Dissertations / Theses on the topic 'Produits chimiques textiles – Recyclage'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 18 dissertations / theses for your research on the topic 'Produits chimiques textiles – Recyclage.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.
Powar, Ajinkya. "ACV et éco-conception dans le domaine de l'élimination des produits chimiques des déchets textiles pour le recyclage des textiles." Electronic Thesis or Diss., Université de Lille (2018-2021), 2021. http://www.theses.fr/2021LILUN040.
The textile industry is evolving rapidly, and is also constantly changing. It is constantly developing new techniques for the recycling of the textiles and further research is vital for the future needs. The capability to recycle a textile material is a step towards a more green and sustainable industry. However, there are various challenges and difficulties associated with the recycling of textiles. Colorants and other impurities present on the textiles pose a big challenge to the continuity of the chemical recycling. The purpose of our study is to find out methods for the removal of the dyes or colorants from the cotton textiles for the end of life scenarios like recycling. The removal process of the chemical additives in an ecological way would add value to the recycling of textiles, which would help to obtain a recycled textile with the upgraded quality. To examine this subject, a literature study with respect to the chemicals and the removal process along with the recycling methods was done. In general, alkaline reductive treatment is performed using sodium hydroxide and reducing agent like sodium hydrosulphite for the color stripping of the reactive dyed textiles. Bibliographic survey on the various color stripping process, their drawbacks, viability for industrial scale-up etc was also performed. In this study, we have proposed the application of the ozone assisted process for the color stripping of the reactive dyed textiles using the pilot scale setup. The quality of the color stripped fabrics was determined in terms of the color stripping %, mechanical properties and the colorimetric analysis. Response surface methodology tools like the Box-Behnken design was utilized to examine the effects of three parameters like pH of the treatment (3-7), the reaction time (10-50 min) and the ozone concentration (5-85 g/m3 of ozone). With the ozonation process, color stripping of almost 98 % was achieved. The ozonation process is done at room temperature and also can be performed without any harsh chemicals. Additionally, we have also studied the other color stripping methods like the glucose based process. The results demonstrate that the glucose assisted process can emerge as an ecological alternative to the conventional process. Glucose can act as a green alternative reducing agent to the conventional reducing agent like sodium hydrosulphite. The damage to the mechanical properties are less as compared to the conventional and the ozone based process. However, the glucose assisted process utilized high temperatures for efficient color stripping. Finally, the study has highlighted the need of developing novel methods with minimum damage to the quality of the fibers. Amongst all the impact indicators, “Water resource depletion” is the highest for all the ozonation processes since it has the greatest relative value after normalization. It was found that the major contributors to the environmental impacts were Electricity and Oxygen formation. To optimize the impacts, new experimental conditions have been studied. Even, Color stripping of the pigment printed textiles was studied with the ozone assisted process. This study also highlights the need to study presence of contaminants like coatings present on the textiles during their end of life
Bao, Xulei. "L'impact de l'extraction sous vide avec recyclage sur l'application des solutions de produits chimiques aux nappes textiles." Mémoire, Université de Sherbrooke, 1990. http://savoirs.usherbrooke.ca/handle/11143/967.
Drevelle, Christophe Delobel René Duquesne Sophie Le Bras Michel. "Étude de la dégradation de films à base de résine acrylique utilisée dans l'industrie textile." [S.l.] : [s.n.], 2002. http://www.univ-lille1.fr/bustl-grisemine/pdf/memoires/F2002-153.pdf.
Sur la p. de titre : DEA-Structure et dynamique des systèmes réactifs, PERF-Procédés d'élaboration de revêtements fonctionnels. Bibliogr. f. : 21-22. Annexes.
Leclercq, Hervé. "Contribution à l'étude du comportement des colorants réactifs lors des traitements hydrothermiques post teinture." Mulhouse, 1987. http://www.theses.fr/1987MULH0041.
Convert, Reynald. "Contribution au développement d'un système expert pour la formulation des recettes de teinture." Mulhouse, 1998. http://www.theses.fr/1998MULH0525.
Lusinchi, Jean-Marie. "Optimisation des propriétés des mélanges de polyéthylène térephtalate avec les polyoléfines et le PVC." Montpellier 2, 1993. http://www.theses.fr/1993MON20192.
Grand, Julien. "Développement de nouveaux composés à l'iode hypervalent et leurs utilisations dans des réacions d'oxydation organocatalysées." Caen, 2013. http://www.theses.fr/2013CAEN2061.
Readily available hypervalent iodine compounds are considered as safe and environmentally friendly reagents for oxidative transformations. Since their discovery, more and more reagents and/or procedures have been developed and optimized affording efficient and economic hypervalent iodine chemistry protocols. Noticing those challenging research areas, this PhD work was orientated to encompass three actual topics of hypervalent iodine chemistry: (i) Straightforward synthesis of substituted dibenzofurans and novel fluorinated iododiarylethers were developped starting from substituted diaryliodolium salts (the cyclic variants of diaryliodonium salts). (ii) Various iodine containing cycloadducts were synthesized from the building block methyl 3-iodopropiolate and then evaluated as oxidative organocatalysts in oxidative transformations. (iii) The development of recyclable hypervalent iodine organo-catalysts was carried out by fixing iodine on nanometer-sized magnetically separable particles. These recyclable iodine containing nanoparticles were successfully evaluated as oxidative organocatalysts in oxidative transformations
Lalou, Ahmed. "Mise au point d'un procédé d'extraction des hémicelluloses à partir d'un substrat végétal ligno-cellulosique : application au cas des coques de tournesol." Toulouse, INPT, 1995. http://www.theses.fr/1995INPT028G.
Ezzahar, Samira. "Electro-extraction des cations en solution diluée par l'association de membranes et textiles échangeurs d'ions." Montpellier 2, 1996. http://www.theses.fr/1996MON20272.
Aubry, Carole. "Développement et mise en oeuvre de structures textiles multifonctionnelles contenant des nanotubes de carbone : application aux capteurs chimiques pour la détection de solvants." Thesis, Lille 1, 2009. http://www.theses.fr/2009LIL10153/document.
This work is performed through the European project Inteltex. The aim is to develop new textile structures for the solvent detection. The use of CPC (Conductive Polymer Composite) composed of an insulating polymer matrix and conductive fillers, allows to detect the solvent presence by the swelling of the polymer that induces the conductive network deconnexion and the decrease of the electrical conductivity. The use of carbon nanotubes (CNT) as conductive fillers is a biggest advantage because only a low content is necessary to achieve the appropriate electrical conductivity for sensing (10-3 S/m). The different sensitive and spinnable matrices are polycarbonate (PC), polylactide (PLA) and polyethylene terephthalate (PET). The percolation threshold of CNT in 1.5 mm diameter monofilament, produced by extrusion, is determined between 1.5 and 2 wt.% of CNT. The elaboration of multifilament yarns by melt spinning process show a decrease of the conductivity with the drawing effect. In order to maintain the electrical properties, PLA fibers containing at least 4 % of CNT and having a minimum diameter of 80 µm have to be produced. In this way it is necessary to introduce a plasticizer to improve the composites spinnability. The electrical, thermal, mechanical, morphological properties and fluidity of filaments were studied depending on the processing conditions and their composition. Composite fibers, close the percolation threshold, show sensitivity to humidity, ethanol and toluene
Laktionov, Evgueni Viktorovitch. "Déminéralisation de solutions électrolytiques diluées : Analyse comparative des performances de différents procédés d'électrodialyse." Montpellier 2, 1998. http://www.theses.fr/1998MON20088.
Schrijvers, Dieuwertje. "Evaluation environnementale des options de recyclage selon la méthodologie d’analyse de cycle de vie : établissement d’une approche cohérente appliquée aux études de cas de l’industrie chimique." Electronic Thesis or Diss., Bordeaux, 2017. http://www.theses.fr/2017BORD0555.
Modeling of recycling – and allocation in general – is a heavily debated topic in the Life Cycle Assessment (LCA) domain. This thesis aimed to find a coherent scientific approach to model recycling in LCA that provides relevant information to companies. Existing allocation procedures are captured by mathematical formulas and linked to an LCA goal and an attributional or consequential approach in a systematic framework. A review of official guidelines showed that none of them provides recommendations on allocation that is consistent with this framework. A partitioning approach was identified for attributional LCA (a-LCA). This approach is based on subjective assumptions, which are made explicit by axioms. In consequential LCA (c-LCA), the market-price ratio between the recycled and substituted primary material is introduced as a new indicator to identify whether additional recycling substitutes the production of primary materials or avoids waste treatment. The processes that are affected by a changing demand for a product are identified by a causal loop diagram, which also includes stockpiling as a new element in c-LCA. The application of the allocation procedures is demonstrated by a case study of the recycling of rare earth elements (REEs) from used fluorescent lamps. The a-LCA indicated that recycled REEs are more sustainable than primary REEs. The c-LCA showed that recycling is environmentally beneficial as long as the REEs are used in fluorescent lamps that substitute less energy-efficient halogen lamps. This demonstrates that both LCA approaches provide different but useful information for companies. Suggestions are given for policy measures when the market situation does not stimulate environmentally beneficial behavior. It is recommended, among other options, to extend the causal loop diagram of c-LCA to include additional mechanisms, such as rebound effects
Akbari, Ahmad. "Elaboration de fibres creuses de nanofiltration par photogreffage : application au traitement de solutions de colorant." Toulouse 3, 2003. http://www.theses.fr/2003TOU30066.
Amounas, Mohamed. "Elaboration de membranes catalytiques à enzymes immobilisés par reconnaissance moléculaire. Application au traitement de milieux aqueux." Montpellier 2, 2002. http://www.theses.fr/2002MON20086.
Schrijvers, Dieuwertje. "Evaluation environnementale des options de recyclage selon la méthodologie d’analyse de cycle de vie : établissement d’une approche cohérente appliquée aux études de cas de l’industrie chimique." Thesis, Bordeaux, 2017. http://www.theses.fr/2017BORD0555/document.
Modeling of recycling – and allocation in general – is a heavily debated topic in the Life Cycle Assessment (LCA) domain. This thesis aimed to find a coherent scientific approach to model recycling in LCA that provides relevant information to companies. Existing allocation procedures are captured by mathematical formulas and linked to an LCA goal and an attributional or consequential approach in a systematic framework. A review of official guidelines showed that none of them provides recommendations on allocation that is consistent with this framework. A partitioning approach was identified for attributional LCA (a-LCA). This approach is based on subjective assumptions, which are made explicit by axioms. In consequential LCA (c-LCA), the market-price ratio between the recycled and substituted primary material is introduced as a new indicator to identify whether additional recycling substitutes the production of primary materials or avoids waste treatment. The processes that are affected by a changing demand for a product are identified by a causal loop diagram, which also includes stockpiling as a new element in c-LCA. The application of the allocation procedures is demonstrated by a case study of the recycling of rare earth elements (REEs) from used fluorescent lamps. The a-LCA indicated that recycled REEs are more sustainable than primary REEs. The c-LCA showed that recycling is environmentally beneficial as long as the REEs are used in fluorescent lamps that substitute less energy-efficient halogen lamps. This demonstrates that both LCA approaches provide different but useful information for companies. Suggestions are given for policy measures when the market situation does not stimulate environmentally beneficial behavior. It is recommended, among other options, to extend the causal loop diagram of c-LCA to include additional mechanisms, such as rebound effects
Zahour, Selim. "Performances de fibres synthétiques issues du recyclage. Role des propriétés aux interfaces sur le comportements au temps et à l'usage." Thesis, Normandie, 2018. http://www.theses.fr/2018NORMR019/document.
We focused on physical ageing of a non-woven produced by recycled fibers from plastic bottles. This non-woven is produced by drylaid-textile process and is used for building thermal insulation. Two networks are visible and structural relaxation has been investigated through the study of evolution of one fiber skin part with different couple time, temperature. Physical ageing of polymers can be followed by structural relaxation process. We showed that structural relaxation process is very long for temperatures of use far from glass transition temperature. Same results have been shown on the global non-woven stored in non-insulated box governed by Normandy weather. The combination of the two previous results reinforce our basic idea ; the insulator properties variation will be stable for long time only if temperature of use is far from glass transition temperature
Li, Jiayi. "Methodological developments in imaging and new physico-chemical understanding of archaeological flax-based textiles from the ancient East (3rd and 2nd millennium BC)." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLV031.
Archaeological textile remains from the ancient East are rare. In Mesopotamia, most of the knowledge about textiles comes from cuneiform texts. Made from animal or vegetable fibres, textiles are perishable in most archaeological environments. One of the main processes of exceptional preservation of archaeological fibres involves contact with a metallic artefact, this phenomenon is called "mineralization". Very little work has been done on the in-depth study of the mineralization processes of cellulosic textiles. This PhD work consisted of a multi-scale study of the interaction between copper-base substrate and ancient textiles, based on samples from the archaeological sites of Tello, Nausharo and Gonur-Depe (3rd and 2nd millennium BC). The work made it possible to implement a new imaging methodology using synchrotron-based semi-quantitative X-ray microtomography to describe the composition of these complex, heterogeneous and reactive systems in 3d. These developments have allowed us to deepen the archaeological description of these textiles and their burial context in relation to the question of their production and use in past times. Finally, we discussed the description of the hybrid system of fibre-corrosion product and the presence of organic signatures in these altered hybrid systems in order to describe the mechanisms underlying their exceptional conservation
Contamine, Raphaël. "Contribution à l’étude du comportement mécanique de composites textile-mortier : application à la réparation et/ou renforcement de poutres en béton armé vis-à-vis de l’effort tranchant." Thesis, Lyon 1, 2011. http://www.theses.fr/2011LYO10271/document.
This research focuses on repairing and strengthening concrete structures with composite materials. In this particular domain, carbon-epoxy composites are of considerable interest, but still room for improvement. The main objective of this thesis is to show alternatives to these composites, such as Textile Reinforced Concrete (TRC). Feasibility, performances and behavior of this alternative composite are examined. An experimental and analytical approach, at the micro-, meso- and macroscopic scale are conducted, notably thanks to the technique of digital image correlation for in-plane displacement measurement. Regarding the study of the material, a rather handy, reliable and efficient procedure of a direct tensile test was designed and validated. To enable a better understanding of the TRC behavior, 98 different TRC configurations were tested thanks to this procedure. The links between local mechanisms and macroscopic scale behavior were notably studied. Finally, key levers for optimizing the TRC were determined. On the structural level, a study was conducted on 11 beams shear strengthened by bonding of prefabricated plates or by contact molding. It shows that TRC solutions compare favorably with carbon-epoxy composites. Also, the local behavior was thoroughly assessed, notably the change of forces carried by the composite material and the truss model validity. A multi-cracking or pull-out behavior of the TRC was put forward depending on its application process