scholarly journals Synthesis and Characteristics Of ( PAV-PAVC-Ti ) Nanocomposites

2020 ◽  
pp. 21-26
Author(s):  
Waleed Khalid ◽  
Maha Khalid Alshmmari ◽  
Maryam Adnan Al-Ethary
Keyword(s):  
Fourier Transform ◽  
Electron Microscope ◽  
Optical Microscope ◽  
Casting Method ◽  
Sem Images ◽  
Microscope Images ◽  
Grain Distribution ◽  
Titanium Nanoparticles ◽  
The Fourier Transform ◽  
Scanning Electron

 In this study, (PVA-PVAC-Ti) nanocomposites have been prepared by using the 'casting method' with different weight percentages of titanium nanoparticles. The (PVA-PVAC-Ti) nanocomposites have been diagnosed by different routes such as the 'Fourier Transform Infrared Spectroscopy (FTIR)', 'scanning electron microscope (SEM)' images, and optical microscope images. The experimental results (FTIR) showed increasing the value of the absorbance of the (PVA-PVAC-Ti) nanocomposites with an increase in the proportion of titanium nanoparticles. All peak characteristics remain the same and the most bond in the same wavenumber. The morphology of the (PVA-PVAC-Ti) nanocomposites films has been studied using (SEM) technique, which showed grain distribution at surface morphology and grain aggregates with increasing of titanium nanoparticles. Photos optical microscope shows the distribution of titanium nanoparticles atoms for all nanocomposite's films, it also shows a continuous network of ions inside the polymers in a ratio (16 wt.%) of (Ti.  nanoparticles).

Effects of the CNT on the Preparation and Electrochemical Performances of the CNT / PANI Hollow Sphere Composite

2011 ◽  
Vol 687 ◽  
pp. 61-64
Author(s):  
Qi Jiang ◽  
De Yu Xie ◽  
Guang Gang Fu ◽  
Bin Huang ◽  
Xiao Feng Zhao ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Electron Microscope ◽  
Hollow Sphere ◽  
Pure Pani ◽  
Electrochemical Performances ◽  
Cyclic Voltammogram ◽  
Life Testing ◽  
Pani Composite ◽  
The Fourier Transform ◽  
Scanning Electron

In this paper, a hollow sphere carbon nanotube (CNT) / polyaniline (PANI) composite was prepared by using the Fe3O4as a template. At the same time, the pure PANI and CNT/PANI composite were obtained with same method without Fe3O4template. The composition and the morphology of the obtained samples were characterized by the Fourier transform infrared spectroscopy and scanning electron microscope. And the electrochemical performances of the obtained materials were tested by the cyclic voltammogram, galvanostatic charging/discharging and cycle life testing. The results show that the obtained hollow sphere CNT/PANI composite have larger surface area than pure PANI and CNT/PANI composite for its hollow sphere structure. The obtained hollow sphere CNT/PANI composite have 185 F/g specific capacitance (in organic electrolyte), which is much more than those of the pure PANI and CNT/PANI composite (about 65 F/g, 152 F/g). The results also show that CNT have a great effect on the preparation of the hollow sphere CNT/PANI composite.

Application of Microbial Transglutaminases in Anti-Crease Finish of Silk Fabric

2008 ◽  
Vol 12 (1) ◽  
pp. 39-46 ◽  
Author(s):  
Xiaorui Tian ◽  
Weidong Geo ◽  
Hongbo Wang ◽  
Bingyao Deng
Keyword(s):  
Hydrogen Peroxide ◽  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Breaking Strength ◽  
Silk Fabric ◽  
Recovery Angle ◽  
The Fourier Transform ◽  
Scanning Electron

In this paper, microbial transglutaminase (MTG) was applied to process silk fabric for improving its crease resistance under the prerequisite of maintaining other performances. Not only was the effect of MTG on silk fabric investigated through the Fourier transform infrared spectroscopy (FR), but analysis was also undertaken in the microcosmic structure of fibroin through the scanning electron microscope (SEM). Solo MTG treatment as well as compound treatments of MTG followed by hydrogen peroxide, protease and ultrasonic, all showed that MTG can improve the crease resistance of silk fabric. It also enhanced its tensile breaking strength or amended damage in the tensile breaking strength caused by pretreatments.Simultaneously, comparison with other treatments showed that compound treatment of MTG followed by ultrasonic exerted a better coordinated effect and conferred better performances, which made the wrinkle recovery angle (WRA) increase by 17.4% and tensile breaking strength improve by 11.2% respectively. At the same time, other performances were still maintained well.

scholarly journals Application of Fluorescent Label in Polymer Nanofibers

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
Lucie Zarybnicka ◽  
Radka Bacovska ◽  
Zuzana Nadvornikova ◽  
Numan Almonasy ◽  
Tomas Syrovy
Keyword(s):  
Fourier Transform ◽  
Electron Microscope ◽  
Fluorescent Probe ◽  
Solid Phase ◽  
Polyamide 6 ◽  
Total Reflection ◽  
Attenuated Total Reflection ◽  
Fluorescent Label ◽  
Microscope Images ◽  
Scanning Electron

The electrospinning of fluorescent probe polyamide 6 doped by 7H-benzimidazo[2,1-a]benzo[de]isoquinolin-7-on is presented as a model processing photoluminescent nanofibers. The presence of the fluorescent probe in the fiber layers was confirmed by attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR); the surface nanofiber structure was described by high-resolution fluorescence microscope and scanning electron microscope images. The prepared nanofibers with the fluorescent label were further characterized by fluorescence spectroscopy, both in the solid phase and in the solution.

The Possibility of Improving Scanning Microscope Images by After-Treatment

1968 ◽  
Vol 26 ◽  
pp. 358-358
Author(s):  
M. G. R. Thomson ◽  
A. V. Crewe
Keyword(s):  
Fourier Transform ◽  
Electron Beam ◽  
Fourier Transformation ◽  
Finite Size ◽  
Scanning Microscope ◽  
Constant Intensity ◽  
Low Contrast ◽  
Microscope Images ◽  
The Fourier Transform ◽  
Scanning Electron

The scanning electron microscope is particularly suited to the after-treatment of the image because the information is obtained in serial form, and may be processed using electronic analogue or digital computers. The techniques employed at present include logarithmic amplification, differentiation, and the subtraction of a constant intensity; all of these being intended to render low contrast detail more visible, and so making staining of the specimen less necessary.One further technique is the removal from the final picture of some of the effects of the finite size of the scanning electron beam. Essentially this involves construction of the Fourier transform of the picture, division by the Fourier transform of the scanning spot, and Fourier transformation of this result. It is possible to perform these operations in the case either of a scanning or conventional microscope by digitising the picture, doing the calculations numerically, and reconstructing the improved picture.

Automatic Focusing and Astigmatism Correction Method based on Fourier Transform of Scanning Electron Microscope Images

1999 ◽  
Vol 38 (Part 1, No. 2A) ◽  
pp. 957-960 ◽  
Author(s):  
Munehiro Ogasawara ◽  
Yuji Fukudome ◽  
Kiyoshi Hattori ◽  
Shuichi Tamamushi ◽  
Soshi Koikari ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Correction Method ◽  
Astigmatism Correction ◽  
Microscope Images ◽  
Automatic Focusing ◽  
Scanning Electron

scholarly journals Microstructural analysis of non-woven fabrics using scanning electron microscopy and image processing. Part 1: Development and verification of the methods

2002 ◽  
Vol 216 (3) ◽  
pp. 199-207 ◽  
Author(s):  
E Ghassemieh ◽  
M Acar ◽  
H Versteeg
Keyword(s):  
Image Processing ◽  
Fourier Transform ◽  
Microstructural Analysis ◽  
Orientation Distribution ◽  
Woven Fabrics ◽  
Computational Time ◽  
Sem Images ◽  
The Fourier Transform ◽  
Processing Techniques ◽  
Scanning Electron

This paper reports image analysis methods that have been developed to study the microstructural changes of non-wovens made by the hydroentanglement process. The validity of the image processing techniques has been ascertained by applying them to test images with known properties. The parameters in preprocessing of the scanning electron microscope (SEM) images used in image processing have been tested and optimized. The fibre orientation distribution is estimated using fast Fourier transform (FFT) and Hough transform (HT) methods. The results obtained using these two methods are in good agreement. The HT method is more demanding in computational time compared with the Fourier transform (FT) method. However, the advantage of the HT method is that the actual orientation of the lines can be concluded directly from the result of the transform without the need for any further computation. The distribution of the length of the straight fibre segments of the fabrics is evaluated by the HT method. The effect of curl of the fibres on the result of this evaluation is shown.

Effect of Process Condition in the Centrifugal Casting on the Mechanical Behavior of Cr Heat Resisting Steel

2010 ◽  
Vol 123-125 ◽  
pp. 463-466
Author(s):  
Hyup Jae Chung ◽  
Kyong Yop Rhee
Keyword(s):  
Fine Structure ◽  
Electron Microscope ◽  
Room Temperature ◽  
Centrifugal Casting ◽  
Process Condition ◽  
Tensile Tests ◽  
Optical Microscope ◽  
Sem Images ◽  
Moduli Of Elasticity ◽  
Scanning Electron

In the present study, the effects of forging or ring-mill processing on the tensile properties of B7B4 were investigated. Tensile specimens were fabricated including centrifugal casting (Case 1), centrifugal casting + forging (Case 2), and centrifugal casting + ring-mill (Case 3). Tensile tests were performed at room temperature. An optical microscope and a scanning electron microscope (SEM) were used to examine the changes in the microstructures of the specimens prepared by the three processes. The results showed that the moduli of elasticity and yield stresses of B7B4 prepared by the three processes had no much difference. The elongations of Case 2 and Case 3 were 30% higher than that of Case 1. SEM images revealed that the orientation and fine structure were affected by the forging and ring-mill processes.

Stinging apparatus of apoid wasps and bees as never seen before

ENTOMON ◽  
2020 ◽  
Vol 45 (2) ◽  
pp. 87-92
Author(s):  
Syed Najeer E Noor Khadri ◽  
Rabiya Begum
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
The Other ◽  
Campaniform Sensilla ◽  
Lateral Aspect ◽  
Hunting Behavior ◽  
Sem Images ◽  
Microscope Images ◽  
Ampulex Compressa ◽  
Scanning Electron

The stinging apparatus is expected to vary depending on the type of prey taken and the way it is carried in apoid wasps and the purpose of defense it serves in bees. To understand the differences in sting morphology, members of two apoid wasp families (Ampulicidae and Crabronidae) and a bee family (Halictidae) were studied. Scanning Electron Microscope images of lancets revealed tooth like projections on dorso-lateral aspect in Ampulex compressa (Fabricius, 1781) and blunt barbs on the lancets of Liris aurulentus (Fabricius, 1787) and Tachysphex bengalensis Cameron, 1889 whereas, in Halictus fimbriatellus Vachal, 1894 barbs are arranged in two rows on lancet, which includes four barbs on one side and three barbs on the other side of lancet which are not acutely pointed. The SEM images also indicated the presence of campaniform sensilla on the lancets of compressa. These findings help us to know the possible relationships of hunting behavior and modification of the sting in accordance.

Analyzing the Grating Profile Parameters Based on Scanning-Electron Microscope Images

2008 ◽  
Vol 381-382 ◽  
pp. 299-300 ◽  
Author(s):  
Y. Li ◽  
Li Jiang Zeng
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Diffraction Efficiency ◽  
Contour Line ◽  
Sem Images ◽  
Sem Image ◽  
Grating Fabrication ◽  
Microscope Images ◽  
Scanning Electron

Measuring grating profiles is very helpful for the analysis of specifications of gratings and improvement of grating fabrication techniques. We analyzed grating grooves by digitizing the scanning-electron microscope (SEM) images. Some kinds of filter and arithmetic were developed to extract the contour line of grating profile. In order to analyze the diffraction efficiency affected by the shape of grating profile, the calculated diffraction efficiency based on the SEM image and measured diffraction efficiency based on experiment was compared and analyzed.

PENGGUNAAN TiO2 PARTIKEL NANO HASIL SINTESIS BERBASIS AIR MENGGUNAKAN METODA SOL-GEL PADA BAHAN KAPAS SEBAGAI APLIKASI UNTUK TEKSTIL ANTI UV

Arena Tekstil ◽  
2013 ◽  
Vol 28 (1) ◽  
Author(s):  
Maya Komalasari ◽  
Bambang Sunendar
Keyword(s):  
Fourier Transform ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Sol Gel ◽  
Crosslinking Agent ◽  
X Ray Diffraction ◽  
Nano Tio2 ◽  
X Ray ◽  
Infra Red ◽  
Scanning Electron

Partikel nano TiO2 berbasis air dengan pH basa telah berhasil disintesis dengan menggunakan metode sol-gel dan diimobilisasi pada kain kapas dengan menggunakan kitosan sebagai zat pengikat silang. Sintesis dilakukan  dengan prekursor TiCl4 pada konsentrasi 0,3 M, 0,5 M dan 1 M, dan menggunakan templat kanji dengan proses kalsinasi pada suhu 500˚C selama 2 jam. Partikel nano TiO2 diaplikasikan ke kain kapas dengan metoda pad-dry-cure dan menggunakan kitosan sebagai crosslinking agent. Berdasarkan hasil Scanning Electron Microscope (SEM),diketahui bahwa morfologi partikel TiO2 berbentuk spherical dengan ukuran nano (kurang dari 100 nm). Karakterisasi X-Ray Diffraction (XRD) menunjukkan adanya tiga tipe struktur kristal utama, yaitu (100), (101) dan (102) dengan fasa kristal yang terbentuk adalah anatase dan rutile. Pada karakterisasi menggunakan SEM terhadap serbuk dari TiO2 yang telah diaplikasikan ke permukaan kain kapas, terlihat adanya imobilisasi partikel nano TiO2 melalui ikatan hidrogen silang dengan kitosan pada kain kapas. Hasil analisa tersebut kemudian dikonfirmasi dengan FTIR (Fourier Transform Infra Red) yang hasilnya memperlihatkan puncak serapan pada bilangan gelombang 3495 cm-1, 2546 cm-1, dan 511 cm-1,  yang masing-masing diasumsikan sebagai adanya vibrasi gugus fungsi O-H, N-H dan Ti-O-Ti. Hasil SEM menunjukkan pula bahwa kristal nano yang terbentuk diantaranya adalah fasa rutile , yang berdasarkan literatur terbukti dapatberfungsi sebagai anti UV.

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