ORBi: Goffin Anne-Lise - From polyester grafting onto POSS nanocage by ring-opening polymerization to high performance polyester/POSS nanocomposites

Reference : From polyester grafting onto POSS nanocage by ring-opening polymerization to high perfor...


	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Chemistry
	To cite this reference:	http://hdl.handle.net/2268/126428

Title :	From polyester grafting onto POSS nanocage by ring-opening polymerization to high performance polyester/POSS nanocomposites
Language :	English
Author, co-author :	Goffin, Anne-Lise [Université de Mons - UMONS > Center of Innovation and Research in Materials and Polymers (CIRMAP) > Laboratory of Polymeric and Composite Materials (LPCM) > >]
	Duquesne, Emmanuel [Université de Mons - UMONS > Center of Innovation and Research in Materials and Polymers (CIRMAP) > Laboratory of Polymeric and Composite Materials (LPCM) > >]
	Raquez, Jean-Marie [Université de Mons - UMONS > Center of Innovation and Research in Materials and Polymers (CIRMAP) > Laboratory of Polymeric and Composite Materials (LPCM) > >]
	Miltner, Hans [Vrije Universiteit Brussel - VUB > > Physical Chemistry and Polymer Science > >]
	Ke, Xiaoxing [Universiteit Antwerpen - UA > > Electron Microscopy for Materials Science > >]
	Alexandre, Michaël [Université de Mons - UMONS > Center of Innovation and Research in Materials and Polymers (CIRMAP) > Laboratory of Polymeric and Composite Materials (LPCM) > >]
	Van Tendeloo, Gustaaf [Universiteit Antwerpen - UA > > Electron Microscopy for Materials Science > >]
	Van Mele, Bruno [Vrije Universiteit Brussel - VUB > > Physical Chemistry and Polymer Science > >]
	Dubois, Philippe [Université de Mons - UMONS > Center of Innovation and Research in Materials and Polymers (CIRMAP) > Laboratory of Polymeric and Composite Materials (LPCM) > >]
Publication date :	2-Jun-2010
Journal title :	Journal of Materials Chemistry
Publisher :	Royal Society of Chemistry
Volume :	20
Pages :	9415-9422
Audience :	International
ISSN :	0959-9428
e-ISSN :	1364-5501
City :	Cambridge
Country :	United Kingdom
Keywords :	[en] nanocomposite ; polyhedral oligo silsesquioxane ; aliphatic polyester
Abstract :	[en] Polyester-grafted polyhedral oligomeric silsesquioxane (POSS) nanohybrids selectively produced by ring-opening polymerization of epsilon-caprolactone and L,L-lactide (A.-L. Goffin, E. Duquesne, S. Moins, M. Alexandre, Ph. Dubois, Eur. Polym. Journal, 2007, 43, 4103) were studied as ‘‘masterbatches’’ by melt-blending within their corresponding commercial polymeric matrices, i.e., poly(epsilon-caprolactone) (PCL) and poly(L,L-lactide) (PLA). For the sake of comparison, neat POSS nanoparticles were also dispersed in PCL and PLA. The objective was to prepare aliphatic polyester-based nanocomposites with enhanced crystallization behavior, and therefore, enhanced thermo-mechanical properties. Wide-angle X-ray scattering and transmission electron microscopy attested for the dispersion of individualized POSS nanoparticles in the resulting nanocomposite materials only when the polyester-grafted POSS nanohybrid was used as a masterbatch. The large impact of such finely dispersed (grafted) nanoparticles on the crystallization behavior for the corresponding polyester matrices was noticed, as evidenced by differential scanning calorimetry analysis. Indeed, well-dispersed POSS nanoparticles acted as efficient nucleating sites, significantly increasing the crystallinity degree of both PCL and PLA matrices. As a result, a positive impact on thermo-mechanical properties was highlighted by dynamic mechanical thermal analysis.
Target :	Researchers
Permalink :	http://hdl.handle.net/2268/126428
DOI :	10.1039/c0jm00283f

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