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Title: Hierarchical meso-mesoporous and macro-mesoporous silica templated by mixtures of polyoxyethylene ­fluoroalkyl ether and triblock copolymer
Author: May-Masnou, Anna
Stébé, Marie José
Blin, Jean Luc
Keywords: Agents tensioactius
Materials porosos
Surface active agents
Porous materials
Issue Date: 23-Dec-2015
Publisher: Wiley-VCH
Abstract: We report here the synthesis of different kinds of hierarchical porous silica materials by using mixtures of an amphiphilic block copolymer (Pluronic P123) and a nonionic fluorinated surfactant. In particular, we have taken advantage of the difference in polarities between the two compounds to design dual-mesoporous materials through the cooperative templating mechanism (CTM). We have undertaken a complete study of this system by varying the composition of the mixed micelles and the synthesis conditions. We have shown that both the dual-mesoporosity and the mesopore ordering are favored when materials are prepared with fluorine-rich and P123-rich micelles. However, when the P123-rich micelles predominate, the mesostructure is less organized and the dual-porosity depends on the P123 content. In addition, concentrated emulsions were formed by incorporating perfluorodecalin (PFD) in the surfactant mixture, and hierarchical macro-mesoporous materials were prepared by combining the CTM and the emulsion templating mechanism.
Note: Versió postprint del document publicat a:
It is part of: European Journal of Inorganic Chemistry, 2015
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ISSN: 1434-1948
Appears in Collections:Articles publicats en revistes (Enginyeria Química i Química Analítica)

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