Ion permeability of free-suspended layer-by-layer (LbL) films prepared using an alginate scaffold

Katsuhiko Sato; Takuto Shiba; Jun ichi Anzai

doi:10.3390/polym5020696

Ion permeability of free-suspended layer-by-layer (LbL) films prepared using an alginate scaffold

Katsuhiko Sato, Takuto Shiba, Jun ichi Anzai

PHA - Molecular Pharmaceutical Science

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	696-705
Number of pages	10
Journal	Polymers
Volume	5
Issue number	2
DOIs	https://doi.org/10.3390/polym5020696
Publication status	Published - 2013

Keywords

Donnan exclusion
Free-suspended LbL film
Ion permeability
Layer-by-layer film

ASJC Scopus subject areas

Chemistry(all)
Polymers and Plastics

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10.3390/polym5020696

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title = "Ion permeability of free-suspended layer-by-layer (LbL) films prepared using an alginate scaffold",

abstract = "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.",

keywords = "Donnan exclusion, Free-suspended LbL film, Ion permeability, Layer-by-layer film",

author = "Katsuhiko Sato and Takuto Shiba and Anzai, {Jun ichi}",

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T1 - Ion permeability of free-suspended layer-by-layer (LbL) films prepared using an alginate scaffold

AU - Sato, Katsuhiko

AU - Shiba, Takuto

AU - Anzai, Jun ichi

PY - 2013

Y1 - 2013

N2 - 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.

AB - 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.

KW - Donnan exclusion

KW - Free-suspended LbL film

KW - Ion permeability

KW - Layer-by-layer film

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JO - Polymers

JF - Polymers

IS - 2

ER -

Ion permeability of free-suspended layer-by-layer (LbL) films prepared using an alginate scaffold

Abstract

Keywords

ASJC Scopus subject areas

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