WorldCat Identities

Balnois, Eric

Overview
Works: 10 works in 10 publications in 3 languages and 12 library holdings
Roles: Author
Publication Timeline
.
Most widely held works by Eric Balnois
Caractérisation de biopolymères des systèmes aquatiques par microscopie à force atomique by Eric Balnois( Book )

1 edition published in 2001 in French and held by 3 WorldCat member libraries worldwide

La première partie de ce travail a consisté à optimiser les conditions de préparation et d'observation des échantilons à partir de biopolymères "modèles". Des études systématiques des acides humiques et d'un polysaccharide, le succinoglycane, a permis de visualiser les molécules individuelles et de suivre leurs changements de conformation selon la physico-chimie du milieu. Finalement, l'AFM a été appliquée à l'étude de colloïdes naturels, lacustres et marins, et a révélé des différences significatives entre les structures des colloïdes prélevés dans différents sites environnementaux (provenance, profondeur dans la colonne d'eau)
Interfacial interactions in Flax fibre / PLA biocomposite : from model surfaces to real fibres by Gijo Raj( )

1 edition published in 2012 in German and held by 3 WorldCat member libraries worldwide

The overall mechanical properties of natural fibre reinforced biocomposites are largely governed by the intrinsic strength of reinforcement fibres as well as by the level of adhesion between the fibres and the matrix polymer. The research work reported in this manuscript presents a model investigation of the adhesion properties of the major polysaccharides in flax and a polylactic acid polymer matrix, and a correlation between these interactions and the final mechanical properties of the fibre and the composite. The main objective of this multi-length scale analysis is to better understand the complex role of the different polysaccharides present in flax fibres at the biocomposite interface. We first submit a raw flax fibre to two separate treatments, an enzymatic and an alkali one, which are known to indirectly promote the adherence between the reinforcement fibre and a PLA matrix. The detailed investigation of the morphology, mechanical and adherence properties of the treated fibres allows to observe the removal of the middle and primary layers down to the cellulose microfibrils networks of the secondary layers, and underlines the importance of limiting the attack of encrusting amorphous hemicellulose matrix within the secondary layer that is essential both in order to maintain interesting material properties and to promote adhesion with PLA. In a second time, we adapt the colloidal force microscopy to directly probe interaction forces between PLA and the different polymers in flax fibre. The system was first tested on cellulose and PLA to estimate the Hamaker constant and the work of adhesion. From the Nardin and Schultz equation, the experimental data obtained by local techniques such as AFM were found to be more realistic, in contrast, with those obtained from averaging techniques that are known to be not suited for heterogeneous samples such as flax fibres.The colloidal force microscopy was thus used to selectively measure all the possible.interaction between the different polysaccharides of the fibres and the PLA matrix to qualitatively identity the weakest interaction system in a biocomposite. The results underline the important interactions of PLA matrix with both hemicellulose and pectin materials, even at low humidity rate. We postulated that the high water content of these two polysaccharides may be responsible for several mechanisms of interaction with PLA, such as hydrogen bonds, capillary forces or inter-diffusion processes. In parallel, adhesion force mapping of real raw and treated flax fibre's surface by AFM force-volume technique give complementary results that underline an important adhesion with these two polysaccharides
Conformations of succinoglycan as observed by atomic force microscopy( )

1 edition published in 2000 in English and held by 1 WorldCat member library worldwide

Atomic force microscopy of humic substances : effects of pH and ionic strength( )

1 edition published in 1999 in English and held by 1 WorldCat member library worldwide

The study of environmental biopolymers by mathematical modeling and single molecule detection techniques( )

1 edition published in 2001 in English and held by 1 WorldCat member library worldwide

Sample preparation techniques for the observation of environmental biopolymers by atomic force microscopy by Eric Balnois( )

1 edition published in 2002 in English and held by 1 WorldCat member library worldwide

Characterization of norwegian natural organic matter : size, diffusion coefficients and electrophoretic mobilities( )

1 edition published in 1999 in English and held by 0 WorldCat member libraries worldwide

 
Audience Level
0
Audience Level
1
  General Special  
Audience level: 0.95 (from 0.91 for Interfacia ... to 1.00 for Interfacia ...)

Languages