Organomodification of montmorillonite in supercritical carbon dioxide

Naveau, Elodie; Calberg, Cédric; Detrembleur, Christophe; Jérôme, Christine; Alexandre, Michaël

doi:10.1016/j.clay.2011.01.010

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Article (Scientific journals)

Organomodification of montmorillonite in supercritical carbon dioxide

Naveau, Elodie; Calberg, Cédric; Detrembleur, Christophe et al.

2011 • In Applied Clay Science, 51 (4), p. 467-772

Peer Reviewed verified by ORBi

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https://hdl.handle.net/2268/91531

DOI
10.1016/j.clay.2011.01.010

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Keywords :

supercritical carbon dioxide; clay

Abstract :

[en] The use of organo-montmorillonite as nanofiller for the preparation of polymer nanocomposites still attracts a lot of attention both on experimental and industrial scale. In order to enlarge the range of organo-montmorillonites available for this application, supercritical carbon dioxide (scCO2) was used as a medium for the organomodification process. This environmentally friendly solvent showed a great potential to obtain ready-to-use organo-montmorillonite powders. Intercalation with high degrees of exchange was obtained when the surfactants (alkyl ammonium, phosphonium, and imidazolium salts) were in the liquid state at the reaction temperature. The addition of a small quantity of co-solvent enabled the intercalation of solid surfactants, such as those bearing hydroxyl or carboxyl groups. Basal spacings of montmorillonite modified in scCO2 corresponded to those measured for organo-montmorillonite prepared in the wet process. A detailed investigation of the reaction conditions was finally performed in order to up-scale the process.

Research Center/Unit :

Center for Education and Research on Macromolecules (CERM)

Disciplines :

Materials science & engineering
Chemistry

Author, co-author :

Naveau, Elodie ; Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)

Calberg, Cédric ; Université de Liège - ULiège > Department of Applied Chemistry > Laboratory of Industrial Chemistry

Detrembleur, Christophe ; Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)

Jérôme, Christine ; Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)

Alexandre, Michaël ; Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)

Language :

English

Title :

Organomodification of montmorillonite in supercritical carbon dioxide

Publication date :

March 2011

Journal title :

Applied Clay Science

ISSN :

0169-1317

eISSN :

1872-9053

Publisher :

Elsevier Science, Amsterdam, Netherlands

Volume :

Issue :

Pages :

467-772

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

http://www.sciencedirect.com/science?_ob=MImg&_imagekey=B6V8Y-51YYNTV-7-F&_cdi=5883&_user=532038&_pii=S0169131711000159&_origin=browse&_zone=rslt_list_item&_coverDate=03%2F31%2F2011&_sk=999489995&wchp=dGLzVtb-zSkzV&md5=367beb7b99658773eb8c2cc47167961b&ie=/sdarticle.pdf

Name of the research project :

The "Région Wallonne" in the frame of the FINECLAY project

Funders :

BELSPO - Service Public Fédéral de Programmation Politique scientifique
F.R.S.-FNRS - Fonds de la Recherche Scientifique
Région wallonne

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