of RO2/RN2 was 1.7 (RO2=7 × 10-5 cm3(STP)cm-2.s-1.cmHg-1).

AB - Fluorocarbon amphiphiles (C3FC2COOH, 2C3FC3-de-C2N+) formed surface monolayers at 21°C on aqueous BaCl2 (for C3FC2COOH) and on pure water (for 2C3FC3-de-C2N+). These monolayers could be deposited on solid substrates covered by layers of stearic acid, only as a single layer for the Ba salt of C3FC2COOH and up to ten layers (the Z type) for 2C3FC3-de-C2N+. Direct deposition without layers of stearic acid was not possible. The gas flux of oxygen (RO2) and nitrogen (RN2) through these multilayer membranes was drastically reduced at certain thicknesses of the layer of stearic acid, and the value of RO2/RN2 concomitantly became larger than unity. RO2/RN2 depended on the number of fluorocarbon layers, and the maximum value of RO2/RN2 was 1.7 (RO2=7 × 10-5 cm3(STP)cm-2.s-1.cmHg-1).

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JO - KOBUNSHI RONBUNSHU

JF - KOBUNSHI RONBUNSHU

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Preparation of Fluorocarbon LB Films and Oxygen Enrichment

Abstract

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