排序方式: 共有55条查询结果,搜索用时 953 毫秒
51.
Nadir Kiraz Esin Burunkaya Ömer Kesmez Meltem Asiltürk H. Erdem Çamurlu Ertuğrul Arpaç 《Journal of Sol-Gel Science and Technology》2010,56(2):157-166
In this paper, novel fluorinated silane compound was prepared by adding hydroxyl terminated Fluorolink D10H oligomer to 3-(triethoxysilyl)propylsuccinicanhydride.
The obtained silane system was independently composed with 3-Aminopropyltrimethoxysilane, 3-Glycidyloxypropyltrimethoxysilane
and 3-Glycidyloxypropyltriethoxysilane and, then the prepared coating solutions were applied to glass surface by spin-coating
method. The chemical bonding between groups in system was investigated by Fourier Transform Infrared Spectroscopy analyses.
The elemental composition of coatings was determined using Energy Dispersive X-ray Spectroscopy analyses. Its structure and
surface properties were analyzed by scanning electron microscopy, atomic force microscopy, contact angle measurement and Ultraviolet–visible
Absorption Spectroscopy. The amounts of fluorine on the coatings prepared with GF20-D10H-AMMO, GF20-D10H-GLYEO and GF20-D10H-GLYMO
are 31, 32 and 34% at, respectively. Transparent coatings with smooth surface and uniform thickness were observed. The coatings
had nanoscale roughness. The contact angles of coatings for water ranged from 88 to 107o, and that of n-hexadecane ranged from 53 to 60o. 相似文献
52.
Hydrothermal synthesis and characterization of nanocrystalline ZrO2 and surface modification with 2-acetoacetoxyethyl methacrylate 总被引:1,自引:0,他引:1
Funda Sayılkan Meltem Asiltürk Esin Burunkaya Ertuğrul Arpaç 《Journal of Sol-Gel Science and Technology》2009,51(2):182-189
For the utilization as inorganic/organic hybrid nanomaterials for optical purposes, nanocrytalline tetragonal ZrO2 was synthesized by hydrothermal method using zirconium(IV)-n-propoxide as precursor material. Surface of the ZrO2 particles was then modified with 2-acetoacetoxyethyl methacrylate used as a copolymer for coatings. X-ray diffraction analysis
revealed that both ZrO2 and modified ZrO2 are in tetragonal crystalline phase. As proved by transmission electron microscope and particle size analysis, average particle
sizes of ZrO2 and modified ZrO2 were found as 6.22 and 14.7 nm, respectively. ZrO2 powder was easily dispersed either in water or n-hexane. Ultraviolet diffuse reflectance spectrophotometer analysis for ZrO2 and surface modified ZrO2 showed that maximum absorption peaks are at 215 and 225 nm, respectively. 相似文献
53.
This paper describes the preparation and characterization of ZrO2 thin films deposited on silicon wafer by spin coating method. Nanocrystalline ZrO2 was synthesized by hydrothermal method using zirconium (IV)-n-propoxide as a precursor material. Surface of the ZrO2 particles was then modified with 2-acetoacetoxyethyl methacrylate used as a copolymer for coatings. The optical properties, nanostructure and surface morphology of the thin films prepared from surface modified ZrO2 nanoparticles were examined by optical spectroscopy, X-ray diffraction and scanning electron microscopy, respectively. It was found that the films deposited on silicon wafer have crystalline structure of monoclinic (111) at temperature of 150 °C. It was observed that films depict very dense material that does not present any granular or columnar structure. It was found that optical transparency of thin ZrO2 films distributed in the range of 30-40 percent in the spectral range 400-800 nm. Refractive index of ZrO2 films were determined as functions of ZrO2 content and it was found that the refractive index increases from 1.547 to 1.643 with increased ZrO2 content. 相似文献
54.
Meltem Evrenosoglu Adiyaman Sennur Somali 《Numerical Methods for Partial Differential Equations》2010,26(2):412-425
In this article, Taylor's Decomposition method is introduced for solving one‐dimensional Bratu problem. The numerical scheme is based on the application of the Taylor's decomposition to the corresponding first order differential equation system. The technique is illustrated with different eigenvalues and the results show that the method converges rapidly and hence approximate the exact solution very accurately for relatively large step sizes. © 2009 Wiley Periodicals, Inc. Numer Methods Partial Differential Eq 2010 相似文献
55.
Goral Levent Sezen Meltem Ow-Yang Cleva W. Günhan Büşra Buyukaksoy Aligul 《Journal of Solid State Electrochemistry》2023,27(3):655-666
Journal of Solid State Electrochemistry - A powder-free solid oxide cell electrode fabrication route is demonstrated, in which a polymeric precursor, containing the cations of electrocatalyst and... 相似文献