Article (Scientific journals)
Motional heterogeneity of intercalated species in modified clays and poly(epsilon-caprolactone)/clay nanocomposites
Urbanczyk, Laetitia; Hrobarikova, Jana; Calberg, Cédric et al.
2006In Langmuir, 22 (10), p. 4818-4824
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Keywords :
nanostructured material; nanocomposite; clay
Abstract :
[en] Modified laponites and synthetic saponites are used as precursors for the preparation of poly(epsilon-caprolactone) (PCL)/clay nanocomposites. The structure and dynamics of species intercalated in the modified clays and the corresponding nanocomposites are characterized by X-ray diffraction and magic-angle spinning NMR. The influence of the headgroup, the hydrocarbon chain length, and the loading of the surfactant on the nanocomposite formation are discussed. The yield of PCL intercalation is related to the probability of direct polymer-clay interactions and to the size of the clay platelets. Relaxation times in the laboratory and rotating frames that allow characterization of fast and slow molecular dynamics in these systems are discussed, showing a motional heterogeneity of the intercalated species.
Research center :
Center for Education and Research on Macromolecules (CERM)
Disciplines :
Chemistry
Materials science & engineering
Author, co-author :
Urbanczyk, Laetitia ;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Hrobarikova, Jana;  Université de Liège - ULiège > Department of Chemistry > Chimie organique et spectroscopie multinucléaire (COSM)
Calberg, Cédric ;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Jérôme, Robert ;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Grandjean, Jean ;  Université de Liège - ULiège > Department of Chemistry > Chimie organique et spectroscopie multinucléaire (COSM)
Language :
English
Title :
Motional heterogeneity of intercalated species in modified clays and poly(epsilon-caprolactone)/clay nanocomposites
Publication date :
09 May 2006
Journal title :
Langmuir
ISSN :
0743-7463
eISSN :
1520-5827
Publisher :
Amer Chemical Soc, Washington, United States - Washington
Volume :
22
Issue :
10
Pages :
4818-4824
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
The Région Wallonne for its financial support in the frame of the TECMAVER and PROCOMO projects
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