Materials Literature
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L’objectif central de cette thèse est d’étudier des phases ordonnées en compétition dans des matériaux magnétiques présentant une structure cristalline tétragonale centrée.Ce travail est divisé en deux parties principales. Dans la première, nous présentons les résultats de notre étude de la compétition entre des états…
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International audience
International audience
International audience
International audience
Modeling of process of strip’s rolling with variable compression and an end’s bending was carried out. The computer model of production of a brake shoe pin of railway transport was defined. The values of the heat transfer coefficients during the contacts of workpiece with air, and the mandrel roll were defined. The he…
Les polyesters aliphatiques, comme le poly(acide malique) et ses dérivés, sont une famille de polymères aux propriétés de bio(comptabilité) et de bio(dégradabilité) remarquables, qui en font des candidats de choix pour l'élaboration de systèmes de vectorisation de principes actifs. Généralement, ces polymères sont syn…
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In this work, the pulp fibers were enzymolyzed to prepare the nano-sized cellulose (NC). The as-prepared samples were characterized by optical microscopy, electron microscopy, and Raman spectra. The experimental results indicated that enzymatic hydrolysis of pulp fibers could produce the spherical NC with a mean parti…
2010 For the past 40 years, obesity rates in the United States have been increasing. In the late 1970s, an estimated 32 percent of adults in the United States were overweight and an additional 15 percent were obese. The 1999 National Health and Nutrition Examination Survey reported that 34 percent of American adults w…
Energy efficient production of nanocellulose fibres is key to establishing this highly-promoted materials in an industrial scale. In this work, we attempt to explain how the mechanical energy input and the chemical composition of the raw materials affect the quality of nanofibres. Bleached eucalyptus Kraft (BEK) pulp,…
Enhancing the usability of paper based materials in forming processes is one major objective to pave the way for a sustainable and bio-based economy. Therefore, modifications of either the forming process or the paper material will provide future opportunities. The present study focuses on the concept of chemical pulp…
We present a new laboratory apparatus designed to study the filtration of a fiber suspension in a parameter range close to that of the real papermaking process. An experimental procedure that combines index-of-refraction matching, high-speed imaging, and article Image Velocimetry (PIV) is used to measure glow and part…
/ La Directive Cadre Européenne sur l'Eau (DCE) exige la mise en oeuvre de suivis hydrobiologiques au sein des réseaux de surveillance afin d'évaluer l'état écologique des masses d'eau. Cette Directive a entraîné le développement et/ou l'adaptation de méthodes de bio-indication, qui doivent faire preuve d'un niveau de…
A novel methodology is developed to visualize and quantify biomolecules adsorption at the cellulose film0liquid interface. Hydrogenated cellulose (HC) films were made from cellulose acetate and deuterated cellulose (DC) films produced using deuterated bacterial cellulose. Deuterated bacterial cellulose was obtained by…
We report the cationic polyelectrolyte (CPAM)-SiO2 nanoparticle (NP) interactions in suspension and in a sheet form, when mixed with microfibrillated (MFC), using dynamic light scattering (DLS) and small angle X-ray scattering (SAXS) techniques. The CPAM-SiO2 NP suspensions were prepared by adding NPs into CPAM drop w…
Nippon Paper industries has been developing Cellulose Nanofibre (CNF) products prepared by the fibrillation of chemically modified pulp since 2007. In November 2013 we started to operate a pre-commercial plant in order to provide CNF for the collaborators, potential users and internal use, after 5 years of fundamental…
Angielscy pisarze agronomiczni zgadzają się na to, iż każdy rolnik posiadać powinien młockarni przed wszystkimi innymi machinami; uważają wynalazek ten za najkorzystniejszy z wszystkich zrobionych w ciągu ostatniego wieku, poprawę gospodarstwa wiejskiego na celu mających. Młockarnie do r. 1818 w Wielkiej Brytanii zapr…
A method of deposition on the surface of metals or ceramics catalytically active compounds by attaching them to the intermediate glass crystalline coatings. The effect of the presence of 3d-transition elements in the intermediate coating to modify the activity of a palladium containing catalyst was studied. The basic…