Synthesis, characterization and diffusion properties of biomimetic silica-coated gelatine beads

被引：48

作者：

Coradin, T ^{[1
]}

Livage, J ^{[1
]}

机构：

[1] UPMC, CNRS, UMR 7574, F-75252 Paris, France

来源：

MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS | 2005年 / 25卷 / 02期

关键词：

silica; gelatine; biopolymer capsules; diffusion properties; biomimetic materials;

D O I：

10.1016/j.msec.2005.01.010

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Several micro-organisms are able to coat their surface with a silica deposit exhibiting tailored diffusion properties. In a biomimetic approach, we studied the deposition of silica on gelatine beads. Gelatine capsules were obtained by polymer droplet gelation at low temperature. Soaking of these beads in sodium silicate dilute aqueous solutions leads to the formation of a mineral membrane consisting of close-packed silica nanoparticles. Studies of the diffusion of Rhodamine B and myoglobin indicate that the presence of the silica coating significantly modify the permeability of the beads, suggesting possible applications in controlled release systems. (c) 2005 Elsevier B.V All rights reserved.

引用

页码：201 / 205

页数：5

共 23 条

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