ORBi: Plougonven Erwan - Microstructure characterisation of nanocomposite polymeric foams by X-ray microtomography

Reference : Microstructure characterisation of nanocomposite polymeric foams by X-ray microtomography


	Document type :	Scientific congresses and symposiums : Poster
	Discipline(s) :	Engineering, computing & technology : Chemical engineering
	To cite this reference:	http://hdl.handle.net/2268/111961

Title :	Microstructure characterisation of nanocomposite polymeric foams by X-ray microtomography
Language :	English
Author, co-author :	Plougonven, Erwan [Université de Liège - ULg > Département de chimie appliquée > Génie chimique - Procédés et développement durable >]
	Marchot, Pierre [Université de Liège - ULg > Département de chimie appliquée > Département de chimie appliquée >]
	Detrembleur, Christophe [Université de Liège - ULg > > Centre d'études et de rech. sur les macromolécules (CERM) >]
	Tran, Minh Phuong [Université de Liège - ULg > > Centre d'études et de rech. sur les macromolécules (CERM) >]
	Léonard, Angélique [Université de Liège - ULg > Département de chimie appliquée > Génie chimique - Procédés et développement durable >]
Publication date :	21-Sep-2011
Page number :	A0
On invitation :	No
Audience :	International
Event name :	4th International Workshop on Process Tomography
Event date :	from 21-09-2077 to 23-09-2011
Event organizer :	International Society for Industrial Process Tomography
	Institute of Mechanics, Chinese Academy of Sciences
Event place (city) :	Chengdu
Event country :	China
Keywords :	[en] Polymeric foam ; Nanocomposites ; Microtomography ; Autocorrelation
Abstract :	[en] Recent advances in microstructured materials have given rise to many new types of composites that exhibit original and interesting physical properties. For example, a nanocomposite made of carbon nanotubes inside a polymer matrix shows exceptional electromagnetic interference shielding effectiveness when foamed. However, the effective properties of such materials strongly depend on the shape and topology of the microstructural cells. An accurate method for investigating the cellular microstructure is X-ray microtomography (XRµT), for it is non-destructive, and it provides 3D geometric information. Although it cannot be used to observe nanofiller dispersion, it has a strong potential for cell structure characterization. In order to reduce the need for trial and error for tailoring these materials, our objective is to characterize, using XRµT, two different types of foaming procedures, namely supercritical CO2 batch foaming and freeze drying. As the resolution is limited compared to cell size, we have developed a novel statistical method based on 3D autocorrelation to determine characteristic length and examine anisotropy. We present results for these two types of foams and show the limitations of this method.
Research units :	Laboratory of Chemical Engineering (LGC), Faculty of Applied Sciences, ULg ; Centre for Education and Research on Macromolecules (CERM), Faculty of Sciences, ULg
Funders :	Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
Name of the research project :	ARC project 09/14-02 - From Imaging to geometrical modelling of complex micro structured materials: Bridging computational engineering and material science
Target :	Researchers
Permalink :	http://hdl.handle.net/2268/111961

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