Article (Scientific journals)
Biodegradable polyester layered silicate nanocomposites based on poly(epsilon-caprolactone)
Pantoustier, Nadège; Lepoittevin, Bénédicte; Alexandre, Michaël et al.
2002In Polymer Engineering and Science, 42 (9), p. 1928-1937
Peer Reviewed verified by ORBi
 

Files


Full Text
Pantoustier N 2002 Polym Eng & Sci 1928.pdf
Publisher postprint (1.18 MB)
Request a copy

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
nanostructured material; nanocomposite; clay
Abstract :
[en] Nanocomposites based on biodegradable poly(epsilon-caprolactone) (PCL) and layered silicates (montmorillonite, MMT) were prepared either by melt intercalation with PCL or by in situ ring-opening polymerization of epsilon-caprolactone as promoted by the so-called coordination-insertion mechanism. Both non-modified clays (Na+-MMT) and silicates modified by various alkylammonium cations were studied. Mechanical and thermal properties were examined by tensile testing and thermogravimetric analysis. Even at a filler content as low as 3 wt% of inorganic layered silicate, the PCL-layered silicate nanocomposites exhibited improved mechanical properties (higher Young's modulus) and increased thermal stability as well as enhanced flame retardant characteristics as a result of a charring effect. It was shown that the formation of PCL-based nanocomposites depended not only on the nature of the ammonium cation and related functionality but also on the selected synthetic route, melt intercalation vs. in situ intercalative polymerization. Interestingly enough, when the intercalative polymerization of epsilon-caprolactone was carried out in the presence of MMT organo-modified with ammonium cations bearing hydroxyl functions, nanocomposites with much improved mechanical properties were recovered. Those hybrid polyester layered silicate nanocomposites. were characterized by a covalent bonding between the polyester chains and the clay organo-surface as a result of the polymerization mechanism, which was actually initiated from the surface hydroxyl functions adequately activated by selected tin (II) or tin (IV) catalysts.
Research center :
Center for Education and Research on Macromolecules (CERM)
Disciplines :
Chemistry
Materials science & engineering
Author, co-author :
Pantoustier, Nadège;  University of Mons-Hainaut (UMH) > Laboratory of Polymeric and Composite Materials (SMPC)
Lepoittevin, Bénédicte;  University of Mons-Hainaut (UMH) > Laboratory of Polymeric and Composite Materials (SMPC)
Alexandre, Michaël ;  University of Mons-Hainaut (UMH) > Laboratory of Polymeric and Composite Materials (SMPC)
Kubies, Dana;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
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)
Dubois, Philippe ;  University of Mons-Hainaut (UMH) > Laboratory of Polymeric and Composite Materials (SMPC)
Language :
English
Title :
Biodegradable polyester layered silicate nanocomposites based on poly(epsilon-caprolactone)
Publication date :
September 2002
Journal title :
Polymer Engineering and Science
ISSN :
0032-3888
eISSN :
1548-2634
Publisher :
John Wiley & Sons
Volume :
42
Issue :
9
Pages :
1928-1937
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
The "Région Wallonne" and the "Fonds Social Européen" in the frame of Objectit 1-Hainaut: Materia Nova
The "Région Wallonne" in the frame of the W.D.U. program TECMAVER
BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique
Available on ORBi :
since 18 March 2009

Statistics


Number of views
135 (3 by ULiège)
Number of downloads
1 (0 by ULiège)

Scopus citations®
 
89
Scopus citations®
without self-citations
83
OpenCitations
 
71

Bibliography


Similar publications



Contact ORBi