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Dissertation
Chloride and nitrate systems in hydrometallurgy : applications and opportunities
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Year: 1989 Publisher: Delft : Technische Universiteit Delft,

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Iron control and disposal : proceedings of the second international symposium on iron control in hydrometallurgy, Ottawa, Canada, October 20-23, 1996
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ISBN: 0919086713 9780919086715 Year: 1996 Publisher: Montréal : Canadian Institute of Mining and Metallurgy (CIM) = Institut Canadien des Mines et de la Métallurgie,

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Book
Observations sur l'hydrolyse du chlorure ferrique
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Year: 1897 Publisher: Bruxelles : Hayez,

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Dissertation
Synthèse contrôlée de (co)polymères à base de poly(vinylamine) et d'alcool polyvinylique par voie radicalaire en présence de complexes organométalliques
Authors: --- --- --- ---
Year: 2017 Publisher: Liège Université de Liège (ULiège)

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Poly(vinylamine) (PVAm) is involved in a broad range of applications due to its interesting properties including complexation of metallic ions and polyelectrolytes, pH responsiveness, adhesion to surfaces, etc. It is currently prepared by hydrolysis of poly(N-vinylamide)s synthesized by conventional radical polymerization. Although controlling the molecular parameters of PVAm could be useful to finely adjust its properties, it remains challenging. In this work, we developed the controlled homopolymerization of N-vinylacetamide (NVA) via organometallic-mediated radical polymerization (OMRP) in the presence of cobalt complexes. The controlled copolymerization of NVA and vinyl acetate (VAc) was then studied leading to unique well-defined statistical copolymers. In order to have a precise idea of the structure of these copolymers, we determined the comonomers reactivity ratios. The synthesis of block copolymers was also explored. Eventually, the hydrolysis of these NVA/VAc-containing copolymers was optimized giving access to unprecedented poly(vinylamine) and poly(vinylalcohol)-based copolymers.


Dissertation
Synthèse et mise en forme de poudres d'hydroxyapatite destinées à l'impression 3D de pièces céramiques biocompatibles par stéréolithographie
Authors: --- --- --- ---
Year: 2018 Publisher: Liège Université de Liège (ULiège)

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Hydroxyapatite, a calcium phosphate that is the main constituent of bone, is extensively synthesized and shaped to produce synthetic bone and dental prostheses.&#13;Among the available methods of forming ceramics, 3D stereolithography printing offers the following advantages: creation of customizable free forms (customized bone implants), high precision, good surface finish and excellent mechanical properties of produced ceramic parts. Typically, the stereolithography consists in solidifying a photosensitive plastic resin layer by layer with UV radiation. To print ceramic parts, for instance with hydroxyapatite, a ceramic powder is incorporated in the photosensitive resin and then the resulting mixture is printed. The ceramic final part is obtained after a heat treatment to break down the organic components of the printed part.&#13;However, many aspects of stereolithography ceramic printing still need to be developed. The work done in this memory allowed to control the printing process step by step: from the synthesis of the raw material (hydroxyapatite) to the final ceramic pieces after heat treatment.&#13;The main objective was to develop an innovative hydroxyapatite synthesis route to produce a powder with the same characteristics as a commercial powder currently used for ceramic stereolithography printing. This goal achieved, ceramic pieces could be printed with a desktop 3D printer from the synthesized powder L’hydroxyapatite, un phosphate de calcium qui est le principal constituant des os, est largement&#13;synthétisé et mis en forme pour produire des prothèses osseuses et dentaires synthétiques.&#13;Parmi les méthodes de mise en forme de céramiques disponibles, l’impression 3D par&#13;stéréolithographie offre les avantages suivants : la création de formes libres personnalisables (implants osseux sur mesures), une grande précision, une bonne finition de surface et d’excellentes propriétés mécaniques des pièces céramiques produites. Typiquement, la stéréolithographie consiste à solidifier une résine plastique photosensible, couche par couche, grâce à un rayonnement UV. Pour imprimer des pièces céramiques, d’hydroxyapatite par exemple, il suffit d’incorporer une poudre céramique dans la résine photosensible, puis d’imprimer le mélange obtenu. La pièce finale est obtenue après un traitement thermique pour décomposer les composants organiques de la pièce imprimée.&#13;Cependant, de nombreux aspects de l’impression de céramique par stéréolithographie doivent encore être développés. Le travail accompli dans ce mémoire a permis de contrôler chaque étape du processus d’impression : de la synthèse de la matière première (hydroxyapatite) à l’obtention de pièces céramiques après traitement thermique.&#13;L’objectif principal était de pouvoir développer une voie de synthèse innovante d’hydroxyapatite&#13;permettant de produire une poudre répondant aux mêmes caractéristiques qu’une poudre&#13;commerciale actuellement utilisée pour l'impression céramique par stéréolithographie. Cet objectif atteint, des pièces céramiques ont pu être imprimées avec une imprimante 3D de bureau à partir de la poudre synthétisée.


Book
Cellulose science and technology
Authors: --- --- --- ---
ISBN: 9781420066883 1420066889 9782940222414 294022241X 0429131208 9780429131202 Year: 2010 Publisher: Lausanne : Boca Raton : Presses polytechniques et universitaires romandes CRC Press,

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Cellulose is a major constituent of papers made from plant fibers and combustible component of non-food energy crops. An ideal reference for scientists in natural and synthetic polymer research, this book applies basic biology as well as polymer and sugar chemistry to the study of cellulose. It provides key requirements for understanding the complex structure and biosynthesis of cellulose and its dissolution into new solvents. Cellulose Science and Technology also clarifies the enzymatic hydrolysis of cellulose leading to simple sugars that can be fermented into bioethanol. It examines the bac

Pesticide waste management : Technology and regulation. Developed from a symposium sponsored by the Division of Agrochemicals at the Fourth Chemical Congress of North America (202nd National Meeting of the American Chemical Society), New York, August 25-30, 1991.
Authors: --- --- --- ---
ISBN: 0841224803 Year: 1992 Volume: vol 510 Publisher: Washington : American Chemical Society,


Dissertation
Solid-substrate fermentation of soya beans to tempe : Process innovations and product characteristics.
Author:
ISBN: 9054853522 Year: 1995 Publisher: Wageningen : Landbouwuniversiteit te Wageningen,


Dissertation
Physico-chemical stability of tomato products.
Author:
ISBN: 9054853980 Year: 1995 Publisher: Wageningen : Landbouwuniversiteit te Wageningen,


Dissertation
Physical chemistry and process engineering of an emulsion-membrane bioreactor.
Author:
ISBN: 9054853611 Year: 1995 Publisher: Wageningen : Landbouwuniversiteit te Wageningen,

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