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Euskal Herriko Unibertsitatea / Universidad del País Vasco

1. Manalastas, William. Development of ceramic lithium ion electrolytes for high performance batteries .

Degree: 2016, Euskal Herriko Unibertsitatea / Universidad del País Vasco

The electromobility revolution has promoted research unto cutting-edge battery concepts with high energy and power densities, with paramount premium on safety. The electrolyte in these devices has to be insulating to electrons but highly conductive to ions with a wide range of electrochemical stability during operation. Using a solid electrolyte will allow the use of lithium metal as an anode, by blocking the Li dendrite formation, and the exploration of high-voltage cathode materials. In this regard, the use of ceramic oxides can also provide safer, low cost devices with the possibility of miniaturization that would boost the use of batteries in large scale applications.This PhD project aimed to understand the relationship between crystal structure and microstructure with Li-mobility mechanisms within garnet-structured oxide materials. An engineered material with superior ionic conductivity has been developed (1 mS/cm), and its application in a full-cell battery investigated in detail. Advisors/Committee Members: Kilner, John Anthony (advisor), Aguesse, Frederick (advisor).

Subjects/Keywords: electrochemistry; polyelectrolytes; diffusion in solids; electroquímica; polielectrolitos; difusión en sólidos

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Manalastas, W. (2016). Development of ceramic lithium ion electrolytes for high performance batteries . (Doctoral Dissertation). Euskal Herriko Unibertsitatea / Universidad del País Vasco. Retrieved from http://hdl.handle.net/10810/22130

Chicago Manual of Style (16th Edition):

Manalastas, William. “Development of ceramic lithium ion electrolytes for high performance batteries .” 2016. Doctoral Dissertation, Euskal Herriko Unibertsitatea / Universidad del País Vasco. Accessed June 18, 2019. http://hdl.handle.net/10810/22130.

MLA Handbook (7th Edition):

Manalastas, William. “Development of ceramic lithium ion electrolytes for high performance batteries .” 2016. Web. 18 Jun 2019.

Vancouver:

Manalastas W. Development of ceramic lithium ion electrolytes for high performance batteries . [Internet] [Doctoral dissertation]. Euskal Herriko Unibertsitatea / Universidad del País Vasco; 2016. [cited 2019 Jun 18]. Available from: http://hdl.handle.net/10810/22130.

Council of Science Editors:

Manalastas W. Development of ceramic lithium ion electrolytes for high performance batteries . [Doctoral Dissertation]. Euskal Herriko Unibertsitatea / Universidad del País Vasco; 2016. Available from: http://hdl.handle.net/10810/22130


Pontifical Catholic University of Rio de Janeiro

2. LINA MERCEDES DAZA BARRANCO. [en] SILICA NANOPARTICLES FUNCTIONALIZED WITH AMMONIUM GROUPS AND ANIONIC POLYMERS FOR STABILIZATION OF PICKERING EMULSIONS CONTAINING INSECT REPELLENT.

Degree: 2019, Pontifical Catholic University of Rio de Janeiro

[pt] Atualmente a crescente demanda do uso de repelentes de insetos tem promovido a pesquisa de produtos mais eficazes e com uma maior durabilidade da ação repelente. O objetivo deste trabalho foi a obtenção de novas nanopartículas com propriedades interfaciais modificadas superficialmente com grupos funcionais catiônicos e polímeros aniônicos, com o intuito de melhorar a estabilidade de emulsões Pickering contendo um princípio ativo, N,N -dimetil-m-toluamida (DEET), comumente utilizado nos repelentes comerciais. A obtenção das nanopartículas incluiu a funcionalização inicial da superfície de nanopartículas de sílica comerciais com grupos amino secundários (R-NH2), seguido da introdução de grupos catiônicos de amônio quaternário (R-NR4 positivo) e posterior complexação eletrostática com polímeros aniônicos (poli(ácido acrílico), PAA, e poli(4-estireno sulfonato de sódio), PSS). As nanopartículas modificadas mostraram boa dispersabilidade em meio aquoso, favorecendo a estabilização de emulsões de tipo óleo em água (O/A). Os melhores resultados dos estudos de estabilidade no tempo das emulsões foram obtidos usando as nanopartículas catiônicas (SiNP-A,G) recobertas com PAA e com a mistura de polímeros (PAA mais PSS). As emulsões Pickering obtidas com as nanopartículas de sílica recobertas com PAA mostraram os melhores resultados na retardação da evaporação do DEET, com potencial uso para liberação lenta deste composto.

[en] Currently the increasing demand for insect repellent use has promoted research into more effective products and a longer repellent action. The objective of this work was to obtain new nanoparticles by surface modification with cationic functional groups and anionic polymers, with the aim of improving the stability of Pickering emulsions containing an active ingredient, N,N -diethyl-m-toluamide (DEET) commonly used in commercial repellents. The preparation of the nanoparticles included initial surface functionalization of commercial silica nanoparticles with secondary amino groups (R-NH2), followed by the introduction of cationic quaternary ammonium groups (R-NR4 positive) and subsequent electrostatic complexation with anionic polymers (poly (acrylic acid), PAA, and poly(sodium 4-styrenesulfonate), PSS). The modified nanoparticles showed good dispersibility in aqueous medium, favoring the stabilization of emulsions oil-in-water (O/W). The best results of the emulsion time stability studies were obtained using cationic silica nanoparticles (SiNP-A,G) covered with PAA and with the polymer mixture (PA plus PSS). The Pickering emulsions obtained with the cationic silica nanoparticles coated with PAA showed the best results in retarding DEET evaporation, with potential use for slow release of this compound.

Advisors/Committee Members: AURORA PEREZ GRAMATGES, AURORA PEREZ GRAMATGES.

Subjects/Keywords: [pt] NANOPARTICULAS DE SILICA MODIFICADAS; [en] MODIFIED SILICA NANOPARTICLES; [pt] EMULSOES PICKERING; [en] PICKERING EMULSIONS; [pt] POLIELETROLITOS; [en] POLYELECTROLYTES; [pt] DEET; [en] DEET

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

BARRANCO, L. M. D. (2019). [en] SILICA NANOPARTICLES FUNCTIONALIZED WITH AMMONIUM GROUPS AND ANIONIC POLYMERS FOR STABILIZATION OF PICKERING EMULSIONS CONTAINING INSECT REPELLENT. (Thesis). Pontifical Catholic University of Rio de Janeiro. Retrieved from http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=36257

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

BARRANCO, LINA MERCEDES DAZA. “[en] SILICA NANOPARTICLES FUNCTIONALIZED WITH AMMONIUM GROUPS AND ANIONIC POLYMERS FOR STABILIZATION OF PICKERING EMULSIONS CONTAINING INSECT REPELLENT.” 2019. Thesis, Pontifical Catholic University of Rio de Janeiro. Accessed June 18, 2019. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=36257.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

BARRANCO, LINA MERCEDES DAZA. “[en] SILICA NANOPARTICLES FUNCTIONALIZED WITH AMMONIUM GROUPS AND ANIONIC POLYMERS FOR STABILIZATION OF PICKERING EMULSIONS CONTAINING INSECT REPELLENT.” 2019. Web. 18 Jun 2019.

Vancouver:

BARRANCO LMD. [en] SILICA NANOPARTICLES FUNCTIONALIZED WITH AMMONIUM GROUPS AND ANIONIC POLYMERS FOR STABILIZATION OF PICKERING EMULSIONS CONTAINING INSECT REPELLENT. [Internet] [Thesis]. Pontifical Catholic University of Rio de Janeiro; 2019. [cited 2019 Jun 18]. Available from: http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=36257.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

BARRANCO LMD. [en] SILICA NANOPARTICLES FUNCTIONALIZED WITH AMMONIUM GROUPS AND ANIONIC POLYMERS FOR STABILIZATION OF PICKERING EMULSIONS CONTAINING INSECT REPELLENT. [Thesis]. Pontifical Catholic University of Rio de Janeiro; 2019. Available from: http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=36257

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

3. Saint-Aubin, Christine de. Conception de nouveaux matériaux conducteurs extensibles à base de multicouches de polyélectrolytes sur support silicone : Conception of new stretchable conducting materials based on polyelectrolyte multilayers on silicon substrate.

Degree: Docteur es, Chimie des matériaux, 2013, Mulhouse

Cette thèse propose tout d’abord une méthode originale, appelée 2 en 1, de construction contrôlée, couche-par-couche, de films de polyélectrolytes, basée sur le dépôt d’un unique complexe polycation-polyanion. Détaillée dans le cas du poly(éthylènedioxythiophène)-poly(styrènesulfonate) PEDOT-PSS, la méthode est ensuite étendue avec le même succès à d’autres complexes (poly(éthylèneimine) branché-poly(4 styrènesulfonate), poly(diallyldiméthylammonium)-poly(4 styrènesulfonate) et poly(allylamonium)-poly(4 styrènesulfonate)).Les films 2 en 1 de PEDOT PSS sont robustes vis-à-vis d’un recuit thermique et possèdent une conductivité électronique indépendante de leur épaisseur. Cette conductivité peut être améliorée en utilisant un composite contenant des nanoparticules d’or Au Np PEDOT PSS. Des superstructures alternant dépôts de PEDOT PSS et de composite ont, en outre, pu être construites.La construction est contrôlée non seulement sur des substrats rigides (verre, wafer de silicium) mais également sur des substrats élastomère de type silicone (polydiméthylsiloxane PDMS). Le traitement du PDMS par polymérisation plasma d’EDOT sous vide permet le dépôt subséquent de films 2 en 1 de PEDOT PSS. Par ailleurs, la pulvérisation cathodique d’or sur le PDMS permet d’obtenir des conducteurs étirables, de surcroît utilisables comme substrats de films 2 en 1 de PEDOT PSS.Enfin, de nouveaux complexes aqueux synthétisés par voie chimique à partir d’EDOT et d’un polysaccharide (sulfate de chondroïtine A) ont conduit à des films présentant une très bonne conduction qui peut être augmentée par inclusion de nanoparticules d’or. Ces nouveaux composés sont porteurs d’un potentiel très prometteur.

This thesis proposes firstly an original method, called 2 in 1 method, for controlled, layer-by-layer, polyelectrolytes film buildup, based on the deposition of a sole polycation-polyanion complex. Detailed on the case of poly(ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT-PSS), the method was then extended with the same success to other complexes (branched poly(ethyleneimine)-poly(4 styrenesulfonate), poly(diallyldimethylammonium)-poly(4 styrenesulfonate) and poly(allylamonium)-poly(4 styrenesulfonate)).The 2 in 1 PEDOT PSS films are robust regarding thermal annealing and have an electronic conductivity independent of their thickness. This conductivity can be improved by using a composite containing gold nanoparticles Au Np PEDOT PSS. Superstructures alternating PEDOT PSS and composite depositions were also obtained.Film buildup is controlled not only on rigid substrates (glass, silicon wafer) but also on elastomeric substrates of the silicon type (polydimethylsiloxane PDMS). The treatment of PDMS by vacuum plasma enhanced chemical vapor deposition (PECVD) of EDOT allows subsequent deposition of 2 in 1 PEDOT-PSS films. Besides, gold sputter deposition on PDMS reaches stretchable conductors. Gold sputtered PDMS can further act as a substrate for 2 in 1 PEDOT-PSS films.Finally, new aqueous complexes, chemically synthesized from EDOT and a…

Advisors/Committee Members: Vallat, Marie-France (thesis director), Schaff, Pierre (thesis director), Nardin, Michel (thesis director).

Subjects/Keywords: Multicouches; Polyélectrolytes; Méthode 2-en-1; PEDOT-PSS; Électronique déformable; Polymérisation plasma EDOT; Polysaccharides; Biomatériaux; Multilayers; Polyelectrolytes; 2-in-1 method; PEDOT-PSS; Stretchable electronics; EDOT plasma polymerization; Polysaccharides; Biomaterials; 541

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Saint-Aubin, C. d. (2013). Conception de nouveaux matériaux conducteurs extensibles à base de multicouches de polyélectrolytes sur support silicone : Conception of new stretchable conducting materials based on polyelectrolyte multilayers on silicon substrate. (Doctoral Dissertation). Mulhouse. Retrieved from http://www.theses.fr/2013MULH8652

Chicago Manual of Style (16th Edition):

Saint-Aubin, Christine de. “Conception de nouveaux matériaux conducteurs extensibles à base de multicouches de polyélectrolytes sur support silicone : Conception of new stretchable conducting materials based on polyelectrolyte multilayers on silicon substrate.” 2013. Doctoral Dissertation, Mulhouse. Accessed June 18, 2019. http://www.theses.fr/2013MULH8652.

MLA Handbook (7th Edition):

Saint-Aubin, Christine de. “Conception de nouveaux matériaux conducteurs extensibles à base de multicouches de polyélectrolytes sur support silicone : Conception of new stretchable conducting materials based on polyelectrolyte multilayers on silicon substrate.” 2013. Web. 18 Jun 2019.

Vancouver:

Saint-Aubin Cd. Conception de nouveaux matériaux conducteurs extensibles à base de multicouches de polyélectrolytes sur support silicone : Conception of new stretchable conducting materials based on polyelectrolyte multilayers on silicon substrate. [Internet] [Doctoral dissertation]. Mulhouse; 2013. [cited 2019 Jun 18]. Available from: http://www.theses.fr/2013MULH8652.

Council of Science Editors:

Saint-Aubin Cd. Conception de nouveaux matériaux conducteurs extensibles à base de multicouches de polyélectrolytes sur support silicone : Conception of new stretchable conducting materials based on polyelectrolyte multilayers on silicon substrate. [Doctoral Dissertation]. Mulhouse; 2013. Available from: http://www.theses.fr/2013MULH8652

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