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Online since: December 2009
Authors: Qing Fu Zhao, Xiao Wei Jiang, Shi Yuan Sun, Ming Hai Qu, Yu Zhong Wang
The structure of the
nanocomposites was characterized by scan electron microscopy (SEM).
The flame retardant performance was achieved through the formation of a relatively uniform network-structured floccule layer covering the entire sample surface without any cracks or gaps.
We can clearly find the network structure of CNTs in the matrix.
Lieber: Chemistry & Biology7 (2000) 193
[24] Yichong ZHANG and Xu WANG: International Journal of Solids and Structures, 2005, 42(20), 5399
The flame retardant performance was achieved through the formation of a relatively uniform network-structured floccule layer covering the entire sample surface without any cracks or gaps.
We can clearly find the network structure of CNTs in the matrix.
Lieber: Chemistry & Biology7 (2000) 193
[24] Yichong ZHANG and Xu WANG: International Journal of Solids and Structures, 2005, 42(20), 5399
Online since: February 2012
Authors: Meng Hua Qin, Qing Hua Xu, Jin Ba, Yang Gao
Structure and property of plant galactomannan gums
The basic unit of polysaccharide is simple monosaccharide.
Fig.1 The structure of locust bean gum and tara gum [2] Polysaccharide gums also have the rheological properties.
In order to the required characteristics, we can use enzyme to change structure of galactomannan.
Chemistry and Industry of Forest Products, Vol. 29(2009), 4, p. 121-128
Chemistry and Industry of Forest Products, Vol. 27(2007), 5, p. 44-48
Fig.1 The structure of locust bean gum and tara gum [2] Polysaccharide gums also have the rheological properties.
In order to the required characteristics, we can use enzyme to change structure of galactomannan.
Chemistry and Industry of Forest Products, Vol. 29(2009), 4, p. 121-128
Chemistry and Industry of Forest Products, Vol. 27(2007), 5, p. 44-48
Online since: April 2014
Authors: Tatiana A. Pisarenko, Galina S. Kraynova, A.M. Frolov
Specifically, media with a fractal structure make possible the multifunctional processes.
To optimize the structure and the properties of magnetic alloys, it is necessary to take into account the effect of the self-organization of a dissipative structure with fractal properties [2-5].
In addition, for planar self-similar structures the fractal dimensionality is g =D–1.
Gerasimenko A.V., Institute of Chemistry FEB RAS, for XDR measurement, as well as to Prof.
Yudin, Physics, Chemistry and Mechanics of Surfaces. 8 (1987) 117
To optimize the structure and the properties of magnetic alloys, it is necessary to take into account the effect of the self-organization of a dissipative structure with fractal properties [2-5].
In addition, for planar self-similar structures the fractal dimensionality is g =D–1.
Gerasimenko A.V., Institute of Chemistry FEB RAS, for XDR measurement, as well as to Prof.
Yudin, Physics, Chemistry and Mechanics of Surfaces. 8 (1987) 117
Online since: May 2013
Authors: Zulkhair Mansurov, Nina Mofa, Bakhtiyar Sadykov
Particles of wollastonite after MCT preserve their needle-shaped structure.
This effects the thermodynamic characteristics of the combustion process, formation of the phase composition and structure of the material.
Merzhanov: Self propagating high temperature synthesis Physical chemistry: Modern problems / Under the edition of Ya.M.
Chemistry (1983), p. 5-44
Grigoryeva: The effect of mechanical activation on structure formation during self propagating high temperature synthesis.
This effects the thermodynamic characteristics of the combustion process, formation of the phase composition and structure of the material.
Merzhanov: Self propagating high temperature synthesis Physical chemistry: Modern problems / Under the edition of Ya.M.
Chemistry (1983), p. 5-44
Grigoryeva: The effect of mechanical activation on structure formation during self propagating high temperature synthesis.
Online since: October 2009
Authors: Hiroyuki Ito, Hideo Miura, Ken Suzuki, Tatsuya Inoue
(a) Initial texture (b) Damaged texture
Figure 1 Micro texture change of Ni-base superalloy caused by creep and fatigue damages
Analytical Model for Molecular Dynamics
In the last decade, computational chemistry has made remarkable progress in the theories and
calculation methods and it has a growing role in the field of materials chemistry.
The strain dependence of atomic diffusion in Ni(111)/Al(111) interface structure was also examined.
Slip was found to occur in the both interface structures under strain.
Since strain caused dislocations and slips in the Ni(111)/Al(111) interface structure, no stress-induced anisotropic diffusion of both Al and Ni at the interface occurred.
When stress was applied to the crystal structure, the structure deforms to relieve the applied stress or the high strain energy.
The strain dependence of atomic diffusion in Ni(111)/Al(111) interface structure was also examined.
Slip was found to occur in the both interface structures under strain.
Since strain caused dislocations and slips in the Ni(111)/Al(111) interface structure, no stress-induced anisotropic diffusion of both Al and Ni at the interface occurred.
When stress was applied to the crystal structure, the structure deforms to relieve the applied stress or the high strain energy.
Online since: January 2018
Authors: Ojin Tegus, Naren Gerile, Hexig Alata, Tian Xiao, Ta Na Bao
XRD diffraction data confirms the periodic long range order/disorder structure of these europium complexes.
Fig.4 is a schematic diagram of the glassy structure of Eu(oct-ala)3 ×H2O.
Organic rare earth liquid crystal material, with a periodic long-range disorderly structure and short-range orderly structure of the optical anisotropic special materials.
Analysis of global rare earth production and consumption structure.
Progress in Chemistry, 15 (2003) 288-294
Fig.4 is a schematic diagram of the glassy structure of Eu(oct-ala)3 ×H2O.
Organic rare earth liquid crystal material, with a periodic long-range disorderly structure and short-range orderly structure of the optical anisotropic special materials.
Analysis of global rare earth production and consumption structure.
Progress in Chemistry, 15 (2003) 288-294
Online since: March 2024
Authors: Muhammad Dikdik Gumelar, Mohamad Soleh Iskandar, Suppachai Sattayanurak, Sri Rahayu, Akhmad Amry, Lies Agustine Wisojodharmo, Wahyu Tri Utami, Dewi Kusuma Arti, Mahendra Anggaravidya, Idvan Idvan, Herri Susanto, Indriasari Indriasari, Ade Sholeh Hidayat, Riastuti Fidyaningsih
Pocius (Eds.), Adhesion Science and Engineering 2: Surfaces, Chemistry, and Applications, Elsevier Science B.V., Amsterdam, The Netherlands, 2002, pp. 573-675
Greene, Solubility of sulfur in rubber, Journal of Industrial & Engineering Chemistry 14(1922) 319-320
Auerbach, et al., A diffusivity approach for studying polymer structure, Journal of Polymer Science 1958) 129-150
Amerongen, Diffusion in elastomers, Rubber Chemistry and Technology 37(1964) 1065-1152
Small, Some factors affecting the solubility of polymers, Journal of Applied Chemistry 3(1953) 71
Greene, Solubility of sulfur in rubber, Journal of Industrial & Engineering Chemistry 14(1922) 319-320
Auerbach, et al., A diffusivity approach for studying polymer structure, Journal of Polymer Science 1958) 129-150
Amerongen, Diffusion in elastomers, Rubber Chemistry and Technology 37(1964) 1065-1152
Small, Some factors affecting the solubility of polymers, Journal of Applied Chemistry 3(1953) 71
Online since: October 2015
Authors: Artem S. Bogomyakov, Yuriy A. Zaharov, Valeriy M. Pugachev, Kseniya A. Datiy, Anna N. Popova, Anastasiya S. Valnyukova, Vadim G. Dodonov
Analysis of all images allows us to conclude that in general the particles have a complex layered structure.
The sequence of reduction depends on the ratio of the oxidation-reduction potentials (ORP) of the metal hydroxides and its structure (mutual mixed structure or not), moreover formation of intermediates in the process, for example, by complexation, also affects on it.
Shape-Controlled Synthesis of Metal Nanocrystals: Simple Chemistry Meets Complex Physics, Angew Chem Int Ed Engl.; 48(1) (2009) 60-103
Moscow: Chemistry. (2000) 672
Popova, Chemical synthesis, structure and magnetic properties of nanocrystalline Fe-Co alloys.
The sequence of reduction depends on the ratio of the oxidation-reduction potentials (ORP) of the metal hydroxides and its structure (mutual mixed structure or not), moreover formation of intermediates in the process, for example, by complexation, also affects on it.
Shape-Controlled Synthesis of Metal Nanocrystals: Simple Chemistry Meets Complex Physics, Angew Chem Int Ed Engl.; 48(1) (2009) 60-103
Moscow: Chemistry. (2000) 672
Popova, Chemical synthesis, structure and magnetic properties of nanocrystalline Fe-Co alloys.
Online since: September 2007
Authors: T. Dikić, Lj. Korugić-Karasz, R. Radičević, J. Budinski-Simendić, M. Špírková, Jan Šomvarsky, K. Dušek, M. Ilavsky
The equilibrium swelling degree can
also be affected by possibly existing physical crosslinks, such as crystallites or entanglements, or
strongly associated structures.
The reason for imperfect network structures are the exponentially long times required towards the end of the synthesis to pair the remaining unsaturated chain ends.
Table 1 Input data and calculated data of calculation procedure for network structure estimation based on the theory of branching processes with cascade substitution.
Flory: Principles of polymer chemistry (Cornell University Press, Ithaca NY1953)
Dusek: Proceedings, "Physical Chemistry 2004", Belgrade, p. 607
The reason for imperfect network structures are the exponentially long times required towards the end of the synthesis to pair the remaining unsaturated chain ends.
Table 1 Input data and calculated data of calculation procedure for network structure estimation based on the theory of branching processes with cascade substitution.
Flory: Principles of polymer chemistry (Cornell University Press, Ithaca NY1953)
Dusek: Proceedings, "Physical Chemistry 2004", Belgrade, p. 607
Online since: July 2017
Authors: Nivaldo Cabral Kuhnen, Humberto Gracher Riella, Leticya Lais Coelho, Larissa M.F. Speranzini, Jarina Costa Moreira, Rozineide A. Antunes Boca Santa, Domingos Lusitâneo Pier Macuvele
The geopolymeric materials are structures formed by amorphous aluminosilicates activation and an alkaline medium with an elevated pH [1].
The thermal treatment in specific temperatures activates the material modifying the crystalline structure to an amorphous one, due to the stored energy [2].
In the Figs. 1b and 1c, it is possible to visualize the transformation that occurred, referent to the material structural change and formation of a new structure characteristic from the geopolymerization in the region between about 2θ = 20° and 30°, that are characteristic of geopolimeryc structures [9,10].
The pore control is a variable that needs more attention, to prevent water penetration in the matrix [11] that may weaken the structure.
Davidovits: Geopolymer Chemistry e Application. second ed., Institute Geopolymere, Saint-Quentin, France, 2008, pp. 9
The thermal treatment in specific temperatures activates the material modifying the crystalline structure to an amorphous one, due to the stored energy [2].
In the Figs. 1b and 1c, it is possible to visualize the transformation that occurred, referent to the material structural change and formation of a new structure characteristic from the geopolymerization in the region between about 2θ = 20° and 30°, that are characteristic of geopolimeryc structures [9,10].
The pore control is a variable that needs more attention, to prevent water penetration in the matrix [11] that may weaken the structure.
Davidovits: Geopolymer Chemistry e Application. second ed., Institute Geopolymere, Saint-Quentin, France, 2008, pp. 9