Preparation of large, ultra-flexible and free-standing nanomembranes of metal oxide–polymer composite and their gas permeation properties

研究成果: ジャーナルへの寄稿記事

抄録

In this work, fabrication of free-standing nanomembranes of metal oxide (MOx) and polymers by the simple spin-coating method is discussed. First, double-layer nanomembranes containing MOx and epoxy resin of polyethyleneimine and poly[(o-cresyl glycidyl ether)-co-formaldehyde] were prepared. Free-standing nanomembranes were successfully prepared, but defects formed in the metal oxide nanolayer during sharp bending of the nanomembrane. To overcome the fragility of MOx nanolayer, poly(vinyl alcohol) nanolayers were introduced between MOx nanolayers by layer-by-layer (LbL) assembly process. The LbL nanomembrane was also free-standing and was highly flexible during macroscopic membrane manipulations. Even after the transfer of the LbL nanomembrane onto a porous support, it did not have apparent cracks, confirmed by scanning electron microscopy (SEM). The LbL nanomembrane sustained low gas permeance, confirming the absence of significant defects, although it shows excellent flexibility. We believe that the presented LbL nanomembrane could be a platform useful for the design of molecular nanochannels, which is the next challenge for efficient gas separation.
元の言語英語
ページ(範囲)80-89
ページ数10
ジャーナルClean Energy
1
発行部数1
出版物ステータス出版済み - 12 14 2017

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Permeation
Oxides
Gases
Metals
Composite materials
Epoxy Resins
Polyethyleneimine
Defects
Spin coating
Formaldehyde
Polymers
Alcohols
Cracks
Membranes
Fabrication
Scanning electron microscopy

これを引用

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title = "Preparation of large, ultra-flexible and free-standing nanomembranes of metal oxide–polymer composite and their gas permeation properties",
abstract = "In this work, fabrication of free-standing nanomembranes of metal oxide (MOx) and polymers by the simple spin-coating method is discussed. First, double-layer nanomembranes containing MOx and epoxy resin of polyethyleneimine and poly[(o-cresyl glycidyl ether)-co-formaldehyde] were prepared. Free-standing nanomembranes were successfully prepared, but defects formed in the metal oxide nanolayer during sharp bending of the nanomembrane. To overcome the fragility of MOx nanolayer, poly(vinyl alcohol) nanolayers were introduced between MOx nanolayers by layer-by-layer (LbL) assembly process. The LbL nanomembrane was also free-standing and was highly flexible during macroscopic membrane manipulations. Even after the transfer of the LbL nanomembrane onto a porous support, it did not have apparent cracks, confirmed by scanning electron microscopy (SEM). The LbL nanomembrane sustained low gas permeance, confirming the absence of significant defects, although it shows excellent flexibility. We believe that the presented LbL nanomembrane could be a platform useful for the design of molecular nanochannels, which is the next challenge for efficient gas separation.",
author = "Anteneh Mersha and Roman Selyanchyn and Shigenori Fujikawa",
year = "2017",
month = "12",
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language = "English",
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journal = "Clean Energy",
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T1 - Preparation of large, ultra-flexible and free-standing nanomembranes of metal oxide–polymer composite and their gas permeation properties

AU - Mersha, Anteneh

AU - Selyanchyn, Roman

AU - Fujikawa, Shigenori

PY - 2017/12/14

Y1 - 2017/12/14

N2 - In this work, fabrication of free-standing nanomembranes of metal oxide (MOx) and polymers by the simple spin-coating method is discussed. First, double-layer nanomembranes containing MOx and epoxy resin of polyethyleneimine and poly[(o-cresyl glycidyl ether)-co-formaldehyde] were prepared. Free-standing nanomembranes were successfully prepared, but defects formed in the metal oxide nanolayer during sharp bending of the nanomembrane. To overcome the fragility of MOx nanolayer, poly(vinyl alcohol) nanolayers were introduced between MOx nanolayers by layer-by-layer (LbL) assembly process. The LbL nanomembrane was also free-standing and was highly flexible during macroscopic membrane manipulations. Even after the transfer of the LbL nanomembrane onto a porous support, it did not have apparent cracks, confirmed by scanning electron microscopy (SEM). The LbL nanomembrane sustained low gas permeance, confirming the absence of significant defects, although it shows excellent flexibility. We believe that the presented LbL nanomembrane could be a platform useful for the design of molecular nanochannels, which is the next challenge for efficient gas separation.

AB - In this work, fabrication of free-standing nanomembranes of metal oxide (MOx) and polymers by the simple spin-coating method is discussed. First, double-layer nanomembranes containing MOx and epoxy resin of polyethyleneimine and poly[(o-cresyl glycidyl ether)-co-formaldehyde] were prepared. Free-standing nanomembranes were successfully prepared, but defects formed in the metal oxide nanolayer during sharp bending of the nanomembrane. To overcome the fragility of MOx nanolayer, poly(vinyl alcohol) nanolayers were introduced between MOx nanolayers by layer-by-layer (LbL) assembly process. The LbL nanomembrane was also free-standing and was highly flexible during macroscopic membrane manipulations. Even after the transfer of the LbL nanomembrane onto a porous support, it did not have apparent cracks, confirmed by scanning electron microscopy (SEM). The LbL nanomembrane sustained low gas permeance, confirming the absence of significant defects, although it shows excellent flexibility. We believe that the presented LbL nanomembrane could be a platform useful for the design of molecular nanochannels, which is the next challenge for efficient gas separation.

M3 - Article

VL - 1

SP - 80

EP - 89

JO - Clean Energy

JF - Clean Energy

SN - 2515-4230

IS - 1

ER -