Study on the Preparation of PSA NanoFibers Using Electro-Spinning Technology and its Characterizations

2012 ◽  
Vol 531-532 ◽  
pp. 527-530
Author(s):  
Wen Jie Chen ◽  
Bin Jie Xin ◽  
Xiang Ji Wu
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Surface Morphology ◽  
Applied Voltage ◽  
Solution Concentration ◽  
The Self ◽  
Experimental Results ◽  
Uniform Structure ◽  
Homogeneous Network ◽  
Scanning Electron

Polysulfonamide (PSA) superfine fibers were prepared by the self-developed device using the electrospinning technology. The micro surface morphology of the manufactured PSA fibers was characterized by the Scanning Electron Microscope (SEM). It was found that the diameter of PSA fibers and its variance can be influenced by the electrospinning parameters. The experimental results indicate that the morphology of PSA fibers ranged from irregular (beaded) to uniform structure with an increase of solution concentration; the thickness and its variance of the PSA fibers were decreased with the increasing of applied voltage; the morphology and thickness of the PSA fibers were also affected by the tip-to-collector distance. Our investigation shows that the diameter of the PSA fibers can reach around 100nm when spun at the conditions of 28kv applied voltage, 10wt% solution concentration and 15 cm tip-target distance, with a related homogeneous network distribution.

scholarly journals Additives Aid Switch to Protect the Photodegradation of Plastics in Outdoor Construction

2019 ◽  
Vol 22 (4) ◽  
pp. 277-282
Author(s):  
Salam A. Mohammed ◽  
Rahimi M. Yusop ◽  
Mohammed Abdulsattar Mohammed ◽  
Rasheed Abed Mohammed ◽  
Dina S. Ahmed ◽  
...  
Keyword(s):  
Schiff Base ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Surface Morphology ◽  
Ultraviolet Radiation ◽  
Vinyl Chloride ◽  
Leaching Test ◽  
Poly Vinyl Chloride ◽  
Effective Additive ◽  
Scanning Electron

Poly(vinyl chloride) photodecomposition films that contains melamine Schiff base (0.5% by weight) as photostabilizers upon preservation with an ultraviolet light (UV) was investigated. The photodecomposition rate constant was reduced significantly in existence of melamine Schiff base compared to PVC (blank). The Schiff base 1 was found to most effective additive in PVC photostabilization films. Photodecomposition rate content for PVC films containing Schiff base 1 was found to be 5 × 10-3 sec-1 compared to 8.7 × 10-3 sec-1 for blank film. Ultraviolet radiation aging behaviors of PVC films were studied through leaching test by measuring the degree of migration. The surface morphology of PVC films was inspected by scanning electron microscope.

Spore surface morphology of pine stem rusts of Canada as observed under a scanning electron microscope

1971 ◽  
Vol 49 (3) ◽  
pp. 371-372 ◽  
Author(s):  
Y. Hiratsuka
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Surface Morphology ◽  
Spore Surface ◽  
Endocronartium Harknessii ◽  
Scanning Electron ◽  
Shape And Size

Two types of surface markings on the aeciospores of five pine stem rusts occurring in Canada were observed under a scanning electron microscope. Spores of four species, Endocronartium harknessii (J. P. Moore) Y. Hiratsuka (= Peridermium harknessii J. P. Moore), Cronartium coleosporioides Arth. (= P. stalactiforme Arth. & Kern), C. comptoniae Arth., and C. ribicola J. C. Fisch., had annulated processes with five to seven layers and each spore had a smooth area. The smooth area was at the same level as the top layer of the processes. Each species could be distinguished by the shape and size of its processes. Spores of Cronartium comandrae Pk. had no smooth areas and had obtuse or cuspidate processes with no annulations. Different ontogenies were apparent for the two types of spore surface markings.

Small bioactive molecules as dual functional co-dopants for conducting polymers

2015 ◽  
Vol 3 (25) ◽  
pp. 5058-5069 ◽  
Author(s):  
J. A. Goding ◽  
A. D. Gilmour ◽  
P. J. Martens ◽  
L. A. Poole-Warren ◽  
R. A. Green
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Surface Morphology ◽  
Conducting Polymers ◽  
Conducting Polymer ◽  
Bioactive Molecules ◽  
Scanning Electron Microscope Image ◽  
Dual Functional ◽  
Electron Microscope Image ◽  
Scanning Electron

Scanning electron microscope image of surface morphology of conducting polymer PEDOT doped with bioactive molecules.

The Study on the Surface Morphology of Al/SnO2-Sb2O3 or SnO2-Sb2O3-MnO2/PbO2 Electrode Material

2010 ◽  
Vol 97-101 ◽  
pp. 1805-1808 ◽  
Author(s):  
Mei Cao ◽  
Zhong Cheng Guo ◽  
Xia Cui ◽  
Su Qiong He
Keyword(s):  
Thermal Decomposition ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Surface Morphology ◽  
Electroless Plating ◽  
Electrode Material ◽  
Oxide Coating ◽  
Oxide Coatings ◽  
Pbo2 Electrode ◽  
Scanning Electron

SnO2–Sb2O3 or SnO2-Sb2O3-MnO2/ PbO2 electrode on aluminum substrate were prepared by thermal decomposition、electroless plating and electrodeposition .The surface morphology of coatings were investigated by using scanning electron microscope(SEM). The results show the effects of composition of solution and thermal oxidation temperature on the microstructures of the coating were considerable. The structure of oxide coating become refined with the thermal de- composition temperature increasing. The oxide coating without Mn is coarser than those with Mn. The surface of α-PbO2 and β-PbO2 deposited on the oxide coatings without Mn prepared at 450°C are compact and even, the electrocatalyst of the electrode is optimumest.

Bio-washing of Pigment Dyed Denim with Laccases

2014 ◽  
Vol 18 (3) ◽  
pp. 35-41 ◽  
Author(s):  
M. Montazer ◽  
V. Sadeghian
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Surface Morphology ◽  
Bending Properties ◽  
Color Changes ◽  
Washing Process ◽  
Scanning Electron ◽  
Exhaustion Method

Nowadays, pigment dyeing is one of the most interesting methods that is applied to make specific designs on denim and fashionable garments. Here, in this research, the bio-washing of pigment dyed denim has been considered with laccases. The desizing and bleaching of denim samples are first carried out and they are subsequently dyed with two types of pigments (Bemacol Blue GF and Ricoprint OSD Serie Blue) through the exhaustion method. The pigment dyed samples are then washed with various laccase concentrations, with and without the use of pumice stones. Color changes, bending and wrinkle recovery are examined. Furthermore, the surface morphology of the products is verified by a scanning electron microscope (SEM) and a Projectina microscope. The samples washed with laccases and pumice stones show higher dye stripping compared with those without the use of pumice stones. The bending properties of the samples treated by pumice stones show desirable results compared with the laccases, but this caused intense damage to the samples. Also, desirable results have been achieved by using laccases in the washing process. Treatment with laccases helps to obtain brilliant samples with decreased staining on the samples with a pocket and also lowers pigment discharge in the effluent.

Production of Cu-Sn-Zn Ternary Alloy Coating via Electroplating

2017 ◽  
Vol 888 ◽  
pp. 400-403
Author(s):  
Rozainita Rosley ◽  
Suzi Salwah Jikan ◽  
Nur Azam Badarulzaman
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Surface Morphology ◽  
Ternary Alloy ◽  
Phase Structure ◽  
Alloy Coating ◽  
Complexing Agents ◽  
Carbon Substrate ◽  
X Ray ◽  
Scanning Electron

This research deals with the interest in production of Cu-Sn-Zn ternary alloy coating via electroplating on carbon substrate by using less hazardous electrolyte. A detailed study was made on the effect of different concentration of reducing and complexing agents. The surface morphology and phase structure of the deposited layers were examined by scanning electron microscope (SEM) equipped with energy dispersive x-ray spectroscopy (EDS), respectively. The results confirmed that the layers of Cu-Sn-Zn was obtained with this less hazardous electrolyte.

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