Article (Scientific journals)
Poly(epsilon-caprolactone)/clay nanocomposites by in-situ intercalative polymerization catalyzed by dibutyltin dimethoxide
Lepoittevin, Bénédicte; Pantoustier, Nadège; Devalckenaere, Myriam et al.
2002In Macromolecules, 35 (22), p. 8385-8390
Peer Reviewed verified by ORBi
 

Files


Full Text
Lepoittevin B 2002 Macromolecules 8385.pdf
Publisher postprint (141.15 kB)
Request a copy

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
nanocomposite; clay
Abstract :
[en] Poly(epsilon-caprolactone)/clay nanocomposites were prepared by in-situ ring-opening polymerization of epsilon-caprolactone by using dibutyltin dimethoxide as an initiator/catalyst. A nonmodified Na+-montmorillonite and two montmorillonites surface-modified by dimethyl 2-ethylhexyl (hydrogenated tallow alkyl) and methyl bis(2-hydroxyethyl) (hydrogenated tallow alkyl) ammonium cations, respectively, were used. The evolution of molecular weights was followed in relation to silicate surface modification and clay concentration. The alcohol-bearing organo-modified clay was a co-initiator for the polymerization reaction and thus controlled the molecular weight of the PCL chains. Furthermore, the number-average molecular weight of the growing PCL chains linearly increased with the monomer conversion. Nanocomposites were analyzed by small-angle X-ray diffraction, transmission electron microscopy, and thermogravimetry. The clay dispersion depended on the structure of the alkylammonium used to make the clay more hydrophobic. Exfoliated nanocomposites were formed when hydroxyl-containing alkylammonium. was used; otherwise, intercalated structures were reported. Thermogravimetric analyses showed a higher degradation temperature for the exfoliated structures than for the intercalated ones, both of them exceeding the degradation temperature of unfilled poly(epsilon-caprolactone).
Research center :
Center for Education and Research on Macromolecules (CERM)
Disciplines :
Chemistry
Materials science & engineering
Author, co-author :
Lepoittevin, Bénédicte;  University of Mons-Hainaut (UMH) > Laboratory of Polymeric and Composite Materials (SMPC)
Pantoustier, Nadège;  University of Mons-Hainaut (UMH) > Laboratory of Polymeric and Composite Materials (SMPC)
Devalckenaere, Myriam;  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 :
Poly(epsilon-caprolactone)/clay nanocomposites by in-situ intercalative polymerization catalyzed by dibutyltin dimethoxide
Publication date :
22 October 2002
Journal title :
Macromolecules
ISSN :
0024-9297
eISSN :
1520-5835
Publisher :
Amer Chemical Soc, Washington, United States - Washington
Volume :
35
Issue :
22
Pages :
8385-8390
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
FSE - Fonds Social Européen [BE]
BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique
SSTC - Services Fédéraux des Affaires Scientifiques, Techniques et Culturelles [BE]
Région wallonne for support in the frame of the W.D.U. program: TECMAVER
Available on ORBi :
since 14 January 2009

Statistics


Number of views
93 (5 by ULiège)
Number of downloads
2 (2 by ULiège)

Scopus citations®
 
215
Scopus citations®
without self-citations
177
OpenCitations
 
189

Bibliography


Similar publications



Contact ORBi