Preparation and Characterization of Polypropylene Biocomposites Reinforced Palm Fruitlet Fiber

2013 ◽  
Vol 795 ◽  
pp. 281-285
Author(s):  
M. Muhammad Safwan ◽  
S.K. Sakhti ◽  
Hui Lin Ong ◽  
Md Akil Hazizan ◽  
M.K. Anis Sofiah ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Tensile Strength ◽  
Interfacial Adhesion ◽  
Smooth Surface ◽  
Filler Content ◽  
Sem Analysis ◽  
The Other ◽  
Scanning Electron

Polypropylene (PP) biocomposite containing 5, 10, 15, 20 and 25wt% of sodium hydroxide treated palm fruitlet fiber (TPFF) were prepared using Z-blade at 180°C at 50rpm. The composite was introduced with 3wt % of maleated anhydride grafted polypropylene (PP-g-MAH) as compatibilizer. The composites were characterized by performing tensile test and scanning electron microscopy (SEM) analysis. Results indicated that, the present of PP-g-MAH improved the tensile strength as the increasing of treated filler content. The improvement properties of the composite were attributed to better interfacial adhesion between the PFF and PP matrix in the presence of the PP-g-MAH. As for the overall results,5wt% TPFF/PP/PP-g-MAH composite shows the highest value tensile strength, 20wt% TPFF/PP/PP-g-MA composite exhibits the highest in Youngs modulus. While from the observation through SEM, the smooth surface fractured of 5wt% TPFF/PP/PP-g-MA which indicated as high rigidity compare to the other ratios.

Development of Alginate Based Active Films Containing Turmeric Essential Oil

2020 ◽  
Vol 861 ◽  
pp. 378-382
Author(s):  
Sophoan Phal ◽  
Muhammad Rafiullah Khan ◽  
Pattarin Leelaphiwat ◽  
Vanee Chonhenchob
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Tensile Strength ◽  
Water Vapor ◽  
Essential Oil ◽  
Sem Analysis ◽  
Film Properties ◽  
Elongation At Break ◽  
Control Film ◽  
Scanning Electron

Sodium alginate based films containing turmeric oil (TEO) at different concentrations (1, 2 and 3%) were developed. The film with no TEO was used as control. Incorporation of TEO had the effects on the film properties. With increasing TEO concentrations, thickness, elongation at break, permeability of oxygen and water vapor of the films significantly (p ≤ 0.05) increased. Whereas moisture content, tensile strength and modulus of elasticity significantly (p ≤ 0.05) decreased. Scanning electron microscopy (SEM) analysis showed more numerous pores and rougher surface of the antifungal films than the control film.

Growth and Characterization of Lithium Niobate Thin Films on Diamond/Si(100) Substrates

1998 ◽  
Vol 541 ◽  
Author(s):  
Shunxi Wang ◽  
Qingxin Su ◽  
Marc A. Robert ◽  
Thomas A. Rabson
Keyword(s):  
Electron Microscopy ◽  
Thin Films ◽  
Scanning Electron Microscopy ◽  
Smooth Surface ◽  
X Ray Diffraction ◽  
X Ray ◽  
Metal Organic ◽  
Scanning Electron ◽  
Organic Decomposition

AbstractA low temperature metal-organic decomposition process for depositing LiNbO3 thin films on diamond/Si(100) substrates is reported. X-ray diffraction studies show that the films are highly textured polycrystalline LiNbO3 with a (012) orientation. Scanning electron microscopy analyses reveal that the LiNbO3 thin films have dense, smooth surface without cracks and pores, and adhere very well to the diamond substrates. The grain size in the LiNbO3 thin films is in the range of ∼0.2-0.5 μm. The effect of the processing procedures on the surface morphology of the LiNbO3 films is investigated. Possible reasons for the elimination of microcracks in the LiNbO3 films are discussed.

scholarly journals CHARACTERIZATION OF CELLULOSE AND CELLULOSE NITRATE NANOFILMSSE

FLORESTA ◽  
2019 ◽  
Vol 49 (2) ◽  
pp. 219
Author(s):  
Mayara Elita Carneiro ◽  
Marina Stygar Lopes ◽  
Anna Luisa Franco Baumel de Andrade ◽  
Silvana Nisgoski ◽  
Graciela Inês Bolzon de Muniz
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Tensile Strength ◽  
Infrared Spectroscopy ◽  
Cellulose Nitrate ◽  
Mechanical Processing ◽  
Absorption Property ◽  
Kraft Pulps ◽  
Scanning Electron

The objective of this work was the characterization of cellulose and cellulose nitrate nanofilms from the mixture of Kraft pulps of  Pinus sp. and Eucalyptus sp. bleached. The production of nanocellulose was made by mechanical processing. To obtain the cellulose nitrate, the nitration was carried out in part of the produced nanocellulose. The characterizations were performed by means of scanning electron microscopy, medium infrared spectroscopy, tensile strength and absorption assay.  The results demonstrate that there was influence of  nitration in the characteristics of the films produced. The nanofilms of cellulose nitrate appear more interesting for the absorption property, indicating the use of this process for uses that require this characteristic.

The Preparation and Assessment of the Rigid Aerogel Insulation Composites

2012 ◽  
Vol 512-515 ◽  
pp. 301-305
Author(s):  
Rui Xiang Liu ◽  
Tang Yin Cui ◽  
Chang Ling Zhou ◽  
Chong Hai Wang ◽  
Yan Yan Wang ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Grain Size ◽  
Tensile Strength ◽  
Constant Pressure ◽  
Composite Ceramic ◽  
The Other ◽  
Ft Ir ◽  
Coefficient Of Heat Conductivity ◽  
Scanning Electron

The hydrophobic aerogel heating-insulating composite ceramic was fabricated in the way of constant pressure. The properties of the ceramic were attributed through FT-IR and energy spectrum. The microstructure and phase transformation of the insulation composites ceramic was characterized by scanning electron microscopy. The results show that after compositing with aerogel the coefficient of heat conductivity of the heat-insulating ceramic decreases forty-sixty percent and the compressive strength increases a hundred percent. There is little change to the tensile-strength. The holes of the ceramic are full of aero gel particles whose grain size is ten-twenty μm and the distribution of pore size is ten-seventy nm. After heating at 400°C for 12 minutes by quartz lamp on the surface of the ceramic which the thick of it is 8mm, the temperature of the other side increases 10°C .When the thick of the ceramic is 16mm, the temperature of the other side remains unchanged. The ceramic has excellent heating-insulting property.

scholarly journals Effect of prophylactic treatments on the superficial roughness of dental tissues and of two esthetic restorative materials

2003 ◽  
Vol 17 (1) ◽  
pp. 63-68 ◽  
Author(s):  
Daniele Salami ◽  
Maria Aparecida Alves de Cerqueira Luz
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Dental Plaque ◽  
Composite Resin ◽  
Sem Analysis ◽  
The Other ◽  
Tooth Surface ◽  
Dental Tissues ◽  
Restorative Materials ◽  
Scanning Electron

Dental prophylaxis is a common way to remove dental plaque and stain, both undesirable factors in most dentistry procedures. However, besides cleaning the tooth surface, prophylactic techniques may increase the surface roughness of restorations and dental tissues, which, in turn, may result in plaque accumulation, superficial staining and superficial degradation. This study evaluated the effect of three prophylactic techniques - sodium bicarbonate jet, pumice paste and whiting paste - on the superficial roughness of two restorative materials - a composite resin and a compomer - and on the superficial roughness of two dental surfaces - enamel and cementum/dentin - through rugosimetric and scanning electron microscopy (SEM) analysis. Statistical analysis of the rugosimetric data showed that the use of pumice paste on enamel produced a significantly smoother surface than the natural surface. However, comparing the effect of the three techniques, prophylaxis with the pumice paste produced a rougher surface than did the other techniques as regards enamel and cementum/dentin probably due to its abrasiveness. On composite resin, the pumice paste only produced a rougher surface than did the whiting paste. On compomer, all of the applied treatments produced similar results. Based on rugosimetric and SEM analysis, we could conclude that the prophylactic treatments employed did not improve roughness of the studied surfaces. As to the effects of the techniques, they were different depending on the surfaces on which the prophylactic treatments were applied.

scholarly journals Interface Microstructure and Nanoindentation Characterization of Laser Offset Welded 5052 Aluminum to Press-Hardened Steel Using a Brass Interlayer

Metals ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 1143 ◽  
Author(s):  
Xiaobing Cao ◽  
Xiongfeng Zhou ◽  
Zhou Li ◽  
Zhi Luo ◽  
Ji’an Duan
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Tensile Strength ◽  
Fracture Behavior ◽  
Hardened Steel ◽  
Interface Microstructure ◽  
X Ray Diffraction ◽  
X Ray ◽  
Scanning Electron

Laser offset welding of 5052 aluminum to press-hardened steel using a brass interlayer was carried out. The cross-sectioned macrostructure and tensile strength were governed by varying the thickness of the brass interlayer. The maximum tensile strength reached 56.4 MPa when the thickness of brass interlayer was 0.05 mm. Subsequently, the interface microstructure, the nanoindentation characterization, and the fracture behavior were evaluated experimentally by means of scanning electron microscopy (SEM), energy-dispersive X-ray spectrometer (EDS), and micro-X-ray diffraction (micro-XRD), respectively. It was found that the intermetallic compound (IMC) layer at the interface consisted of an Fe2Al5 layer and an FeAl layer, and the estimated nanohardness of Fe2Al5, FeAl, and Fe3Al were 16.11 GPa, 9.48 GPa, and 4.13 GPa, respectively. The fracture of the joint with the 0.05 mm brass interlayer was a mixture of cleavage fracture and intergranular fracture, while that of the joint with the 0.1 mm brass interlayer exhibited the characterization of a major dendrite arm, leaving a metallurgical connected zone consisting of the Al2Cu and the α-Al phase.

scholarly journals Synthesis, Characterization of Nano Film from Water Lettuce (Pistia Stratiotes) and Its Antimicrobial Activity

2019 ◽  
Vol 8 (4) ◽  
pp. 5386-5389
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Morphological Structure ◽  
Cellulose Fibers ◽  
Sem Analysis ◽  
Pistia Stratiotes ◽  
Water Lettuce ◽  
Polyethylene Glycol 400 ◽  
Scanning Electron

A thin nanofilm was achieved using water lettuce (Pistia Stratiotes) plant extract. Characterization of the nanofilm was done tounderstand the thickness and morphology of the resulting film. The addition of the polyethylene glycol 400 was suitable for the proper dissolution of cellulose. Characterization and study of morphological structure of cellulose fibers was done by using scanning electron microscopy(SEM). The resulting data of SEM analysis was acceptable for water lettuce extract, as content of cellulose fibers was more.

Characterization of Si Single Crystals by Conductivity Mode Scanning Electron Microscopy

1975 ◽  
Vol 33 ◽  
pp. 260-261
Author(s):  
H. J. Leamy ◽  
A. J. R. de Kock ◽  
L. C. Kimerling ◽  
S. D. Ferris
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Sem Analysis ◽  
Schottky Barriers ◽  
Type B ◽  
Melt Quenching ◽  
X Ray ◽  
P Type ◽  
Scanning Electron

We have recently examined the microscopic electrical inhomogeneities present in dislocation free, floating zone, Si crystals grown under various conditions by conductivity mode scanning electron microscopy. Schottky barriers produced by evaporation of thin Au-Pd (on N type) or Ti (on P type) electrodes were employed in order to eliminate possible changes in defect structure or electrical activity during production of a diffused junction.Doped and undoped crystals, as well as crystals subjected to special treatments, such as melt quenching were examined in this study. Prior to SEM analysis, each crystal was characterized by preferential etching, Cu or Li decoration, and x-ray topography. All of the defects detected by these methods, save C impurity striations detected via their dilatation of the Si lattice in x-ray topographs, were observed in the SEM experiments. For example, “swirl” defects of both type “A” (large) and type “B” (small) were readily revealed via the enhanced recombination rate of electron beam injected carriers in their vicinity (see Figs. 1 and 2).

Tissue Response to Vascular Prosthetic Materials

1975 ◽  
Vol 33 ◽  
pp. 406-407
Author(s):  
R.J. Narconis ◽  
J.W. Spindler ◽  
L.J. Billy ◽  
S. Rana
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Light Microscopy ◽  
Smooth Surface ◽  
Subcutaneous Tissue ◽  
Tissue Response ◽  
The Other ◽  
Time Intervals ◽  
Prosthetic Materials ◽  
Scanning Electron

Tissue response to three types of vascular prosthetic materials was evaluated by correlation of scanning electron microscopy and light microscopy. Two clinically established materials, woven dacron and woven teflon, and an experimental material, expanded polytetrafluoroethylene (Goretex) were employed. They were implanted in the subcutaneous tissue of rats and removed at time intervals ranging from 48 hours to 30 days. Half of the retrieved material was fixed in 10% formalin and examined by routine light microscopy. The other half was glutaraldehyde fixed and acetone/CO2 critical point dried, then examined by scanning electron microscopy.Prior to this study, the three materials were evaluated by scanning electron microscopy to establish topographic landmarks. The woven dacron had bundles of relatively large, rough fibers; the woven teflon had fibers of similar size but with a smooth surface; the PTFE, however, had a surface composed of fibers and pores only a few micra in diameter.

Production and Characterization of Whey Protein Concentrate (WPC) Based Nano-Fibers

2018 ◽  
Vol 923 ◽  
pp. 47-50
Author(s):  
Faik Nüzhet Oktar ◽  
Sena Su ◽  
Burak Ozbek ◽  
Sevil Yücel ◽  
Dilek Kazan ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Tensile Strength ◽  
Whey Protein ◽  
Composite Nanofibers ◽  
Whey Protein Concentrate ◽  
Protein Concentrate ◽  
Fourier Transformed Infrared Spectroscopy ◽  
Scanning Electron

In this study, whey protein concentrate (WPC) and poly (ε-caprolactone) (PCL) composite nanofibers were prepared by electrospinning in the diameter of 50-350nm. Characterization tests of the polymer solutions such as density, viscosity, conductivity was studied. Fourier-transformed infrared spectroscopy (IR) results confirmed that the processed fibers were composed of both PCL and WPC constituents. Morphology of nanofibers composite was observed using scanning electron microscopy (SEM). Moreover the PCL/WPC nanofibers with high WPC content exhibited the maximum tensile strength (about 1.40 MPa).

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