Reference : (Plasticized) polylactide/(organo-)clay nanocomposites by in situ intercalative polymeri...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
Physical, chemical, mathematical & earth Sciences : Chemistry
Engineering, computing & technology : Materials science & engineering
http://hdl.handle.net/2268/126464
(Plasticized) polylactide/(organo-)clay nanocomposites by in situ intercalative polymerization
English
Paul, Marie-Amélie [Université de Mons-Hainaut - UMH > > Laboratory of Polymeric and Composite Materials (LPCM) > >]
Delcourt, Cécile [Université de Mons-Hainaut - UMH > > Laboratory of Polymeric and Composite Materials (LPCM) > >]
Alexandre, Michaël mailto [Université de Mons-Hainaut - UMH > > Laboratory of Polymeric and Composite Materials (LPCM) > >]
Degée, Philippe [Université de Mons-Hainaut - UMH > > Laboratory of Polymeric and Composite Materials (LPCM) > >]
Monteverde, Fabien [Université de Mons-Hainaut - UMH > > Laboratory of Analytic and Inorganic Chemistry (LAIC) > >]
Rulmont, André mailto [Université de Liège - ULg > Département de chimie (sciences) > General Chemistry and Physics Chemistry Department > >]
Dubois, Philippe [Université de Mons-Hainaut - UMH > > Laboratory of Polymeric and Composite Materials (LPCM) > >]
21-Feb-2005
Macromolecular Chemistry and Physics
Wiley-V C H Verlag Gmbh
206
4
484-498
Yes (verified by ORBi)
International
1022-1352
Weinheim
[en] nanocomposites ; organoclay ; poly(L,L-lactide) ; ring-opening polymerization
[en] Both intercalated and exfoliated poly(L,L-lactide) (P(L,L-LA)/organomodified montmorillonite nanocomposites were synthesized by in situ ring-opening polymerization Of L,L-lactide, in bulk, directly in the presence of the nanofiller. Intercalation of polyester chains was found to appear even for natural unmodified montmorillonite-Na+, while exfoliation occurred when the aluminosilicate layers were modified by ammonium cations bearing primary hydroxyl groups. Clay delamination was effectively triggered by the grafting reaction of the growing PLA chains onto the hydroxyl groups. Aluminium triisopropoxide, triethylaluminium, and stannous octoate, as initiating or co-initiating species, were compared in terms of polymerization control. The influence of nanoclay content (from 1 to 10 wt.-% in inorganics) on morphology and thermal behavior was also studied. In parallel, a highly filled nanocomposite (called masterbatch), prepared by in situ polymerization, was dispersed into a (plasticized) preformed polylactide matrix in the molten state, to reach a better clay delamination than that obtained by direct melt blending. Finally, L-,L-lactide and alpha,w-dihydroxylated poly(ethylene glycol) (PEG 1000) were copolymerized in presence of clay in order to study the behavior of the resulting triblocks towards nanocomposite formation.
Researchers
http://hdl.handle.net/2268/126464
10.1002/macp.200400324

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Restricted access
2005 - Macromol Chem Phys (206) p484.pdfPublisher postprint364.8 kBRequest copy

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.