Relevant bibliographies by topics / Hydrophobic silica nanoparticles

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Hydrophobic silica nanoparticles'

Author: Grafiati
Published: 4 June 2021
Last updated: 16 February 2022

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Journal articles on the topic "Hydrophobic silica nanoparticles"

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Ellateif, Tayseir M. Abd, Saikat Mitra, T. Murugesan, and Khairun Azizi Azizli. "Preparation and Characterization of Hydrophobic Silica Zirconium Nanoparticles." Applied Mechanics and Materials 625 (September 2014): 503–8. http://dx.doi.org/10.4028/www.scientific.net/amm.625.503.

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Hydrophobic silica nanoparticles were synthesized by silica sols modified with different percentage of zirconium sol using liquid modification. The hydrophobicity test demonstrated that silica zirconium nanoparticles are more hydrophobic as they showed 1% to 5% weight gain compared to 8% for pure silica nanoparticles. The synthesized silica nanoparticles were characterized using different techniques to investigate the effect of zirconium modification on silica nanoparticles characteristics. Structure and composition of unmodified silica nanoparticles and modified one were studied using FTIR; t
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Metwally, Sameha A., Mohamed A. A. Abd-Elaziz Abd-Elaziz, Mohamed A. A. Abd-Elaziz Abd-Elaziz, Samir I. El- Sherif, and Sayeda S. Ahmed. "Effect of silver and silica nanoparticles on the larvae of pink stem borer Sesamia cretica Lederer, 1857 (Lepidoptera: Noctuidae) and maize plants Zea mays Linneaus, 1753." Polish Journal of Entomology 90, no. 2 - Ahead of print (2021): 86–102. http://dx.doi.org/10.5604/01.3001.0014.9174.

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This study was aimed to evaluate the toxicological and biological effects of three nanoparticles (silver, hydrophilic and hydrophobic silica) at four concentrations (100, 200, 400 and 800 ppm) against 1st instar larvae of Sesamia cretica Lederer, 1857 and its effects on some maize characters. Each concentration and control was repeated 4 times (10 larvae/replicate). Larvae were fed on treated stem maize and mortality rate was recorded. After treatment with LC50 values, the survival larvae were collected and the larval duration, pupal duration, pupal weight, pupation percentage and adult longev
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Dai, Caili, Shilu Wang, Yuyang Li, et al. "The first study of surface modified silica nanoparticles in pressure-decreasing application." RSC Advances 5, no. 76 (2015): 61838–45. http://dx.doi.org/10.1039/c5ra09883a.

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Kanehara, Masayuki, Yuka Watanabe, and Toshiharu Teranishi. "Thermally Stable Silica-Coated Hydrophobic Gold Nanoparticles." Journal of Nanoscience and Nanotechnology 9, no. 1 (2009): 673–75. http://dx.doi.org/10.1166/jnn.2009.j071.

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Pilic, Branka, Tanja Radusin, Ivan Ristic, et al. "Hydrophobic silica nanoparticles as reinforcing filler for poly (lactic acid) polymer matrix." Chemical Industry 70, no. 1 (2016): 73–80. http://dx.doi.org/10.2298/hemind150107015p.

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Properties of poly (lactic acid) (PLA) and its nanocomposites, with silica nanoparticles (SiO2), as filler were investigated. Neat PLA films and PLA films with different percentage of hydrophobic fumed silica nanoparticles (0.2, 0.5, 1, 2, 3 and 5 wt. %) were prepared by solution casting method. Several tools were used to characterize the influence of different silica content on crystalline behavior, and thermal, mechanical and barrier properties of PLA/SiO2 nanocomposites. Results from scanning electron microscope (SEM) showed that the nanocomposite preparation and selection of specific hydro
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Dhapte, Vividha, Shivajirao Kadam, Varsha Pokharkar, Pawan K. Khanna, and Vishwas Dhapte. "Versatile SiO2 Nanoparticles@Polymer Composites with Pragmatic Properties." ISRN Inorganic Chemistry 2014 (January 29, 2014): 1–8. http://dx.doi.org/10.1155/2014/170919.

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In the present work, we report the fabrication of silica nanoparticles embedded polymeric (SiO2 nanoparticles@polymer) composite films for numerous traits like texture, folding endurance, crystallinity, size, thermal behavior, spectral analysis, and bioactivity. Significant facets of bulky, inert, inorganic materials are known to burgeon out due to the high surface area of nanosized particles. Nature and proportion of silica nanoparticles as well as polymers exhibited remarkable impact on the fabrication and quality of casted films. Hydrophilic silica nanoparticulate-PVA films depicted better
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Atta, Ayman, Mahmood Abdullah, Hamad Al-Lohedan, and Nermen Mohamed. "Coating Sand with New Hydrophobic and Superhydrophobic Silica/Paraffin Wax Nanocapsules for Desert Water Storage and Transportation." Coatings 9, no. 2 (2019): 124. http://dx.doi.org/10.3390/coatings9020124.

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Paraffin wax emulsions have gained immense attention as a cheap, environment-friendly, and aroma-free material for preparing superhydrophobic coatings. In this work, paraffin wax (PWs) capsules consisting of hydrophobic silica nanoparticles were used for coating desert sand. Different types of the hydrophobic silica nanoparticles, modified with new oleylamino- and oleylamide silane precursors, were prepared in the presence and absence of paraffin waxes. The particle sizes, surface charges, thermal stability, surface morphologies, and wetting characteristics of these nanoparticles were investig
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Abbaraju, Prasanna Lakshmi, Anand kumar Meka, Siddharth Jambhrunkar, et al. "Floating tablets from mesoporous silica nanoparticles." J. Mater. Chem. B 2, no. 47 (2014): 8298–302. http://dx.doi.org/10.1039/c4tb01337a.

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Floating tablets were prepared using hydrophobic (curcumin) and hydrophilic (captopril) drug loaded mesoporous silica nanoparticles respectively, leading to an improved dissolution rate of curcumin and controlled release for captopril.
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Luo, Jian Hui, Yuan Yang Li, Ping Mei Wang, et al. "A Facial Route for Preparation of Hydrophobic Nano-Silica Modified by Silane Coupling Agents." Key Engineering Materials 727 (January 2017): 353–58. http://dx.doi.org/10.4028/www.scientific.net/kem.727.353.

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Nano-silica was prepared using tetraethylorthosilicate (TEOS) as precursor by sol-gel technology based on stÖber method. These silica nanoparticals were further modified with silane coupling agents, i.e., Hexadecyltrimethoxysilane (HDTMS), dimethoxydiphenylsilane (DMMPS), to introduce organic functional groups on the surface of SiO2 nanoparticles. The Fourier transform-infrared (FTIR) spectra indicated that these silane coupling agents were anchored on the surface of silica particles. And the obtained organic–inorganic hybrid SiO2 particles showed an improvement in hydrophobicity, which can ef
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Ellateif, Tayseir M. Abd, Saikat Maitra, T. Murugesan, and Khairun Azizi Azizli. "Effect of Aluminium Sol on Silica Nanoparticles Texture and Properties." Advanced Materials Research 917 (June 2014): 56–60. http://dx.doi.org/10.4028/www.scientific.net/amr.917.56.

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This Silica sols were synthesized by alkali hydrolysis of tetraethyl orthosilicate (TEOS). These sols were modified with different percentage of aluminum sol to convert silica from hydrophilic to hydrophobic. The compositions of unmodified and modified silica nanoparticles were studied by X-ray fluorescence (XRF) and confirmed that the aluminum was anchor to the surface of silica nanoparticles. Further analysis by FESEM and Thermo gravimetric analysis (TGA) showed that the amount of modifier added to the silica sols had distinct effect on morphology and thermal stability of silica nanoparticle
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Dissertations / Theses on the topic "Hydrophobic silica nanoparticles"

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Ergul, Zeynep. "Silica Coating Of Monodisperse Hydrophobic Magnetite Nanoparticles Through Reverse Microemulsion Techniques." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614019/index.pdf.

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Magnetic nanoparticles find broad applications in biomedical field such as drug delivery, hyperthermia and magnetic resonance imaging (MRI). For these applications magnetic nanoparticles need to be coated with suitable materials which are soluble, biocompatible and nontoxic. Among these materials, silica is the most often used coating material. This thesis is focused on preparation of silica coated iron oxide magnetic nanoparticles. Magnetic iron oxide nanoparticles are synthesized by thermal decomposition method. In the presence of iron acetylacetonate Fe(acac)3, a high boiling point organic
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Duan, Yannan. "Fundamental Studies on Polymer and Organic-Inorganic Hybrid Nanoparticles Reinforced Silica Aerogels." University of Akron / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=akron1333079860.

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Giasuddin, Abul Bashar Mohammad. "Silane Modulation of Protein Conformation and Self-Assembly." DigitalCommons@USU, 2018. https://digitalcommons.usu.edu/etd/7029.

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This research focused on development of nanoparticle- based therapeutics against amyloid fibrils. Amyloid fibrils are associated with various diseases such as Parkinson’s, Huntington’s, mad cow disease, Alzheimer’s, and cataracts. Amyloid fibrils develop when proteins change their shape from a native form to a pathogenic “misfolded” form. The misfolded proteins have the ability to recruit more native proteins into the pathogenic forms, which self-assemble into amyloid fibrils that are hallmarks of the various protein-misfolding diseases listed above. Amyloid fibrils are highly resistant to deg
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Tanja, Radusin. "Priprema i karakterizacija nanokompozita polimlečne kiseline i silicijum (IV) oksida namenjenog za pakovanje hrane." Phd thesis, Univerzitet u Novom Sadu, Tehnološki fakultet Novi Sad, 2015. http://www.cris.uns.ac.rs/record.jsf?recordId=94853&source=NDLTD&language=en.

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Poli(mlečna kiselina) (PLA) predstavlja jedan od najpopularnijih komercijalnih biorazgradivih polimera. Iako može da zameni neke od najčešće korišćenih sintetskih polimera, neka njegova svojstva (loša barijerna, termička i mehanička) još uvek predstavljaju prepreku u široj primeni, posebno za pakovanje hrane. Jedan od najsavremenijih načina prevazilaženja nedostataka u svojstvima biopolimera predstavljaju nanotehnologije.U ovom radu ispitan je uticaj dodatka različitih koncentracija hidrofobnih nanočestica silicijum (IV) oksida (od 0.2 mas.% do 5 mas.%) pripr
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El, Fouhaili Bandar. "Development of hydrophobic/superhydrophobic anti-fouling photopolymer coatings for PVC reactor." Thesis, Mulhouse, 2014. http://www.theses.fr/2014MULH6191.

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Lors de la polymérisation en suspension du chlorure de vinyle, il se forme sur les parois un dépôt de polychlorure de vinyle (PVC). Ce phénomène, nommé encroûtement, génère des problèmes car il limite la production de PVC et affecte la qualité du produit final. Dans ce contexte, un projet FUI (Fond Unique Interministériel) intitulé «Ecoating», a été financé dans le cadre d’une collaboration entre plusieurs partenaires industriels et universitaires (INEOS ChlorVinyls, Mäder Research, Avenir Group, LPIM, ESPCI-ParisTech). Deux thèses ont vu le jour au LPIM, avec pour but de développer un revêtem
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Salinas, Soler Yolanda. "Functional hybrid materials for the optical recognition of nitroaromatic explosives involving supramolecular interactions." Doctoral thesis, Editorial Universitat Politècnica de València, 2013. http://hdl.handle.net/10251/31663.

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La presente tesis doctoral titulada ¿Materiales funcionales híbridos para el reconocimiento óptico de explosivos nitroaromáticos mediante interacciones supramoleculares¿ se basa en la combinación de principios de Química Supramolecular y de Ciencia de los Materiales para el diseño y desarrollo de nuevos materiales híbridos orgánico-inorgánicos funcionales capaces de detectar explosivos nitroaromáticos en disolución. En primer lugar se realizó una búsqueda bibliográfica exhaustiva de todos los sensores ópticos (cromogénicos y fluorogénicos) descritos en la bibliografía y que abarca
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Huang, Yi-Lin, and 黃怡琳. "Preparation of hydrophobic magnetic silica nanoparticles for adsorbing amphiphilic molecules." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/79011058835029100629.

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碩士<br>國立高雄應用科技大學<br>化學工程與材料工程系<br>98<br>Superparamagnetic nanoparticles with functional surface modification have been applied to bioseparation, magnetic resonance imaging, hyperthermia therapy and drug delivery. Several signaling biomolecues, e.g., steroids and cholesterol derivatives, are amphiphilic. It is thus desirable to prepare a magnetic nanoparticle capable of adsorbing amphiphilic compounds, which may be used in a variety of biomedical applications. Accordingly, the superparamagnetic magnetic silica nanoparticles modified with basic and hydrophobic functional groups were prepared
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Tsai, Wei-Ting, and 蔡偉婷. "Preparation of acrylic resin-hollow silica nanoparticles hydrophobic composite coatings on plastic substrates." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/3b7vpx.

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碩士<br>淡江大學<br>化學工程與材料工程學系碩士班<br>102<br>In this study, ~90 nm spherical hollow silica nanoparticles were synthesized by the sol-gel method at room temperature. The synthesized hollow nanoparticles were surface-modified using the coupling agent and a fluorosilane in order to provide C=C bonds and hydrophobicity, respectively. The morphology and size/zeta potential of the formed nanoparticles were observed and measured by transmission electron microscopy and dynamic light scattering, respectively. Transparent composite coatings composed of the nanoparticles and acrylic monomer were prepared on th
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Jhuang, Jheng-Jia, and 莊正加. "Leakage Characteristics of 3-aminopropyltriethoxysilane Sensing Membrane mixed with polydimethylsiloxane-treated hydrophobic fumed silica nanoparticles." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/28667856419305661480.

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碩士<br>國立暨南國際大學<br>電機工程學系<br>99<br>In the thesis, the membrane characteristics including leakage current, membrane structure and electrical interference for biomedical testing of a mixture of 3-aminopropyltriethoxysilane (γ-APTES) and polydimethylsiloxane (PDMS)-treated hydrophobic fumed silica nanoparticles (NPs) fabricated by using semiconductor processing technique were investigated. The effects of UV irradiation on the membrane characteristics were also studied. The sensing membranes were prepared either by spin-coating or capillary atomic force microscopy (C-AFM) tip-coating method. The le
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Wang, Chien-Han, and 王建翰. "Surface-modificationof hollow silica nanoparticles to prepare highly transparent and hydrophobic composite coatings on plastic substrates." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/23066612935595585521.

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碩士<br>淡江大學<br>化學工程與材料工程學系碩士班<br>104<br>In this study, ~100 nm spherical hollow silica nanoparticles were synthesized by the sol-gel method at room temperature, and were surface-modifyed. The modification was divided into two parts: (I) 3-(trimethoxysilyl)propylmethacrylate (MSMA) and 1H,1H,2H,2H-perfluorooctyltrimethoxysilane co-modified hollow silica nanoparticles; (II) hexamethyldisilazane (HMDS) modified hollow silica nanoparticles. In the method (I), the composite coatings were prepared using acrylic monomer and hollow silica nanoparticles via spin coating on the PMMA substrate followed by
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Book chapters on the topic "Hydrophobic silica nanoparticles"

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Laguta, I. V., P. O. Kuzema, O. N. Stavinskaya, and O. A. Kazakova. "Supramolecular Complex Antioxidant Consisting of Vitamins C, E and Hydrophilic–Hydrophobic Silica Nanoparticles." In Nanomaterials and Supramolecular Structures. Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-90-481-2309-4_22.

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Yuan, Shuai, Shusuke Oakada, Keiichi Maki, et al. "Synthesis and Photocatalytic Activity of TiO2 Nanoparticles Loaded on the Fluorine-Modified Hydrophobic Mesoporous Silica." In Solid State Phenomena. Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/3-908451-31-0.1817.

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Conference papers on the topic "Hydrophobic silica nanoparticles"

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Gavrielatos, Ilias, Ramin Dabirian, Ram S. Mohan, and Ovadia Shoham. "Separation Kinetics of Oil/Water Emulsions Stabilized by Nanoparticles." In ASME 2017 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/fedsm2017-69112.

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A state-of-the-art, Portable Dispersion Characterization Rig (P-DCR) is used to investigate the effect of nanoparticles on oil-water emulsion formation and stabilization. Mineral oil and distilled water are used as the test fluids and separation profiles are obtained from the experiments using a sophisticated software. Spherical silica nanoparticles of average primary particle size of 20 nm were selected as the emulsifying agent, since silica is commonly found in the produced fluids. Nanoparticles of different wettabilities were used to investigate their effect on separation kinetics of solid
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Zhu, Youyi, Peng Yu, and Jian Fan. "Study on Nanoparticle Stabilized Emulsions for Chemical Flooding Enhanced Oil Recovery." In International Petroleum Technology Conference. IPTC, 2021. http://dx.doi.org/10.2523/iptc-21456-ms.

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Abstract Chemical flooding is one of enhanced oil recovery (EOR) methods. The primary mechanism of EOR of chemical flooding is interfacial tension reduction, mobility ratio improvement and wettability changes. Recent studies showed that enhancing emulsification performance was beneficial to improve oil displacement efficiency. The formation of Pickering emulsion by nanoparticles could greatly improve the emulsifying performance. Using nanoparticles stabilized emulsions for chemical EOR application is a novel method. In this study, six different types of nanoparticles were selected, including h
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Hsu, Yi, and Yingtao Liu. "Investigation of Hydrophobic Nanoporous Particle Liquids for Impact Protection." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-67342.

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Recently, the development of hydrophobic nanoporous liquids has drawn increased attention, especially for the applications of energy absorption and impact protection. Although significant amount of research has been conducted to synthesis and characterize materials to protect structures from impact damage, the tradition methods needed to convert kinetic energy to other forms, such as heat and cell bulking, during impact protection. Due to their high energy absorption efficiency, hydrophobic nanoporous particle liquids are one of the most attractive impact mitigation materials. When impacted, s
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Movassagh, Barahman, Akbar Mobaraki, and Babak Karimi. "A novel water-tolerant organosulfonic acid-functionalized silica-coated magnetic nanoparticles as a hydrophobic, recyclable and magnetically separable catalyst for the solvent-free Biginelli reaction." In The 17th International Electronic Conference on Synthetic Organic Chemistry. MDPI, 2013. http://dx.doi.org/10.3390/ecsoc-17-a009.

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Taylan, Onur, and Halil Berberoglu. "Rheological Properties of “Dry Water”." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-64114.

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This study reports the rheological properties of the novel material “dry water” which contains about 98% by weight water but resembles a dry powder. Dry water is a water-in-air inverse foam which consists of microscopic water droplets encapsulated with hydrophobic fumed-silica nanoparticles. This novel material offers a large surface to volume ratio on the order of 2 × 105 m2/m3 for the gas and water phases. Thus, it provides a convenient medium for surface area limited processes and finds applications from cosmetics to gaseous fuel storage. In this study both steady and dynamic rheological pr
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Islam, Nazmul, and Davood Askari. "Optimizing Biased AC Electroosmosis Micropump by Hydrophobic Nanoparticle Monolayer." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-40631.

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This paper describes the optimization of bidirectional micropump velocity by a deposition of hydrophobic nanoparticle (NP) monolayer. A nano-composite polymer coating contains a homogeneous mixture of Silicon NP in polydimithylsiloxane (PDMS) which will modify the micropump surface to a hydrophobic surface. For hydrophobic nature of PDMS, the monolayer coating will modify the hydrophilic surface of biased AC electroosmotic micropump to a hydrophobic surface. Based on the results obtained from our previous research work for the biased AC electroosmotic micropump, the pumping velocity was 300 mi
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Jo, Hang Jin, Hyungmo Kim, Ho Seon Ahn, et al. "Experimental Study of Boiling Phenomena by Micro/Milli Hydrophobic Dot on the Silicon Surface in Pool Boiling." In ASME 2009 7th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2009. http://dx.doi.org/10.1115/icnmm2009-82221.

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Many pool boiling experiments to enhance the nucleate boiling condition have been conducted and could get brilliant and challengeable results. A consensus was that CHF and heat transfer were affected by a modified heating surface. One of the efforts was the nanofluids experiments, and they have exhibited an incredible enhancement of CHF when nanofluids have been used as a working fluid in pool boiling. The results also have showed clearly that such large CHF enhancement came from the deposition of nanoparticles on the heating surface changing the surface condition. The surface covered by oxidi
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Kim, Moo Hwan. "The Effect of Nanoscale Surface Modification on Boiling Heat Transfer and Critical Heat Flux." In ASME 2010 8th International Conference on Nanochannels, Microchannels, and Minichannels collocated with 3rd Joint US-European Fluids Engineering Summer Meeting. ASMEDC, 2010. http://dx.doi.org/10.1115/fedsm-icnmm2010-31276.

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Recently, there were lots of researches about enormous CHF enhancement with the nanofluid in pool boiling and flow boiling. It is supposed the deposition of nanoparticles on the heated surface is one of main reasons. In a real application, nanofluid has a lot of problems to be used as the working fluid because of sedimentation and aggregation. The artificial surfaces on silicon and metal were developed to have the similar effect with nanoparticles deposited on the surface. The modified surface showed the enormous ability to increase CHF in pool boiling. Furthermore, under flow boiling, it had
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Askari, Davood, and Nazmul Islam. "Improving the Pumping Efficiency of a Micropump Using Hydrophobic Nanocomposite Coating." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-87837.

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This paper describes the improvement of bidirectional micropump velocity by deposition of a hydrophobic nanocomposite thin layer. A polymer base nanocomposite coating consisting of a homogeneous mixture of Silicon nanoparticles in polydimithylsiloxane (PDMS) is used to improve the hydrophobicity of the micropump surfaces. For hydrophobic nature of PDMS and the monolayer coating with nanoscale surface roughness, the hydrophilic surface of a biased AC electroosmotic micropump will transform to a hydrophobic surface. Here in this work, improvement of the micropump velocity is investigated through
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Mazumder, Sonal, Suvojit Ghosh, Joseph O. Falkinham, and Ishwar K. Puri. "Factors Affecting the Assembly of Carbon Nanostructures With Cells and Enzymes." In ASME 2010 First Global Congress on NanoEngineering for Medicine and Biology. ASMEDC, 2010. http://dx.doi.org/10.1115/nemb2010-13258.

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Carbon nanostructures were synthesized and deposited through flame synthesis on stainless steel grids and foils, and on bare and ferrofluid-painted silicon wafers at different nonpremixed flame locations to produce hydrophobic surfaces. The hydrophobicity is characterized through the contact angle for water droplets placed on the surface. The surface morphology of the nanoparticles is obtained from high-resolution FESEM images. Following synthesis and deposition the adherence, activity, and stability of bacterial cells, antibodies, and enzymes on the carbon nanostructures can be studied.
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