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Dissertations / Theses on the topic 'Superhydrophobic materials'

Author: Grafiati

Published: 4 June 2021

Last updated: 29 May 2022

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1

Taleb, Sabri. "Matériaux superhydrophobes réversibles." Thesis, Nice, 2015. http://www.theses.fr/2015NICE4140.

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Une surface superhydrophobe est caractérisée par un angle de contact apparent supérieur à 150° et un angle de contact dynamique faible. Ce phénomène, découvert dans la nature, suscite une grande attention de la part de la communauté scientifique. En effet, le contrôle de la mouillabilité d’une surface solide est important dans de nombreuses applications. De nombreuses techniques d’élaboration de surfaces superhydrophobes ont été décrites, dont la polymérisation par voie électrochimique qui permet d’obtenir des surfaces avec une mouillabilité variée, de façon contrôlée et en utilisant des polym

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2

Taiwo, Adetoun. "SMART SUPERHYDROPHOBIC MATERIALS." VCU Scholars Compass, 2013. http://scholarscompass.vcu.edu/etd/3209.

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Superhydrophobicity refers to surfaces with extremely large water droplet contact angles (usually greater than 150°). This phenomenon requires a hydrophobic material with micro or nano-scale roughness. Superhydrophobic surfaces exist in nature (e.g. the lotus leaf) and can be produced synthetically. This project focuses on the development and characterization of superhydrophobic materials with tunable wettability (i.e. smart superhydrophobic materials). In this study, surfaces were prepared by electrospinning thin, aligned polystyrene fibers onto a piezoelectric unimorph substrate. Results sho

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3

Yohe, Stefan Thomas. "Superhydrophobic materials for drug delivery." Thesis, Boston University, 2013. https://hdl.handle.net/2144/12898.

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Thesis (Ph.D.)--Boston University PLEASE NOTE: Boston University Libraries did not receive an Authorization To Manage form for this thesis or dissertation. It is therefore not openly accessible, though it may be available by request. If you are the author or principal advisor of this work and would like to request open access for it, please contact us at open-help@bu.edu. Thank you.<br>Superhydrophobicity is a property of material surfaces reflecting the ability to maintain air at the solid-liquid interface when in contact with water. These surfaces have characteristically high apparent conta

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Tunali, Feyza. "Synthesis of different photocatalytic or superhydrophobic materials for environmental applications." Thesis, University College London (University of London), 2018. http://discovery.ucl.ac.uk/10044844/.

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This thesis details the development of different novel systems for environmental applications. Firstly, the synthesis of TiO2 photocatalyst thin films was achieved on glass slides, glass frit and glass wool by immersed into a Ti-containing sol followed by annealing processes to obtain potent photo-active surfaces. Secondly, Silicalite-1 (S1) coatings were prepared on the glass slide and glass wool by hydrothermal synthesis and subsequently immersed into a Ti-containing sol to create a silica fibre core surrounded by concentric layers of S1 and TiO2 to increase their specific surface area and r

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5

Sethi, Sunny. "Carbon Nanotube Based Functional Superhydrophobic Coatings." University of Akron / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=akron1271346171.

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6

Mostovyi, U. R., Yu V. Rudyk, B. I. Turko, and V. B. Kapustianyk. "Superhydrophobic/superhydrophilic switching on the surface of ZnO microstructures caused by UV irradiation and argon ion etching process." Thesis, Sumy State University, 2016. http://essuir.sumdu.edu.ua/handle/123456789/45813.

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The superhydrophobic materials can be used in manufacturing of the devices and things with the self-cleaning properties (such as solar panels, textiles and building materials, such as glass, tile etc.), coatings with a low friction (such as vehicles), anti-corrosion, anti-icing and antisticking coatings, lab-on-chip devices, drug delivery etc.

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7

Hubert, Julie. "Hydrophobic and superhydrophobic surfaces by means of atmospheric plasmas: synthesis and texturization of fluorinated materials." Doctoral thesis, Universite Libre de Bruxelles, 2014. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209255.

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In this thesis, we focused on the understanding of the synthesis and texturization processes of hydrophobic and (super)hydrophobic fluorinated surfaces by atmospheric plasmas.<p><p>First, we focused on the surface modifications of a model surface, the polytetrafluoroethylene (PTFE), by the post-discharge of a radio-frequency plasma torch. The post-discharge used for the surface treatment was characterized by optical emission spectroscopy (OES) and mass spectrometry (MS) as a function of the gap (torch-sample distance), and the helium and oxygen flow rates. Mechanisms explaining the production

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8

Wolfs, Mélanie. "Hydrocarbon superhydrophobic polymers from electrochemical polymerization: an alternative to fluorine?" Phd thesis, Université Nice Sophia Antipolis, 2013. http://tel.archives-ouvertes.fr/tel-00933342.

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Le contrôle de la mouillabilité de surface est important pour de nombreuses applications pratiques. Cette propriété, découland de la combinaison d'un matériau à faible énergie de surface avec une structuration de surface, est communément déterminé par mesure d'un angle de contact à l'eau sur la surface. Des surfaces avec un angle de contact à l'eau (θeau) supérieur à 150° sont appelé surfaces superhydrophobes. De telles surfaces sont très intéressantes car potentiellement pour des applications dans l'auto-nettoyage, anti-contamination, dispositifs bio-médicaux, peinture ou en aéronautique, par

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9

Shestakov, A. F. "Telomeres of Tetrafluoroethylene - Advanced Materials to Create Superhydrophobic Coatings and Optical Fiber with Low Attenuation Coefficient." Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35479.

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The paper describes formation of telomers of tetrafluoroethylene (TFE), which are very interesting in-termediate materials of different purposes, by radiation polymerization. In some cases there are formed long chained oligomers suitable for creation of superhydrophobic coatings. In such systems formation of gels is observed under low TFE content. Quantum chemical analysis allows to reveal the factors that are responsible for this phenomenon. In the case of solvents with appropriate cyclic structure, short chain oli-gomers, which have low C-H bonds content, are raw materials for fluoropolymers

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10

Chanda, Jagannath. "Design of multifunctional materials with controlled wetting and adhesion properties." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-200803.

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Ice accretion on various surfaces can cause destructive effect of our lives, from cars, aircrafts, to infrastructure, power line, cooling and transportation systems. There are plenty of methods to overcome the icing problems including electrical, thermal and mechanical process to remove already accumulated ice on the surfaces and to reduce the risk of further operation. But all these process required substantial amount of energy and high cost of operation. To save the global energy and to improvement the safety issue in many infrastructure and transportation systems we have to introduce some

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11

Diwan, Anubhav. "Novel Sputtered Stationary Phases for Solid Phase Microextraction, and Other Coatings and Materials for Surface Applications." BYU ScholarsArchive, 2016. https://scholarsarchive.byu.edu/etd/6204.

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The primary focus of my work has been to prepare new solid adsorbents for solid phase microextraction (SPME) via sputtering of silicon. The orientation of the silica substrates/fibers and the sputtering pressure induced the formation of porous and columnar structures. Sputtering was performed for different times to yield fibers with different thicknesses. Piranha treatment of the surface increased the concentration of silanol groups, which underwent condensation with vapor deposited octadecyldimethylmonomethoxy silane to incorporate octadecyl chains onto the fiber surfaces. Silanized, sputtere

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12

Almilaji, Karam N. "Fabricating Superhydrophobic and Superoleophobic Surfaces with Multiscale Roughness Using Airbrush and Electrospray." VCU Scholars Compass, 2016. http://scholarscompass.vcu.edu/etd/4460.

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Examples of superhydrophobic surfaces found in nature such as self-cleaning property of lotus leaf and walking on water ability of water strider have led to an extensive investigation in this area over the past few decades. When a water droplet rests on a textured surface, it may either form a liquid-solid-vapor composite interface by which the liquid droplet partially sits on air pockets or it may wet the surface in which the water replaces the trapped air depending on the surface roughness and the surface chemistry. Super water repellent surfaces have numerous applications in our daily life

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13

Volbers, Blaire M. "VAPOR DEPOSITION METHOD FOR SURFACE MODIFICATIONS OF COTTON FABRIC IN WATERPROOFING APPLICATIONS." Case Western Reserve University School of Graduate Studies / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=case1607974865396215.

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14

Han, Daewoo. "Core-Sheath Polymer Fibers by Coaxial Electrospinning." University of Cincinnati / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1288975118.

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15

Silva, Italo Guimaraes Medeiros da. "POLYMERIC MATERIALS FOR ENVIRONMENTAL APPLICATIONS IN THE OIL AND GAS INDUSTRY." Case Western Reserve University School of Graduate Studies / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=case160709776258431.

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16

Yin, Quanyi. "Thiol-para-fluoro modified PPFS as building blocks for the design of silica-based nanocomposite and layer by layer self-assembled thin films." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSEI025/document.

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Ce travail de thèse décrit la préparation de deux types de films de polymères : i) des films nanocomposites à base de silice pyrogénée aux propriétés superhydrophobes et ii) des films LbL auto-assemblés, incluant tous deux des dérivés de poly(2,3,4,5,6-pentaflurostyrene) (PPFS), utilisés comme briques élémentaires. La stratégie utilisée ici consiste à exploiter les nombreux avantages que présente la réaction de substitution du fluor en position para du PPFS avec un thiol, pour générer de nouveaux dérivés aux propriétés ajustables. Ainsi, le premier volet de la thèse a consisté à introduire des

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17

Anderson, David Milton. "Theoretical and experimental investigation of condensation on amphiphilic nanostructured surfaces." Thesis, Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/47584.

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Condensation of water vapor is an everyday phenomenon which plays an important role in power generation schemes, desalination applications and high-heat flux cooling of power electronic devices. Continuous dropwise condensation is a desirable mode of condensation in which small, highly-spherical droplets regularly form and shed off the surface before a thick liquid is formed, thereby minimizing the thermal resistance to heat transfer across the condensate layer. While difficult to induce and sustain, dropwise condensation has been shown to achieve heat and mass transfer coefficients over an or

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18

Fergusson, Christian. "Hydrophobicity of Low Temperature Vibrating Surfaces." VCU Scholars Compass, 2018. https://scholarscompass.vcu.edu/etd/5589.

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This study proposes a method to enhance the anti-icing capabilities of superhydrophobic surfaces by utilizing vibration to further reduce contact time of an impacting droplet in addition to keeping the droplet in the Cassie-Baxter regime, where surface adhesion is lower than the opposing Wenzel regime. We tested this with two methods: by investigating the effects of vibration normal to the plane of a superhydrophobic surface being impacted by water droplets in a room temperature environment, with the surface horizontal in a room temperature environment and tiled in a subzero degree environment

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19

Abolghasemibizaki, Mehran. "Liquid Interaction with Non-wettable Surfaces Structured with Macroscopic Ridges." VCU Scholars Compass, 2018. https://scholarscompass.vcu.edu/etd/5381.

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Self-cleaning, anti-corrosion, anti-icing, dropwise-condensation, and drag-reduction are some applications in which superhydrophobic surfaces are implemented. To date, all the studies associated with superhydrophobic surfaces have been dedicated to understanding the liquid interaction with surfaces that are macroscopically smooth. The current study investigates the solid-liquid interaction of such surfaces which are fully decorated with macroscopic ridges (ribbed surfaces). In particular, the drop motion and impact on our newly designed non-wettable ribbed surface have been investigated in thi

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20

de, Leon Al Caimol. "Development, Fabrication, and Application of Hierarchically-Structured Polymer Systems." Case Western Reserve University School of Graduate Studies / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=case1448375702.

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21

Mortier, Claudio. "Conception de surfaces bio-inspirées à mouillabilité contrôlée à partir de polymères conducteurs." Thesis, Université Côte d'Azur (ComUE), 2017. http://www.theses.fr/2017AZUR4110/document.

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Le contrôle de la mouillabilité de surface est un enjeu majeur pour le développement de matériaux innovants liés aux nano, bio et smart technologies. La mouillabilité est fonction de deux paramètres majeurs : l’énergie de surface du matériau et sa morphologie. La combinaison de ces deux paramètres est à la base de phénomènes tels que la super/parahydrophobie ou la superoléophobie. Ces capacités extrêmes à repousser les liquides avec soit une forte ou faible adhésion sont des propriétés de surface très intéressantes pour de multiples applications industrielles. La présente thèse propose l’étude

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22

Knausgård, Kjetil. "Superhydrophobic Anti-Ice Nanocoatings." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for konstruksjonsteknikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-19403.

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Atmospheric icing from supercooled droplets in the atmosphere can have catastrophic consequences for a number of man-made structures in regions with cold climate and at high altitude, resulting in accidents with both socioeconomic losses and loss of human lives. To mitigate the icing problem, active de-icing involving chemical, thermal and mechanical techniques have been developed to remove ice that has already accumulated. These techniques are sub-optimal, however, as they are plagued with problems such as high energy consumption, hazard to the environment, high economic costs, and need for f

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23

Jia, Jiaqi, and Michael Thieme. "Vergleichende Untersuchungen zur Präparation superhydrophober Aluminium-Oberflächen und ihrer Charakterisierung." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-105311.

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Abstract der Posterpräsentation: Das bekannteste superhydrophobe Phänomen in der Natur ist das Blatt der Lotospflanze. Dieses Eigenschaftsprofil, das gemeinsam mit einer so genannten Selbstreinigungsfähigkeit auftritt, ist nicht primär biologischer, sondern physikalischchemischer Natur, auf dem Zusammenwirken von Mikrorauheit und Oberflächenchemie beruhend. Es ist seit Mitte der 1990er Jahre auf verschiedene Materialoberflächen übertragen worden (Bionik) und ist für Wissenschaft und Technik von großem theoretischen wie praktischen Interesse. Superhydrophobe Oberflächen haben Kontaktwinkel >15

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Stark, Alyssa Yeager. "The Effect of Water on the Gecko Adhesive System." University of Akron / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1405334677.

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Wu, Junliang. "Fremdschichtverhalten nanostrukturierter superhydrophober Isolierstoffoberflächen unter simultanen elektrischen und klimatischen Beanspruchungen." Aachen Mainz, 2008. http://d-nb.info/994130236/04.

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Klittich, Mena R. "Surface Interactions with Hierarchical Nanostructures: From Gecko Adhesion to Thermal Behavior." University of Akron / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1499440265902425.

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27

Offranc, Piret Gaëlle. "Nanofils de silicium pour analyse sensible de biomolécules par spectrométrie de masse et pour l'adressage fluidique de cellules en vue des applications laboratoires sur puce et biopuces." Phd thesis, Université des Sciences et Technologie de Lille - Lille I, 2010. http://tel.archives-ouvertes.fr/tel-00491178.

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Ce travail porte sur la fabrication d'un support inorganique de nanofils de silicium dédié à la détection sensible de biomolécules par désorption/ionisation laser (LDI) en spectrométrie de masse (MS). Cette technique, contrairement à l'analyse LDI assistée par matrice (MALDI), permet de s'affranchir des ions parasites de la matrice organique qui interfèrent avec les molécules de masses inférieures à 700 Da. La littérature fait état de la difficulté à déterminer les paramètres liés à la performance de la technique : nous avons varié la morphologie, la composition, la chimie de surface des nanof

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Victor, Jared J. "Biology Inspired Nano-materials: Superhydrophobic Surfaces." Thesis, 2012. http://hdl.handle.net/1807/34953.

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In this research, a low-cost template-based process has been developed to structure the surfaces of polymeric materials rendering them superhydrophobic. This biology-inspired approach was developed using results from the first part of this thesis: the first known detailed study of superhydrophobic aspen leaf surfaces. Aspen leaves, similar to lotus leaves, possess a dual-scale hierarchical surface structure consisting of micro-scale papillae covered by nano-scale wax crystals, and this surface structure was used as a blueprint in the structuring of templates. These distinctive surface featu

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Falde, Eric John. "Detection and drug delivery from superhydrophobic materials." Thesis, 2016. https://hdl.handle.net/2144/14629.

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The wetting of a rough material is controlled by surface chemistry and morphology, the liquid phase, solutes, and surfactants that affect the surface tension with the gas phase, and environmental conditions such as temperature and pressure. Materials with high (>150˚) apparent contact angles are known as superhydrophobic and are very resistant to wetting. However, in complex biological mixtures eventually protein adsorbs, fouling the surface and facilitating wetting on time scales from seconds to months. The work here uses the partially-wetted (Cassie-Baxter) to fully-wetted (Wenzel) state tr

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Cheng, Chiao-Yu, and 鄭喬譽. "Preparation and Properties of UV-Curable Biomimetic superhydrophobic Graphene Nanocomposite Material Materials." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/34018938180745673653.

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碩士<br>中原大學<br>化學研究所<br>101<br>In this research, successfully provisioned UV-curable biomimetic super-hydrophobic acrylic / graphenenano-composite coatings.Then to study structural identification and analysis of physical properties, and electrochemical corrosion characteristics. This research is divided into twoparts: The first part is UV-curing PMMA / graphenenano-composite material.Thephotoinitiator-containing methyl methacrylate (acrylic) was added the three ratios of the acid-modified graphite.Indeeddispersed,thenuseUV-reactionsuccessfullypreparedmethyl methacrylate /graphene nano-composite

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Huang, Wei-Chieh, and 黃偉傑. "Synthesis,Characterization and Property Studies of Polyaniline/Superhydrophobic MOF Composite Material and Superhydrophobic Discotic Liquid Crystal Materials for Corrosion Protection Applications." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/nucx9s.

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碩士<br>中原大學<br>化學研究所<br>106<br>This dissertation mainly focused on two research parts：（1）preparation and characterization of composite materials containing polyaniline/super-hydrophobic MOFs and applied in anticorrosive coatings；（2）Synthesis, characterization and property studied of super-hydrophobic discotic liquid crystal materials. For the first part of dissertation, polyaniline（PANI）was synthesized by oxidative polymerization of aniline monomers with ammonium persulfate as oxidant. Moreover, the PANI/MOFs composites were prepared by performing the oxidative polymerization of aniline monome

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Chen, Hsuan-Yu, and 陳宣佑. "Preparation of superhydrophobic carbon nanotube/polymer composite materials by microwave irradition." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/03922267590867693900.

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碩士<br>義守大學<br>材料科學與工程學系碩士班<br>99<br>This paper presents a simple casting process designed to create a stable superhydrophobic surface from carbon nanotube (CNT)/polybenzoxazine nanocomposites. The CNT/benzoxazine nanocomposites were prepared by deposition methods. Then above nanocomposites were cured through oven or microwave heating to form superhydrophobic CNT/polybenzoxazine films. This method possesses the advantages of being both simple and inexpensive as well as utilizing non-fluorine-containing compounds. We found that superhydrophobic films prepared by different curing methods both pos

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Wei-YuChen and 陳威宇. "Oil-water separation methods based on materials with superhydrophobic/superoleophilic properties." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/cv4emg.

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碩士<br>國立成功大學<br>化學工程學系<br>107<br>Different from traditional methods, oil-water separation based on the materials with special wettability is strongly advocated. In this work, polyester fabric and melamine sponge were used as the substrates for surface modifications with the aims to separate stratified and emulsified, respectively, oil-water mixtures. Hydrophobic/oleophilic surface properties were achieved by dipping the substrates in three kinds of solutions including: PVDF-HFP/FAS-17, PVDF-HFP/AS, and PVDF-HFP/HM-SiO2 mixtures with various ratios. Static and sliding contact angles were measur

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Huang, Shih-Chieh, and 黃世杰. "A Study of the Spray Coating Fluoropolymer Materials for Superhydrophobic and Anti-smudge Applications." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/3gs98y.

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碩士<br>國立中興大學<br>化學工程學系所<br>101<br>Coating anti-smudge film on the touch panel has become an important issue in the touch panel usages. Anti-smudge material is coated on the substrate surface by a layer of low surface energy material to create the feature of hydrophobic and oleophobic, in order to reach anti-smudge, easy to clean and smooth to touch for a better touch panel operation. This research is basis on low cost spray coating method to produce hydrophobic anti-smudge film, and explore the different coating solution concentrations and various temperature conditions in the influence of hyd

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Lu, Hsin-I., and 呂欣怡. "Advanced Anticorrosion Coating Materials Prepared from Biomimetic Superhydrophobic Electroactive Polyimide and Electroactive Polyimide / Graphene Composites." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/50654525293752240782.

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碩士<br>中原大學<br>奈米科技碩士學位學程<br>101<br>In this research, electroactive polyimide (EPI) with amino-capped aniline trimer (ACAT) and 4ʹ-(4,4ʹ-isopropylidene-diphenoxy)bis(phthalic anhydride) (BSAA) as monomers, were prepared by thermal imidization. This study as this electroactive polymer is divided into two parts: In the first part, nanocasting technique was used to obtain a biomimetic superhydrophobic electroactive polyimide (SEPI) surface structure from a natural Xanthosoma sagittifolium leaf. The superhydrophobic electroactive material could be used as advanced coatings that protect metals again

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Tranquada, George Christopher. "Evolution and Environmental Degradation of Superhydrophobic Aspen and Black Locust Leaf Surfaces." Thesis, 2013. http://hdl.handle.net/1807/35697.

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The current study is focused on the characterization of four natural leaf species (quaking, bigtooth and columnar european aspen as well as black locust) possessing a unique dual-scale cuticle structure composed of micro- and nano-scale asperities, which are able to effectively resist wetting (superhydrophobic), characteristic of The Lotus Effect. Scanning Electron Microscopy (SEM) was used to track the growth and evolution of their distinctive nano-scale epicuticular wax (ECW) morphologies over one full growing season. In addition, the stability of their superhydrophobic property was tested i

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Chang, Chi-Hao, and 張繼豪. "Novel Advanced Anticorrosion Coating Materials Prepared from Biomimicked Superhydrophobic Polymers and Polyaniline/Edge-functionalized Graphene Composites." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/9g6fry.

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碩士<br>中原大學<br>化學研究所<br>99<br>Novel advanced superhydrophobic conducting and electroactive polymers have been succefully prepared from poly(2-fluoroaniline)/silica and an easy approach (nanocasting and/or biomimicking method), respectively. The superhydrophobic conducting polymer exhibited good anticorroision property based on a series of electrochemical corrosion measurements performed under saline conditions. It is easy and faithful to prepare superhydrophobic electroactive epoxy (SEE) via biomimicking method. The most important thing is that SEEs show superiorcorroision protection in not on

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Chou, Peng-Yi, and 周朋毅. "A Study on Organic/Inorganic Graphene Nanohybrid Materials and Their Applications in Manipulating Superhydrophobic Surface and Dye-Sensitized Solar Cells." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/27522h.

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碩士<br>國立臺灣科技大學<br>材料科學與工程系<br>104<br>Nano-manipulation is considered to be very important foundation research in nanotechnology. With the development of technology, the products have become the trend of miniaturization of materials that size from microns to nanometers. Therefore, the dispersion techniques urgently need to promote in order to approach the current demand. In this thesis, there are two parts describing the polymeric dispersants to achieve the nanohybrids of graphene platelets/-particle/-tubes nanomaterials or complexes will be prepared via the geometric shape in-homogeneity facto

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Chen, Liang-Ting, and 陳亮廷. "Fabrication and Application of Superhydrophobic Porous Material." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/51910087823007348506.

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碩士<br>義守大學<br>材料科學與工程學系<br>104<br>In this paper, we present a facial method for the fabrication of a superhydrophobic and superoleophilic melamine sponge. We anchored the hydrophobic polydimethylsiloxane (PDMS) coatings onto the sponge to change its wettability from hydrophilic to superhydrophobic. The as-prepared superhydrophobic sponge absorbed a broad variety of oils and organic solvents with high selectivity. Because of its durable superhydrophobicity, this sponge could be used in conjunction with a vacuum system for the continuous absorption and removal of oil pollutants from water surfac

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Weng, Wei-Hsiang, and 翁維祥. "Organic/Inorganic Nanocomposite and superhydrophobic Material Synthesized via Sol-Gel Process." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/20378539890755745211.

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博士<br>國立中央大學<br>化學工程與材料工程研究所<br>93<br>In this research, sol-gel process was utilized to fabricate organic/inorganic nano-composite material and superhydrophobic film. Organic/Inorganic composite material included two separate parts, one was Epoxy/SiO2 hybrid material and the other one was PMMA/SiO2 composite sphere. The fabrication of superhydrophobic film also discussed with hydrophobic and superhydrophobic film individually. Sol-gel process was utilized to synthesize epoxy-silica hybrid materials in nanoscale in recent years. The purpose of this part is to fabricate hybrid material in na

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Li, Chang-Yuang, and 李昌謜. "A Novel Low Surface Free Energy Material Polybenzoxazine Characterization and Applications for Superhydrophobic and Smart Surface Material." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/73087615410765839159.

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碩士<br>國立交通大學<br>應用化學系所<br>97<br>In literature, we learned that most researchers add fluorinated functional groups to a given polymer to reduce its surface energy. The change of the surface energy of the polymer is due to the intermolecular and intramolecular force between polymers. Nevertheless, only few studies are related to this research area. Recently, we found that polybenzoxazine has extreme low surface energy which has significant influence on the chemical and physical properties of a polymer. Therefore, studying polybenzoxazine will give us better understanding of the low surface energ

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Jardim, Maria Raquel de Vasconcelos Barros. "Development of superhydrophobic coatings for textile and glass surfaces." Master's thesis, 2018. http://hdl.handle.net/10400.13/2222.

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Superhydrophobic surfaces have been widely explored by the scientific community and commercial market due to their remarkable properties as these surfaces are expected to repel water and show self-cleaning properties. These surfaces induce the beading of water drops, repelling them and dragging the accumulated dirt on the surface with them. This kind of surfaces has a wide range of applications. The present study is the result of a partnership between a private company, Extermínio, and the R&D centre, CQM (a National Research Laboratory). The goal of this partnership was the development of

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Amaral, Nicole Louise Lângaro. "Bioinspired degradable substrates with extreme wettability properties: in vivo study of standard and superhydrophobic poly(L-lactic acid) films." Master's thesis, 2017. http://hdl.handle.net/10348/8266.

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Dissertação de Mestrado Integrado em Medicina Veterinária<br>Quando implantados in vivo, os biomateriais estimulam respostas inflamatórias e a sua molhabilidade da superfície pode ter grande influência sobre este aspecto. O poli(L-ácido láctico) (PLLA) é amplamente utilizado para dispositivos médicos com raros casos de complicações. Porém, o impacto dos valores extremos de molhabilidade da superfície no comportamento das células não está completamente elucidado. Avaliamos a resposta inflamatória in vivo do PLLA com diferentes valores de molhabilidade após implantação subcutânea em ratos. Os ma

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Wang, Chih-Feng, and 王志逢. "The Study of A New Class of Low Surface Free Energy Material and Its Applications for Nanoimprint Lithography and Superhydrophobic Surfaces." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/05296196136111682726.

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博士<br>國立交通大學<br>應用化學系所<br>94<br>The physical and chemical properties are both important in the polymer researches. We can enhance many properties of polymers by chemical methods (i.e. variation of the functional groups). By doing detailed studies of physical properties of polymers , we can discover numerous applications of them. In this study, we focus on three major subjects which based on the polybenzoxazines: 1. Low surface free energy materials based on polybenzoxazines We discovered that polybenzoxazines can possess surface free energies even lower than that of pure poly(tetrafluoroethyl

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