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Dissertations / Theses on the topic 'Surfactant system'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Cicciarelli, Bradley A. (Bradley Adam). "Dynamics in a photoresponsive surfactant system." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/39349.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 2007.<br>Includes bibliographical references.<br>The study of surface tension and other surface properties is motivated by the large number of industrially relevant processes involving interfaces, such as coating, detergency, printing, foams, and so forth. These surface properties become increasingly important as the length scale of the system is reduced (as in microfluidic devices). Recently, much research has been focused on developing surfactants which respond to a particular stimulus (such as temperature

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2

Gahlot, Luxmi. "Vagal innervation and surfactant system in fetal sheep." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0015/MQ55209.pdf.

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3

Reissig, Louisa. "Equilibrium and nonequilibrium behaviour of surfactant systems." Thesis, University of Edinburgh, 2010. http://hdl.handle.net/1842/4221.

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In binary systems, surfactant molecules can self-assemble into a large variety of structures depending on their chemical structure, concentration and temperature. The properties and stability of the phases, their coexistence regions and the formation of metastable structures is of great importance not only for fundamental understanding, but also for applications in many fields including industry and medicine. This thesis presents studies of the equilibrium and non-equilibrium behaviour of two widely used surfactant systems. The understanding of the equilibrium behaviour of an aqueous surfactan

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4

Rajatanavin, Pajaree, and pajaree@sympatico ca. "Solid-stabilised foams produced using a mixed surfactant system." Swinburne University of Technology, 2005. http://adt.lib.swin.edu.au./public/adt-VSWT20060504.153041.

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Studies involving solids-stabilised foams have been limited and few have focused on the benefits of complex systems such as those involving mixtures of more than one surfactant. Little is known about the effectiveness of using mixed surfactant systems as foam stabilisers at the bulk level. The purpose of this project was to gain further understanding and insight into foam stability, on a bulk scale, in the absence, and in the presence, of solid colloidal particles, and for systems involving single or mixed surfactants. Foams were produced using sodium dodecyl sulphate (SDS), dodecanoic ac

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5

Liaw, Marianne Su-Ling. "Shear-induced structures in a commercial surfactant-based system." Thesis, University of Cambridge, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.615697.

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6

Miller, Natalie J. "The evolution of a physiological system the pulmonary surfactant system in diving mammals /." Connect to this title online, 2005. http://hdl.handle.net/2440/37717.

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Pulmonary surfactant is a complex mixture of lipids and proteins that lowers surface tension, increases lung compliance, and prevents the adhesion of respiratory surfaces and pulmonary oedema. Pressure can have an enormous impact on respiratory function, by mechanically compressing tissues, increasing gas tension resulting in increased gas absorption and by increasing dissolved gas tensions during diving, resulting in the formation of bubbles in the blood and tissues. The lungs of diving mammals have a huge range of morphological adaptations to enable them to endure the extremely high pressure

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7

Johnston, Sonya D. "Development of the pulmonary surfactant system in non-mammalian amniotes /." Title page, contents and abstract only, 2001. http://web4.library.adelaide.edu.au/theses/09PH/09phj737.pdf.

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8

Alsaadi, Manal Mohamed. "Non-ionic surfactant vesicles as a delivery system for cisplatin." Thesis, University of Strathclyde, 2011. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=16931.

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Cisplatin is a leading anti-cancer drug used in the treatment of various cancers. However, its clinical use is limited by its undesirable toxic side effect profile and the potential of certain tumours to be or to develop resistance to cisplatin. Encapsulation of cisplatin within a vesicular structure such as non-ionic surfactant vesicles (NIVs) was developed to overcome these limitations. Characterisation studies showed that the size and negative surface charge of cisplatin NIVs could be exploited in enhancing their uptake by the mononuclear phagocytic system present in the lungs, liver and sp

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9

Kashapov, Ruslan R., Tatiana N. Pashirova, Sergey V. Kharlamov, et al. "Novel self-assembling system based on resorcinarene and cationic surfactant." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-138802.

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Mixed association of calix[4]resorcinarene with ethyl sulfonate groups on the lower rim and dimethylaminomethyl groups on the upper rim (CR) and cationic surfactant 4-aza-1-hexadecyl-azoniabicyclo[2.2.2]octane bromide (DABCO-16) is studied by methods of tensiometry, conductometry, potentiometry and NMR spectroscopy at fixed CR concentration and varied surfactant concentration. Beyond ca. 0.4 mM of DABCO-16, mixed aggregates enriched by CR are proved to be formed due to electrostatic forces, while beyond ca. 5 mM, aggregates enriched by surfactant occur due to the hydrophobic effect. Spectropho

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10

McKeown, Sharon Anne. "The structure and rheology of a commercial surfactant-based system." Thesis, University of Cambridge, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.621162.

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11

Schob, Stefan, Donald Lobsien, Benjamin Friedrich, et al. "The cerebral surfactant system and its alteration in hydrocephalic conditions." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-213883.

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Introduction: Pulmonary Surfactant reduces surface tension in the terminal airways thus facilitating breathing and contributes to host's innate immunity. Surfactant Proteins (SP) A, B, C and D were recently identified as inherent proteins of the CNS. Aim of the study was to investigate cerebrospinal fluid (CSF) SP levels in hydrocephalus patients compared to normal subjects. Patients and methods: CSF SP A-D levels were quantified using commercially available ELISA kits in 126 patients (0±84 years, mean 39 years). 60 patients without CNS pathologies served as a control group. Hydrocephalus pati

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12

Kashapov, Ruslan R., Tatiana N. Pashirova, Sergey V. Kharlamov, et al. "Novel self-assembling system based on resorcinarene and cationic surfactant." Royal Society of Chemistry, 2011. https://tud.qucosa.de/id/qucosa%3A27782.

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Mixed association of calix[4]resorcinarene with ethyl sulfonate groups on the lower rim and dimethylaminomethyl groups on the upper rim (CR) and cationic surfactant 4-aza-1-hexadecyl-azoniabicyclo[2.2.2]octane bromide (DABCO-16) is studied by methods of tensiometry, conductometry, potentiometry and NMR spectroscopy at fixed CR concentration and varied surfactant concentration. Beyond ca. 0.4 mM of DABCO-16, mixed aggregates enriched by CR are proved to be formed due to electrostatic forces, while beyond ca. 5 mM, aggregates enriched by surfactant occur due to the hydrophobic effect. Spectropho

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13

Bellamy, Joanna Kate. "Recovery of surfactant-induced friction reduction in a closed hot water system." Thesis, University of Ottawa (Canada), 2000. http://hdl.handle.net/10393/8794.

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In the 1980's the use of surfactants to decrease pumping energy requirements in district heating systems was explored in Europe. FRAs are particularly attractive for district energy systems because they have long pipe runs and the associated pumping costs can be a large component of total operating costs. In this research project, a series of obstructing devices were designed and tested for their ability to disrupt micelles and reverse the friction reducing effect in a 3/4 inch diameter stainless steel experimental test loop. Four simple obstructing geometries were investigated: a central obst

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14

Bellamy, Joanna. "Recovery of surfactant-induced friction reduction in a closed hot water system." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0018/MQ58443.pdf.

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15

Lee-Tuffnell, Clive Derek. "Phase behaviour and representation of an enhanced oil recovery model surfactant system." Thesis, University of Exeter, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.253563.

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16

Kazemi, Taskooh Alireza. "Transport of complex fluids in the human pulmonary airway system." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLX077/document.

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La Thérapie par Substitution de Surfactant (TSS), qui opère par instillation d’une solution de surfactant directement dans l’arbre bronchique, est un traitement essentiel chez les nouveau-nés souffrant de syndrome de détresse respiratoire (SDRN). Cette procédure s’est révélée remarquablement efficace chez les grands prématurés, contribuant à la division par cinq de leur mortalité depuis les années 1980. À l’inverse, son utilisation s’est avérée décevante chez l’adulte dans le traitement du syndrome de détresse respiratoire aigu (SDRA), se soldant par un échec après des premiers essais pourtant

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17

Vu, Trang. "Rheology control mechanisms for amino acid-based surfactant systems." University of Cincinnati / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1626456205661715.

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18

Codd, Jonathan Richard. "Torpor associated fluctuations in the pulmonary surfactant system in Gould's wattled bat Chalinolobus Gouldii /." Title page, contents and abstract only, 2001. http://web4.library.adelaide.edu.au/theses/09SM/09smc669.pdf.

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19

Kerr, Margaret Heather. "An investigation of the pulmonary surfactant system in children with severe respiratory syncytial virus infection." Thesis, University of Glasgow, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.265640.

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20

Han, Lu. "Synthesis and Characterization of Functionalized Silica Mesoporous Crystals Cationic Surfactant and Co-structure Directing Agent System /." Doctoral thesis, Stockholm : Department of Materials and Environmental Chemistry (MMK), Stockholm University, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-38398.

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21

Rausch, Felix [Verfasser], Ludger A. [Akademischer Betreuer] Wessjohann, and Harald [Akademischer Betreuer] Lanig. "3D modeling of the putative human surfactant proteins SP-G and SP-H and simulations in a pulmonary surfactant model system / Felix Rausch. Betreuer: Ludger A. Wessjohann ; Harald Lanig." Halle, Saale : Universitäts- und Landesbibliothek Sachsen-Anhalt, 2015. http://d-nb.info/107850511X/34.

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22

Müller, Bernd. "Auswirkungen inhalativer Belastungen von Ratten mit Stickstoffdioxid auf das Surfactant-System der Lunge : Beispiel eines oxidativen Umweltschadstoffs /." Karlsruhe : Kernforschungszentrum, 1993. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=005464293&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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23

Hatim, George. "Design of the surfactant-enhanced electrokinetic system for hydrocarbons removal from clayey soils in pilot scale conditions." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0008/MQ47820.pdf.

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24

Millichope, Allen John. "Application of a charge coupled device Raman microscope imaging system for quantitative analysis of aqueous surfactant phases." Thesis, Liverpool John Moores University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.327678.

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25

O'Toole, Stuart John. "The pulmonary surfactant system in congenital diaphragmatic hernia and the influence of fetal surgery on its development." Thesis, University of Newcastle Upon Tyne, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.312035.

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26

Nahak, Prasant. "Physicochemical studies on lipidic components with special reference to monolayer, bilayer,and solid lipid nanoparticle." Thesis, University of North Bengal, 2017. http://ir.nbu.ac.in/handle/123456789/3967.

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27

Lim, Boon-Leong. "Cloning and expression of a C1q-binding protein and two of the collections (Collectin-43 and lung surfactant protein D)." Thesis, University of Oxford, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239328.

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28

Silva, Liege Cristina Garcia da. "Parâmetros clínicos, hemogasométricos e radiográficos para avaliação respiratória de neonatos caninos nascidos em eutocia ou cesariana eletiva." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/10/10131/tde-18072008-144422/.

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Estima-se que a mortalidade neonatal canina nas primeiras semanas de vida seja de 30%, em razão de diversas causas, dentre elas falhas de assistência neonatal. Em Medicina Humana, protocolos de assistência cardio-respiratória ao recém-nascido estão bem estabelecidos e são utilizados de rotina. Porém, os cuidados direcionados aos neonatos debilitados em Medicina Veterinária são, em geral, empíricos e passíveis de causar traumas e contusões. Deste modo, objetivou-se comparar o padrão do aparelho respiratório ao nascimento e a evolução durante a primeira hora de vida em neonatos nascidos em eutoc

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29

Shreepathi, Subrahmanya. "Dodecylbenzenesulfonic Acid: A Surfactant and Dopant for the Synthesis of Processable Polyaniline and its Copolymers." Doctoral thesis, Universitätsbibliothek Chemnitz, 2006. http://nbn-resolving.de/urn:nbn:de:swb:ch1-200602029.

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Das Ziel der vorliegenden Arbeit ist die bessere Verarbeitung von Polyanilin (PANI), da dies bisher ein großer Nachteil unter leitfähigen Polymeren war. Dazu wird ein sperriges Tensid und Dotand, Dodecylbenzensulfonsäure (DBSA) verwendet. Zur Synthese der PANI kommen zwei verschiedene Methoden zur Anwendung, die in dieser Dissertation in zwei Kapiteln beschrieben werden. Im ersten Teil wurden in einem kleinen Reaktionsvolumen (250 mL) PANI-DBSA-Suspensionen synthetisiert, wobei mit einem binären Gemisch aus 2-Propanol und Wasser als Lösungsmittel gearbeitet wird um die Löslichkeit zu unterstüt

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30

Menzies, Jennifer Z. "An Evaluation of Biodegradation Rates and Pathways of High Volume Surfactants in the Sewer System." University of Cincinnati / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1439301189.

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31

Abozaid, Suhair Mohamed. "Studies on the interaction of surfactant protein SP-D with Inflenza A virus, Aspergillus fumigatus and dendritic cells." Thesis, Brunel University, 2016. http://bura.brunel.ac.uk/handle/2438/13595.

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Surfactant proteins, SP-A and SP-D, are collagen-containing calcium-dependent (C-type) lectins, called, collectins. Their primary structure has four regions: a cysteine-linked N- terminal region involved in multimerization, a collagen region composed of Gly-X-Y repeats, coiled-coil neck region, and the C-terminal carbohydrate recognition domains (CRD) or C-type lectin domain. SP-A looks like a bouquet, while SP-D is a cruciform- like structure, with four arms of equal length. SP-A and SP-D have been shown to act as innate immune molecules at pulmonary as well as extra-pulmonary sites by bindin

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32

Posa, Andreas [Verfasser], F. [Akademischer Betreuer] Paulsen, S. [Akademischer Betreuer] Knipping, and I. [Akademischer Betreuer] Bechmann. "Proteinkonzentrationen im humanen okulären Surfactant System und deren Einfluss auf das trockene Auge / Andreas Posa. Betreuer: F. Paulsen ; S. Knipping ; I. Bechmann." Halle, Saale : Universitäts- und Landesbibliothek Sachsen-Anhalt, 2013. http://d-nb.info/1033306657/34.

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33

Wang, Hui. "Interfacial and Solution Characterization of Rhamnolipid Biosurfactants and their Synthetic Analogues." Diss., The University of Arizona, 2011. http://hdl.handle.net/10150/217062.

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Rhamnolipid (RL) biosurfactants have been considered "green" alternatives to synthetic surfactants. Here, systematic studies of monorhamnolipids (mRLs) and their synthetic analogues are performed to characterize their interfacial and solution behaviors as surfactants. Chemical structure-surface activity relationships of rhamnolipids were probed using surface tension measurements on RLs and a series of their synthetic analogues designed by "truncation modification." Based on our study on RLs and the rationally-designed RL analogues, the key structural factor responsible for the excellent surfac

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34

Baalbaki, Nada H. "An In Vitro Method for Measuring the Dissolution and Release of Suspended Solids from Coacervates on the Skin Surface." University of Cincinnati / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1490353836623474.

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35

Schrader, Philipp [Verfasser], Sabine [Akademischer Betreuer] Enders, Bernhard [Akademischer Betreuer] Wolf, and Eckhard [Akademischer Betreuer] Flöter. "Experimental investigation of the complex liquid liquid equilibrium in the system pure/technical grade nonionic surfactant + water + oil / Philipp Schrader. Gutachter: Sabine Enders ; Bernhard Wolf ; Eckhard Flöter." Berlin : Technische Universität Berlin, 2014. http://d-nb.info/1065665725/34.

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36

Turner, Matthew S. "Dynamics of surfactant systems." Thesis, University of Cambridge, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386906.

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37

Agarwal, Vivek. "Microstructure studies in surfactant systems /." View online ; access limited to URI, 2004. http://wwwlib.umi.com.helin.uri.edu/dissertations/dlnow/3160026.

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38

Pilgrová, Tereza. "Příprava a charakterizace koloidů hyaluronanu s micelárními agregáty pro nanomedicínské aplikace." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2018. http://www.nusl.cz/ntk/nusl-371153.

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This thesis deals with the study of preparation and characterization of hyaluronan-micelle aggregates. The theoretical part deals with drug delivery systems, characterization of used materials and methods especially fluorescence spectroscopy, dynamic light scattering and turbidimetry. Methods of determination of measured data are summarized in the experimental section. The result section is divided into two subsections dedicated to different preparation methods of hyaluronan-surfactant complexes. Induced aggregates of hyaluronan with Septonex are characterized in terms of their origin and stab

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39

Nyame, Mendendy Boussambe Gildas. "Elaboration de composés oléophiles super amphiphiles biosourcés polymorphes rétenteurs et vecteurs d'eau dans les procédés de cure et bitumes." Phd thesis, Toulouse, INPT, 2015. http://oatao.univ-toulouse.fr/16496/1/NYAME_MENDENDY_BOUSSAMBE.pdf.

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Les milieux réactionnels issus de l’étude de la réactivité de deux types de polyols, le glycérol et le diglycérol par réaction d’estérification directe avec l’acide undécylénique, catalysée par l’acide dodécylbenzène sulfonique (ADBS). Les résultats montrent que les ystèmes polyol/acide undécylénique donnent une émulsion eau dans huile (E/H). L’ajout de l’ADBS et de l’eau formée in-situ aux systèmes polyol/acide undécylénique ont permis de réduire la taille des gouttelettes de 50 μm à moins de 1 μm et d’obtenir un système organisé (micro-réacteur). L’augmentation de la température contribue à

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40

Severson, Katie. "Rheology of drag reducing surfactant systems." Connect to this title online, 2005. http://hdl.handle.net/1811/303.

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Thesis (Honors)--Ohio State University, 2005.<br>Title from first page of PDF file. Document formattted into pages: contains vii, 81 p.; also includes graphics. Includes bibliographical references (p. 81). Available online via Ohio State University's Knowledge Bank.

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41

Williams-Daryn, Shira. "Characterisation of clay/surfactant/oil systems." Thesis, University of Oxford, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.249478.

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42

Bell, Christopher G. "Mathematical modelling of Polymer/ surfactant systems." Thesis, University of Oxford, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.489411.

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Polymer/surfactant systems are increasingly being used in a wide range of applications. Weakly-interacting systems comprise ionic surfactants and neutral polymers, while strongly-interacting systems contain ionic surfactants and oppositely charged ionic polymers. The complex nature of interactions in the mixtures leads to interesting and surprising surface tension profiles as the concentrations of polymer and surfactant are varied.

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43

Mahmood, Zahid. "Characterisation of surfactant mesophases in mult-phase systems : high sensitivity, surfactant specific electrodes." Thesis, University of Salford, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.494543.

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The project involves research being carried out on surfactants and the multi-phase systems that they produce. The aim is to understand the mesomorphous behaviour exhibited by different multi-phase systems when conditions (time, temperature, shear tension, concentration of surfactants) are altered. The characterisation of surfactant mesophases in multi-phase systems can be observed by methods involving: polarising optical microscopy, X-ray diffraction and use of surfactant-specific electrodes to measure conductivity (mV). Investigating ternary systems composed of surfactant: co-surfactant compo

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44

Bardhan, Soumik. "Physicochemical studies on some self organized assemblies of single and mixed surfactant systems." Thesis, University of North Bengal, 2015. http://hdl.handle.net/123456789/1855.

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45

Perrins, N. M. "Interactions in surfactant stabilised colloidal micro-systems." Thesis, University of Kent, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.353999.

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46

Ash, Philip Andrew. "Surface freezing in surfactant/alkane/water systems." Thesis, Durham University, 2011. http://etheses.dur.ac.uk/843/.

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Surface freezing transitions in mixed monolayers of a homologous series of cationic surfactants, the alkyltrimethyl ammonium bromides (CnTAB where n = 12, 14, 16, 18), as well as a range of non-ionic, zwitterionic and biological surfactants, have been investigated ellipsometrically with a range of n-alkanes (Cm where m = 12 – 20, 28). Two distinct solid phases are observed depending upon the chain length difference between surfactant and n-alkane. Type I solid phases consist of a surface frozen mixed monolayer and are formed when this difference is small. Type II solid phases are bilayer struc

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47

Raven, C. I. "Nuclear magnetic resonance studies of surfactant systems." Thesis, University of Nottingham, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235350.

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48

Johnson, Graham D. W. "Interfacial structure and dynamics of surfactant systems." Thesis, University of Reading, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333452.

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49

Dimitrijevic, Dejana. "Effects of surfactant systems on metformin transport." Thesis, University College London (University of London), 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.300542.

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50

Bouchal, Roza. "Surfactants, Ionic liquids and Ionosilicas : functional ionic systems for supramolecular chemistry and elaboration of materials by design (ion exchange and vectorization)." Thesis, Montpellier, 2016. http://www.theses.fr/2016MONTT203/document.

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Cette thèse s’inscrit dans le cadre de synthèses de matériaux innovants contenant des entités cationiques que sont le guanidinium et l’ammonium. Ces entités cationiques confèrent des propriétés intéressantes et fonctionnelles pour chacun des systèmes ioniques suivants : tensio-actifs, liquides ioniques et ionosilices. A cet effet, nous avons procédé à l’étude de deux familles de composés : les sels de guanidiniums et les ionosilices. Pour les sels de guanidiniums, nous avons étudié la formation et les propriétés d’auto-assemblage de tensio-actifs en utilisant différentes techniques de mesures

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