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Online since: January 2012
Authors: Yan Liu, Li Ming Feng, Xue Wei
The SEM shows that the composite plating is consist of small spherical particles forming network structure, with status of porous clusters.
The specific porous structure of composite plating and a good charge/discharge performance of graphite powder improve the electrochemical properties of composite anode materials.
The lithium-ion can embed and prolapse freely because of its layered structure and so have high efficiency of charge/discharge, good reversibility, and superior cycling performance.
Analysis of composite plating structure.
CHINESE JOURNAL OF INORGANIC CHEMISTRY. 2009, 25(1): 7-12 [10] Ekaterina Popova, Yanko Dimitriev.
Online since: August 2011
Authors: Ru Wang, Pei Ming Wang
The two successive network structures interweave together and perfect organic-inorganic interpenetrating structures are formed (Fig. 5 (b)).
The weak structure at the interface decreases the mechanical properties and durability.
As a result, the weak interface structures are modified and the interface strength is improved.
Interpenetrating network structure of SBR and cement paste is formed and the interface structure is improved.
Yuan: Application of Polymer in Concrete, Chemistry and Industry Publishing Company, Beijing (2003)
Online since: April 2021
Authors: S.M. Ali Ridha, S. Mahmood Hussein, T.H. Mubarak, Jasim Al-Zanganawee
The structure and magnetic properties of the synthesis Mn1-xZnxFe2O4 with x=0-0.5 by step 0.1were studied.
Ferric Chloride ІІІ (FeCl3) 98%, Manganese (II) chloride tetrahydrate (MnCl2.4H2O) 98% AlPHA chemica, Zinc (II) chloride anhydrous ZnCl298%, Sodium Hydroxide (NaOH) 98% ROMIL pure chemistry, Tetramethylammonium hydroxide (C4H13NO) Merck KGaA.
It can conclude that Mn2+and Zn2+ ions are well-substituted in the ferrite structure.
Zabihi, Preparation and magnetic properties of nano size nickel ferrite particles using hydrothermal method, Chemistry Central Journal. 6 (2012) 1-6. ,[] S.
X-ray analysis showed that the presence undesired other structure in the composition before heat treatment.
Online since: October 2010
Authors: John M. Colwell, Javaid H. Khan, Geoffrey Will, Kathryn E. Fairfull-Smith, Steven E. Bottle, Graeme A. George, Antony Trueman
Introduction Aircraft coatings are designed to primarily offer a corrosion resistant barrier to the underlying metallic structure.
As a coating degrades, due to environmental exposure, the barrier properties change as a result of chemical changes within the coating's structure that ultimately lead to mechanical breakdown.
These spectral changes correspond to changes in the structure of the crosslinks (urea and urethane groups) within the polyurethane network.
Figure 9: Structures of BPETMIOA and the fluorescent compound on which it is based, BPEA.
It is envisaged that these techniques will be able to detect the early signs of coating breakdown before the underlying metallic structure is exposed to the environment.
Online since: February 2015
Authors: Pei Ye, Tao Jiang, Xiu Mei Zhang
Braking force determined by the brake structure parameter, is proportional to the brake pedal force.
Design of Network Structure.
The Journal of Automatic Chemistry.(2002),p.831-834 [5]Gissinger G L, Menard C, Constans A.
The Journal of Automatic Chemistry.(2004), p.88-93 [8] Hui Yang, Jin Yan, Kunpeng Zhang.
Moran, Nonlinear Finite Elements for Continua and Structures, Wiley, New York, 2000 [19]M.
Online since: January 2011
Authors: Jun Sun, Kai Tao Wang, Chuan Xiang Qin, Li Xing Dai, Jian Jun Wang
The structure of pre-oxidized nanofibers was investigated by scanning electron microscopy (SEM) and FT-IR.
The related structure and properties of the copolymer and the nanofibers were investigeted.
The changes of surface morphology were detected by SEM and the changes of internal structure were characterized by FT-IR.
Grassie and McGuchan[17] assigned the 1600 cm-1 band to the conjugation of –C=N- or –C=C- structures.
After the partly cyclization between intramolecular and intermolecular during the heat-treated process, the original super-molecular structure which was messy and helicoidal would transform into a planar ladder-shaped and heat stable structure.
Online since: August 2020
Authors: Atiek Rostika Noviyanti, Azhari Yusuf, Risdiana Risdiana, Norman Maulana Muhammad
The structure and crystallinity of HA were determined by XRD and FTIR.
It is easy to prepare and easy to control the structure and morphology of HA.
All HA crystal structures have a hexagonal structure with a P 63 /m space group.
It can be seen that HA has an rectangular tubular structure.
The eggshel; structure, composition and mineralization, Bioscience 17 (2012) 1266–1280
Online since: December 2011
Authors: Yu Han Wu, Kuo Chuang Chiu
It may be used to investigate the dynamics of bound or mobile charge at interfacial regions, either in bulk or film structure, of any kind of solid or liquid materials included ionic, semiconducting, mixed electronic-ionic, and even insulating entities.
At an interface, physical factors, such as crystallographic structure, mechanical properties, compositional chemistry and in particular charging and polarization reduce considerably the overall electrical conductivity of a system.
The Impedance spectroscopy test sample prepared in the form of sandwich structure with the first layer being Au ground electrode is 300nm, the second layer LiXZn1-XO2 films was having dimensions of 12mm in diameter and 400~540nm in thickness and top layer being an Au electrode with dimensions of 10 mm diameter and 300 nm thick.
The electrical resistivity of the deposited films varies in the range of 0.4 to 20.4 Ω-cm, the Hall mobility, 1.02 to 1.93cm2 V-1-s-1, and the carrier concentration, 1017 to 1018 cm-3. 3.2 Impedance analysis Since the dielectric properties of semiconductor ZnO materials strongly depend on intra- and inter-grain effects, Impedance is used to study the structure and chemical composition of grains and grain boundaries in Li doped ZnO materials.
Online since: April 2015
Authors: N.P. Shapkin, V.I. Razov, I.G. Khalʻchenko, V.I. Mayorov, A.L. Shkuratov, V.O. Trukhin, V.V. Kotochentsev
Modified Vermiculites Study by Various Physicochemical Methods N.P.Shapkin1, a, V.I.Razov2, b, I.G.Khalchenko1, V.I.Mayorov1, A.L.Shkuratov1, V.O.Trukhin2, and c V.V.Kotochentsev2 1Department of the non-organic Chemistry, FEFU, Oktjabrskaja St. 27, 690041, Vladivostok, Russian Federation 2 Department of theoretical and experimental physics, FEFU, Suhanova St. 8, 690041, Vladivostok, Russian Federation a shapkin.np@dvfu.ru, b razov.viv@yandex.ru, c slavatruhin@gmail.com, Keywords: Vermiculite, Chitosan, Positron annihilation lifetime spectroscopy (PALS), Density, Dye adsorption, Nitrogen adsorption, Porometry.
Table 5 Characteristics of vermiculite samples treated by 20% (sample №4) and 36.5 % (sample №5) hydrochloric acid Sample Acid concentration, % Sorption Emax, mg/g Micropore size S, g/m2 Micropore volume V, g/m3 Density ρ, g/sm3 Specific volume, Å3 4 20.0 166.0 3.48 0.27 1.235 263.0 5 36.5 254.0 9.82 0.37 1.373 327.0 The data in Table 5 also confirm the hypothesis about the destruction of the vermiculite crystal structure.
X-ray analysis shows that the crystal structure (Fig. 1a) becomes amorphous (Fig. 1b).
The structure of the modified samples becomes more loose.
Therefore, the extensive destruction of the layered structure of Kovdor deposit vermiculite results in obtaining more efficient sorbents while sorption of sorbates of original nature.
Online since: January 2012
Authors: Jin Yan Liu, Yong Juan Liao, Hai Chao Li
Conductomery Properties of Mixed Reverse Micelles with Amphiphilic Ionic Liquids LIU Jin-Yan1, LIAO Yong-juan1 , LI Hai-Chao2 1College of Chemistry and Chemical Engineering Inner Mongolia University of Science & Technology, Baotou 014010, China 2Department of Material Science and Technology Northeast Forestry University , Harbin 150040,China {liujinyan2007 & liaoyongjuan0815}@163.com, li haichao73@126.com Keywords: Reverse micelles, Amphiphilic ionic liquids, Conductomery ,Cosurfactant.
Finally, the versatile structures of ionic liquids provide an amplitude platform for exploring the hydrophilic-lipophilic equilibrium in ionic liquid reverse micelles, which is a key for optimizing the partitioning behaviors in microemulsions.
Appearance of percolation in conductance in reverse micellar systems can be assumed to be a transition from a W/O droplet like structure to a bicontinuous or connected clusters of droplet like microstructure, which may cause the emulsification failure and phase separation.
As special structure of DomimBF4, the properties of reverse micelle were different from conventional surfactant.
Compositions and microscopic structures of microemulsions in the single-phase domain.J.Phys.Chem. 1986,90,5835-41.