Ion Permeability of Free-Suspended Layer-by-Layer (LbL) Films Prepared Using an Alginate Scaffold
Layer-by-layer (LbL) films were prepared over an aperture (diameter 1–5 mm) on a glass plate to study ion permeation across free-suspended LbL films. LbL films were prepared by depositing alternating layers of poly(allylamine hydrochloride) (PAH) and poly(styrene sulfonate) (PSS) on the surface of a...
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2013-06-01
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Online Access: | http://www.mdpi.com/2073-4360/5/2/696 |
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doaj-d6f12facfa124532aa50eadc82f6da002020-11-25T00:59:21ZengMDPI AGPolymers2073-43602013-06-015269670510.3390/polym5020696Ion Permeability of Free-Suspended Layer-by-Layer (LbL) Films Prepared Using an Alginate ScaffoldKatsuhiko SatoTakuto ShibaJun-ichi AnzaiLayer-by-layer (LbL) films were prepared over an aperture (diameter 1–5 mm) on a glass plate to study ion permeation across free-suspended LbL films. LbL films were prepared by depositing alternating layers of poly(allylamine hydrochloride) (PAH) and poly(styrene sulfonate) (PSS) on the surface of a glass plate with an aperture filled with an alginate gel, followed by dissolution of the alginate gel. PAH-PSS films prepared in this way showed permeability to inorganic salts, depending on the size and charge. Permeability to alkali metal chlorides depended on the Stokes radius of the alkali metal cations. The effect of the type of halide was negligible because of the halides’ smaller ionic radii. Permeation of multivalent ions such as Ru(NH3)63+ and [Fe(CN)6]3− was severely suppressed owing to Donnan exclusion.http://www.mdpi.com/2073-4360/5/2/696layer-by-layer filmfree-suspended LbL filmion permeabilityDonnan exclusion |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Katsuhiko Sato Takuto Shiba Jun-ichi Anzai |
spellingShingle |
Katsuhiko Sato Takuto Shiba Jun-ichi Anzai Ion Permeability of Free-Suspended Layer-by-Layer (LbL) Films Prepared Using an Alginate Scaffold Polymers layer-by-layer film free-suspended LbL film ion permeability Donnan exclusion |
author_facet |
Katsuhiko Sato Takuto Shiba Jun-ichi Anzai |
author_sort |
Katsuhiko Sato |
title |
Ion Permeability of Free-Suspended Layer-by-Layer (LbL) Films Prepared Using an Alginate Scaffold |
title_short |
Ion Permeability of Free-Suspended Layer-by-Layer (LbL) Films Prepared Using an Alginate Scaffold |
title_full |
Ion Permeability of Free-Suspended Layer-by-Layer (LbL) Films Prepared Using an Alginate Scaffold |
title_fullStr |
Ion Permeability of Free-Suspended Layer-by-Layer (LbL) Films Prepared Using an Alginate Scaffold |
title_full_unstemmed |
Ion Permeability of Free-Suspended Layer-by-Layer (LbL) Films Prepared Using an Alginate Scaffold |
title_sort |
ion permeability of free-suspended layer-by-layer (lbl) films prepared using an alginate scaffold |
publisher |
MDPI AG |
series |
Polymers |
issn |
2073-4360 |
publishDate |
2013-06-01 |
description |
Layer-by-layer (LbL) films were prepared over an aperture (diameter 1–5 mm) on a glass plate to study ion permeation across free-suspended LbL films. LbL films were prepared by depositing alternating layers of poly(allylamine hydrochloride) (PAH) and poly(styrene sulfonate) (PSS) on the surface of a glass plate with an aperture filled with an alginate gel, followed by dissolution of the alginate gel. PAH-PSS films prepared in this way showed permeability to inorganic salts, depending on the size and charge. Permeability to alkali metal chlorides depended on the Stokes radius of the alkali metal cations. The effect of the type of halide was negligible because of the halides’ smaller ionic radii. Permeation of multivalent ions such as Ru(NH3)63+ and [Fe(CN)6]3− was severely suppressed owing to Donnan exclusion. |
topic |
layer-by-layer film free-suspended LbL film ion permeability Donnan exclusion |
url |
http://www.mdpi.com/2073-4360/5/2/696 |
work_keys_str_mv |
AT katsuhikosato ionpermeabilityoffreesuspendedlayerbylayerlblfilmspreparedusinganalginatescaffold AT takutoshiba ionpermeabilityoffreesuspendedlayerbylayerlblfilmspreparedusinganalginatescaffold AT junichianzai ionpermeabilityoffreesuspendedlayerbylayerlblfilmspreparedusinganalginatescaffold |
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1725217919015583744 |