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Online since: November 2011
Authors: Ying Jun Pan, Bing Hu, Qing Fang Wang, Lei Zhou
The addition of alloy didn't change the crystal structure of hard phase and binder.
It was shown that alloying element Cr can partly replace alloying element Mo and form the(Mo,Cr,Fe)3B2 structure which is the distortion of Mo2FeB2 crystal structure.
Vol. 37 (2002), p. 417-421 [4] Ken-ichi Takagi: Journal of Solid State Chemistry.
Vol. 39(4) (1992), p.247 [6] Ken-ichi Takagi and Yuji Yamasaki: Journal of Solid State Chemistry.
Vol. 154 (2000), p. 263-268 [7] Ken-ichi Takagi: Materials Chemistry and Physics.
It was shown that alloying element Cr can partly replace alloying element Mo and form the(Mo,Cr,Fe)3B2 structure which is the distortion of Mo2FeB2 crystal structure.
Vol. 37 (2002), p. 417-421 [4] Ken-ichi Takagi: Journal of Solid State Chemistry.
Vol. 39(4) (1992), p.247 [6] Ken-ichi Takagi and Yuji Yamasaki: Journal of Solid State Chemistry.
Vol. 154 (2000), p. 263-268 [7] Ken-ichi Takagi: Materials Chemistry and Physics.
Online since: October 2012
Authors: Kang Wang, Jing Ding, Wei Long Wang, Jian Feng Lu
Introduction
Activated carbon is a carbon adsorption material with rich gap structure and huge specific surface area.
The adsorption ability of activated carbon is closely related to its gap structure, chemical composition, chemical structure, and so on.
Chemistry and Industry of Forest Products. (2010) [3] W.H.
Pang, Chemistry of Molecular Sieve and Porous Materials, (Beijing 2004) [6] F.
Chemistry & Bioengineering.(2011) [7] S.
The adsorption ability of activated carbon is closely related to its gap structure, chemical composition, chemical structure, and so on.
Chemistry and Industry of Forest Products. (2010) [3] W.H.
Pang, Chemistry of Molecular Sieve and Porous Materials, (Beijing 2004) [6] F.
Chemistry & Bioengineering.(2011) [7] S.
Online since: July 2011
Authors: Cheng Xiang Li, Liu Si Sheng, Guo Bin Zhang, Wei Wang
The structures and composition of films were characterized by XPS.
While different lasers bring different influence to film structures.
The surface structures and composition of films were characterized by XPS.
The upper results mean shortwave laser bringmore obvious change to organic structures.
Laser & Optoelectronics Progress,(1),1996,p.1 [9] Wei Wang,Chengxiang Li,Guobin Zhang,et al.Science in China Series B:Chemistry,vol.51(10), 2008,p.983 [10] Wei Wang,Chengxiang Li,Liusi Sheng,et al.Materials Review,vol.21(1),2007,p.46
While different lasers bring different influence to film structures.
The surface structures and composition of films were characterized by XPS.
The upper results mean shortwave laser bringmore obvious change to organic structures.
Laser & Optoelectronics Progress,(1),1996,p.1 [9] Wei Wang,Chengxiang Li,Guobin Zhang,et al.Science in China Series B:Chemistry,vol.51(10), 2008,p.983 [10] Wei Wang,Chengxiang Li,Liusi Sheng,et al.Materials Review,vol.21(1),2007,p.46
Online since: January 2012
Authors: Hamid Reza Rezaie, Hekmat Razavizadeh, R. Roohibakhsh
As Fig. 3(b,d) shows, the morphology of particles is platelet-like which, with increasing nickel content, this structure appeared more obviously.
Klabunde, “Nanoscale Materials in Chemistry”, 2001 [2] J.Zh.
Choi, Preparation of Fine Ni Powders from Nickel Hydrazine Complex, Materials Chemistry and Physics 97 (2006) 371–378
Tarascon, Synthesis and characterization of bimetallic Ni–Cu particles, Journal of Solid State Chemistry 172 (2003) 111–115
Kurmoo, Nuclear and Magnetic Structures and Magnetic Properties of Synthetic Brochantite, Cu4(OH)6SO4, Dalton Trans. 11 (2006), 1455–1462
Klabunde, “Nanoscale Materials in Chemistry”, 2001 [2] J.Zh.
Choi, Preparation of Fine Ni Powders from Nickel Hydrazine Complex, Materials Chemistry and Physics 97 (2006) 371–378
Tarascon, Synthesis and characterization of bimetallic Ni–Cu particles, Journal of Solid State Chemistry 172 (2003) 111–115
Kurmoo, Nuclear and Magnetic Structures and Magnetic Properties of Synthetic Brochantite, Cu4(OH)6SO4, Dalton Trans. 11 (2006), 1455–1462
Online since: September 2011
Authors: Ri Hanum Yahaya Subban, Tan Winie, Chin Han Chan
Gray, Polymer Electrolytes, The Royal Society of Chemistry, UK, 1997
Wang, PAN-PEO solid polymer electrolytes with high ionic conductivity, Materials Chemistry and Physics 89 (2005) 390-394
Meibuhr, Effect of γ-radiation on the structure and ionic conductivity of 2-(-2-methoxy-ethoxy-ethoxy)polyphosphazane + LiCF3SO3, J.
Solid State Chemistry 4 (1972) 294-310
Yamane, Characterization of chemical and solid state structures of acylated chitosans, Polymer 41 (2000) 899-906
Wang, PAN-PEO solid polymer electrolytes with high ionic conductivity, Materials Chemistry and Physics 89 (2005) 390-394
Meibuhr, Effect of γ-radiation on the structure and ionic conductivity of 2-(-2-methoxy-ethoxy-ethoxy)polyphosphazane + LiCF3SO3, J.
Solid State Chemistry 4 (1972) 294-310
Yamane, Characterization of chemical and solid state structures of acylated chitosans, Polymer 41 (2000) 899-906
Online since: August 2010
Authors: Jian Zhong Ma, Qun Na Xu, Dang Ge Gao
Casein has very film-forming properties, however, due to its structure, casein film has less
extensibility and water resistance and is easily become mildewy and crazing
[1], so the pure casein
cannot satisfy the needs of the industry.
At the same time, spiral structure of organic silicon macromolecules can give an excellent power of elasticity and flexing endurance.
However, From curves1 and 2 of modified casein resin, we find that after chemistry reaction, the stretching vibration absorption peaks of casein Ⅰ amide shifted to 1658 cm - 1 and narrowed down.
Compare curve 1, curve 2 with curve 3,results suggest that: after modification, stronger ester C = O telescopic vibration absorption peaksemerged nearby 1740cm-1, which can be confirmed: chemistry reaction did happened between esters monomers and casein.
Chemistry and Adhesion(2006),28:88-90
At the same time, spiral structure of organic silicon macromolecules can give an excellent power of elasticity and flexing endurance.
However, From curves1 and 2 of modified casein resin, we find that after chemistry reaction, the stretching vibration absorption peaks of casein Ⅰ amide shifted to 1658 cm - 1 and narrowed down.
Compare curve 1, curve 2 with curve 3,results suggest that: after modification, stronger ester C = O telescopic vibration absorption peaksemerged nearby 1740cm-1, which can be confirmed: chemistry reaction did happened between esters monomers and casein.
Chemistry and Adhesion(2006),28:88-90
Online since: January 2012
Authors: Ying Wang, Peng Liu, Xue Long Li, Jia Jun Fu
The crystal and molecular structures of them were determined by X-ray diffraction methods.
In the (a) structure, The three Br-C bond distances are in the range of 1.870(8) ~ 1.894(6) Å.
In the (b) structure, The Br-C bond distance is 1.956 (6) Å.
Pybus, “The Chemistry of Fragrances,” Eds.
Andrei, “Direct fluorination of coumarin, 6-methyl-coumarin and 7-alkoxy-coumarins,” Journal of Fluorine Chemistry,vol. 126, pp. 1377-1383, 2005.
In the (a) structure, The three Br-C bond distances are in the range of 1.870(8) ~ 1.894(6) Å.
In the (b) structure, The Br-C bond distance is 1.956 (6) Å.
Pybus, “The Chemistry of Fragrances,” Eds.
Andrei, “Direct fluorination of coumarin, 6-methyl-coumarin and 7-alkoxy-coumarins,” Journal of Fluorine Chemistry,vol. 126, pp. 1377-1383, 2005.
Online since: July 2011
Authors: Z. Mansurov, T.A. Shabanova, N.N. Mofa
Uriev: Physicochemical bases of the technology of disperse systems and materials (M.: Chemistry, 1988), p. 256
[2] Yu.
Baramboim: Mechanochemistry of high molecular compounds (M.: Chemistry, 1987), p. 384 [4] G.
Kortov: Techniques and methods of measurement of exoelectric emission (Mechanical Engineering, Sverdlovsk, 1973), p. 327 [6] S.N.Borissov et al.: Silicon elementoorganic compounds (L.: Chemistry, 1996), p. 542 [7] Z.N.
Mansurov: Magnetic sorbents obtained by mechanochemical treatment of quarts containing mixtures, Chemistry in the Interests of Sustainable Development Vol. 11 (2003), p. 755-761 [12] N.N.
Kossobudski: Metallic clusters in polymer matrixes, Successes of Chemistry.
Baramboim: Mechanochemistry of high molecular compounds (M.: Chemistry, 1987), p. 384 [4] G.
Kortov: Techniques and methods of measurement of exoelectric emission (Mechanical Engineering, Sverdlovsk, 1973), p. 327 [6] S.N.Borissov et al.: Silicon elementoorganic compounds (L.: Chemistry, 1996), p. 542 [7] Z.N.
Mansurov: Magnetic sorbents obtained by mechanochemical treatment of quarts containing mixtures, Chemistry in the Interests of Sustainable Development Vol. 11 (2003), p. 755-761 [12] N.N.
Kossobudski: Metallic clusters in polymer matrixes, Successes of Chemistry.
Online since: April 2009
Authors: Peng Cao, Brian Gabbitas, X.N. Zhang, D. L. Zhang
Literature reports have clearly indicated that
surface chemistry can manipulate osteoblast function [5], and therefore alterations in material's
surface chemistry (either by applying a bioactive coating or developing new compositions) have
been a major investigative tool to improve the performance of orthopedic implants.
Essentially only the surface portion of the implant material interacts with the surrounding bone; therefore in this study we only change the surface structure (without changing the bulk and surface chemistry of the material), using a surface mechanical attrition treatment (SMAT) technique [6].
A gradient structure was observed on the cross section with the nanometer on the very top surface, submicronic and micronic grains in the interior portion of the thickness.
Fig. 1 Optical micrographs of grain structure observed on the cross section of the SMAT treated pure titanium plate (a) on the surface of the plate, (b) in the middle of the plate, i.e. at a depth of 0.5mm below the treated surface.
[3] Rho, J.Y., Kuhn-Spering L and Zioupos P. (1998) Mechanical properties and hierarchical structure of bone, Medical Engineering and Physics 20, 92-102
Essentially only the surface portion of the implant material interacts with the surrounding bone; therefore in this study we only change the surface structure (without changing the bulk and surface chemistry of the material), using a surface mechanical attrition treatment (SMAT) technique [6].
A gradient structure was observed on the cross section with the nanometer on the very top surface, submicronic and micronic grains in the interior portion of the thickness.
Fig. 1 Optical micrographs of grain structure observed on the cross section of the SMAT treated pure titanium plate (a) on the surface of the plate, (b) in the middle of the plate, i.e. at a depth of 0.5mm below the treated surface.
[3] Rho, J.Y., Kuhn-Spering L and Zioupos P. (1998) Mechanical properties and hierarchical structure of bone, Medical Engineering and Physics 20, 92-102
Online since: February 2011
Authors: Xu Zhong Luo, Qiong Wang, Ti Feng Jiao, Jing Xin Zhou, Juan Zhou
Research on Some Novel Trigonal Schiff Base Compounds With
Aromatic Core and Different Substituted Groups
Tifeng Jiao1,2, a, Juan Zhou1, Jingxin Zhou1, Qiong Wang3, and Xuzhong Luo3
1Hebei Key Laboratory of Applied Chemistry, College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, Hebei, 066004, China
2State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, Gansu, 730000, China
3Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou, Jiangxi, 341000, China
atfjiao@ysu.edu.cn
Keywords: Trigonal Schiff Base, Functional Material, Aromatic Core, Spectral Measurement, Thermal Analysis.
UV and IR data confirmed commonly the formation of Schiff base as well as aromatic segment in molecular structures.
The synthesis of trigonal aromatic amine (abbreviated as Tri-NH) will be reported elsewhere, and its structure was confirmed by 1H NMR.
The structures of these molecules were confirmed by 1H NMR.
Chemical structures and abbreviations of trigonal amine and Schiff base compounds.
UV and IR data confirmed commonly the formation of Schiff base as well as aromatic segment in molecular structures.
The synthesis of trigonal aromatic amine (abbreviated as Tri-NH) will be reported elsewhere, and its structure was confirmed by 1H NMR.
The structures of these molecules were confirmed by 1H NMR.
Chemical structures and abbreviations of trigonal amine and Schiff base compounds.