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Online since: June 2019
Authors: Yuriy A. Shevchenko, Egor V. Vasiliev, Alexander V. Perzhu, Vitaliy Yu. Kapitan
We present the simulation results of magnetic 2D and 3D structures with direct (for both of them) and Dzyaloshinskii-Moriya (DMI) (for 2D lattice) interactions in the frame of the Heisenberg model.
The computer logic based on nanoscale magnetic structures will determine in the longterm the future of computer technology, for the development of which will be used collective magnetic phenomena in the next generation information medium.
Dzyaloshinsky, A thermodynamic theory of "weak" ferromagnetism of antiferromagnetics, Journal of Physics and Chemistry of Solids 4 (4) (1958) 241-255
Nefedev, Labyrinth domain structure in the models with long-range interaction, Journal of Nano- and Electronic Physics 6 (3) (2014) 03005-1
Online since: March 2014
Authors: Xiang Tao, Mei Jie Sun, Na Li, Lai Shun Shi
Synthesis of Lignin Amine Asphalt Emulsifier and Its Investigation by Online FTIR Spectrophotometry Xiang Tao, Laishun Shia, Meijie Sun, Na Li School of Chemistry and Chemical Engineering, Shandong University, Jinan 250061, China aLSHUNSH@sdu.edu.cn Keywords: Asphalt, Emulsifier, Lignin, Synthesis, Online FTIR Abstract.
The structure of the emulsifier was identified by FTIR.
Therefore, the FTIR spectrum agrees with the chemical structure of the target product.
The C6 position is activated by the phenolic hydroxyl group in the lignin structure.
Online since: August 2011
Authors: Zheng Yu Zhang, Hong Xu, Chun Ling Zheng
By mixing a number of organic solvents in the dye bath, we can improve the structure of fibers and its deep-dyed.
K/S values of dyed polyacrylonitrile fabric according to the different kinds of the used solvents Effect of Organic solvent concentration and pH value Following figures show the K/S values of polyacrylonitrile fabrics dyed with 5g/l of three cationic dyes at various concentrations of organic solvents using infrared heating.As we know, polyacrylonitrile fiber shows concrete molecular structure; well developed crystalline region, narrow voids, hydrophobic surfaces, and so on.
Organic solvents could descend the dyeing temperature with cationic dye up to about 90℃ by loosening the fiber structure.
Geoffrey, The Chemistry and Application of Dyes, New York and London, 1990, 165–166 (Chapter 5)
Online since: April 2011
Authors: Niculae Ene, Mircea Olteanu, Iulia Mirela Britchi, Petru Nita
Diffusion Layers with Ti and Ti+Al Formed on 316L Austenitic Steel by a Pack Cementation Procedure Iulia-Mirela Britchi1, a, Mircea Olteanu1, Niculae Ene1 and Petru Nita2 1Romanian Academy, Institute of Physical Chemistry “Ilie Murgulescu”, Splaiul Independentei, 202, Bucharest, ROMANIA 2METAV – Research and Development, C.
All diffusion coatings, in the Ti – 316L and Ti+Al – 316L couples are formed of two layers having different structures and compositions.
Chromium has also the disadvantage of its tendency to stabilize the weaker phase of the steel, ferrite with body-centered cubic structure, in prejudice to the stronger phase, austenite with a face-centered cubic structure.
Online since: November 2015
Authors: Ji Ping Wang, Tao Chen, Xiao Xiao Wang
Degradation of Synthetic Reactive Dye Wastewater Based onAmine-Functionalized Polyacrylonitrile Fiber Xiaoxiao Wang1,a, Tao Chen1,2,3,b*, Jiping Wang1,2,3,c 1Eco-Dyeing and Finishing Engineering Research Center, Ministry of Education; Zhejiang Sci-Tech University, Hangzhou 310018, PR China 2Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Ministry of Education; Zhejiang Sci-Tech University, Hangzhou 310018, PR China 3National Base for International Science and Technology Cooperation in Textiles and Consumer-Goods Chemistry; Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China a454428290@qq.com, btao.chen@zstu.edu.cn, cjipingwanghz@gmail.com Keywords: Modified PANFs, Reactive dyes, Catalysis, Degradation.
The chemical structures of modified PANFs were verified by Fourier transform infrared spectroscopy (FT-IR).
Fig. 1 Molecular structure of Reactive Red 195 Apparatus and instruments.
However, a higher percentum of weight gain would significantly weaken the strength of the PANF, which may be contributed to the destruction of the inner structure of PAN fiber.
Online since: October 2008
Authors: Luis Maria Esquivias Fedriani, Nicolás de la Rosa-Fox, Victor Morales-Flórez, Manuel Piñero
Applications of ultrasound to materials chemistry are found in all of these categories [12].
The center of the hot spot is where the primary chemistry involved in atomic and radical recombination takes place [33].
Adopting the sonosol liquid stage at the early stages of the process also favours the formation of nanocrystals with uniformity in composition, shape, size, internal structure and surface chemistry, which are essential characteristics for designing and controlling the behaviour of materials.
Mackenzie, in "Better Ceramics through Chemistry VII: Organic-Inorganic Hybrid Materials", Eds. by B.K.
International Journal of Solids and Structures 39 (2002) 4605-4614 [61] H.
Online since: July 2015
Authors: Han Wen Cheng, Ching Tsung Yu
SEM images show the layered structure of the Mg–Al and Mg–Cu–Al sorbents.
Crystalline analysis indicated lamella structure accompanied with metal oxides within materials.
SEM images show the layered structure of the Mg–Al–CO3 and (Mg3−x, Cux)–Al–CO3 sorbents.
The Mg–Al–CO3 LDH grains show more pronounced agglomeration and lamellar structure than (Mg3−x, Cux)–Al–CO3.
SEM and XRD results showed that the metal oxides in the carbonate sorbents result in lamellar structures.
Online since: August 2011
Authors: Wen Jiao Xu, Shu Yu Lu
The influence of modified and non-modified c-EMC powder on structure and properties of the composites were analyzed by mechanical tests, vicat softening point test (VST) and scanning electron microscopy (SEM).
However, recycling this residue has been difficult because c-EMC has the crosslinked structure which makes remolding impossible, as compared to thermoplastics.
Effect of the addition of γ-aminopropyltriethoxysilane (KH-550) as a coupling agent on mechanical and thermal properties of the composites are investigated Meanwhile morphology structure of the tensile fracture is observed by scanning electron microscopy (SEM) to further verify the improvement of interfacial adhesion in the resulting modified composites.
Vol. 19(2003), p. 2 [6] Wenjiao Xu and Shuyu Lu, in: Proceedings of the 2010 IEEE International Conference on Chemistry and Chemical Engineering, Kyoto, August 2010(IEEE Operations Center, Piscataway, 2010), p.24 [7] Guibin Wang: UPVC Products and Processing (Chemical Industry Press, Beijing 2008).
Online since: April 2016
Authors: Jia Wang, Li Juan Sun
Development of A Temperature and Pressure-Controlled Corrosion Test Vessel Li-Juan SUN1,2,a , Jia Wang1,b 1College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, P.
Shell structure, material and design are introduced.
Table 1 Performance comparison of PPR and other materials Material galvanized steel PVC aluminum-plastic PPR Scaling and rusting yes no no No Dissoluble ions pollution worse little Cl- ion good good Insulation performance worse good good good Thermo-resistance yes no no yes Pressure-proof performance excellent worse good good Connecting method welding bonding extrusion fusing Recovery and recycling easy easy difficult easy Structure and Theory of CTV.
The design of temperature-controlled and pressure-controlled CTV adopts PPR pipe material as main structure material.
Online since: January 2009
Authors: M.S. Aida, H. Moualkia, S. Hariech
Structural analysis revealed that the films showed cubic structure, and the crystallite size decreased at a higher deposition temperature.
CBD-CdS films show three diffraction peaks at 26.6, 44.3, 52.3° (2 θ) which are associated with (111), (220) and (311) reflections of the cubic CdS structure [16, 17].
(iV) The obtained films have a cubic crystal structure.
Singh, Materials chemistry and physics 93 (2005) 368-375