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Online since: October 2018
Authors: Louise Asueva, Madina A. Nasurova, Zinaida S. Khasbulatova, Gennady B. Shustov
Therefore, an important direction in polymer chemistry is the creation of new structural materials with high operational and technological properties.
The determination of the influence of the chemical structure and composition on the deformation-strength properties of polyether ketones.
An important direction in polymer chemistry is the creation of new structural materials with higher operational and technological properties.
The composition and structure of the synthesized polyetherketone block structure confirmed by various methods.
For complete confirmation of the composition and structure of polyether ketones, elemental analysis of polymers has been performed.
Online since: January 2021
Authors: Alexey Ogoltcov, Artem V. Mitrofanov
It was shown in [8] that the nucleation of cracks occurs in places with a harder structure.
According to the results of calculations and analysis of changes in the structure and properties, it was decided: 1.
Table 5 - The results of calculations of the structure parameters and properties for a new chemical composition with altered temperature-strain regimes Case Chemistry Тsa, [℃] Тfa, [℃] Df, [µ] Db, [µ] F, [%] P, [%] GB, [%] AF, [%] σy, [MPa] σs, [MPa] σy/σs δ, [%] 15 New, new rolling regimes 600 590 0.4 30 - - 73.5 26.5 525 656 0.80 27 Improving the structure and properties was made possible by increasing the residual deformation in the last active stand by 17% (from 0.3 to 0.35 rel. units) and by the time of coiling the coil by 67%, while the size of the austenite grain remained almost unchanged (from 0.09 to 0.15 rel. units).
The steel structure in this case is a mixture of acicular ferrite and granular bainite (Fig. 2).
The low carbon content in turn made it possible to exclude the formation of segregation strips and dendritic segregation sites with a martensite structure, which made it possible to exclude from the structure sites with a high level of stress at the interface of different phases.
Online since: July 2004
Authors: Sanjay Mathur, Hao Shen, Michael Veith
The fact that the extended solid-state structure is derived from molecular building blocks substantiates the inherent advantages of chemical methods due to controlled and defined reaction chemistry.
For example, Ba and Zr(Ti) alkoxides can combine in different ways to produce mixed-metal Ba-Zr(Ti) clusters with different structures and metal ratios [5].
Orthoferrite GdFeO3 Rare earth (RE) - iron orthoferrites, REFeO3, are of substantial interest due to their interesting structure and properties.
The molecular structure of the compound exhibits that the Gd:Fe ratio (1:1) is appropriate for the synthesis of Gd-Fe orthoferrite.
The examples shown in this article illustrate that predefined metal stoichiometry and reaction chemistry of the precursor enforces a molecular level homogeneity in the obtained materials.
Online since: May 2011
Authors: Yi Mei Tang, Xiao Ling Hu, Jin Yang Yu, Liang Liang
The structure of chiral ionic liquid 1-H-3-methyl-imidazole-(S)-(-)-2-Chloro-salt was shown in Figure 1.
Structure of the chiral ionic liquids were analyzed by FT-IR spectrometer, Using the method of KBr pellet.
In this article, the chiral ionic liquids' molecule structure were optimized by the method of DFT quantum chemistry (Density Functional Theory, DFT) B3PW91 /6-311G (d, p).
The anion and cation have the asymmetric structure, accumulation of ions can not be close.
Its structure was characterized by FT-IR, 1H-NMR spectra and quantum chemical methods to determine the molecular structure and reaction type.
Online since: September 2013
Authors: Xin Hua Li, Li Li Zhang, Xiao Na Li
Structures of proteins are spread and corn starch is released.
The structure of corn protein was destroyed to release corn starch.
Suarez.Cereal Chemistry.p.76(5):783-787(1999)
Food Chemistry.wol.77 .p.133–137( 2002) [18] M.
Food chemistry(In Chinese).
Online since: March 2022
Authors: Faiza Hassan, Hina Kousar, Faisal Mehmood, Qamar Uz Zaman
The formation of deoxynivalenol and fusarium graminearum can be reduced in wheat grains by ZnO NPs without any damage to grain structure [10].
The morphological structure of nanoparticles was examined by SEM (NOVA NANOSEM 450, FEI). 2.2.
Characterization of ZnO NPs The morphological structure and diameter of the ZnO NPs were determined by using scanning electron microscopy (SEM).
Their morphological structure was found elliptical and diameter was measured by scanning electron microscopy as 10.6 to 10.7nm.
Lead, Nanomaterials in the environment: behavior, fate, bioavailability, and effects, Environmental Toxicology and Chemistry: An International Journal, 27 (2008) 1825-1851
Online since: November 2010
Authors: Pei Xin Zhang, Xiang Zhong Ren, Dong Yun Zhang, Li Zhang, Zhen Zhen Fan, Kun Liu
School of Chemistry and Chemical Engineering, Shenzhen University, Shenzhen 518060, P.R.
School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, P.R.
Xu: Chemistry technology Vol. 65(2007), p. 147–151 [6] T.
Sun: Materials Chemistry and Physics Vol. 110(2008), p. 222–227 [18] L.
Su: Chinese journal of inorganic chemistry Vol. 23(2007), p. 466–472 [20] K.
Online since: September 2013
Authors: Zhi Quan Zhou, Zhan Feng Zhao, Dong Zhang
We will introduce the structure of the multidimensional platform first, and then introduce the design of the hardware circuit.
The mechanical structure of the multidimensional platform.
The multidimensional platform is designed by using the solid Works software, whose basic structure is shown in figure 2.
Analytical Chemistry 2007, 8(8);1233~1240
Surface desorption atmospheric pressure chemical ionization mechanism and in the food and pharmaceutical samples Analysis Research [D].Nanchang Donghua Polytechnic University Institute of Analytical Chemistry,2012
Online since: May 2011
Authors: Xiao Yu Zheng, Jin Cheng Wang, Ke Yang
With the gradual increasing research on the structure and nature of montmorillonite (MMT), people have now focused on the application of MMT in polymers.
Compared with linear macromolecules, hyperbranched macromolecules had internal three-dimensional porous structures, and there were a large number of end groups on their surface.
The structure of hyperbranched polymers was shown in Fig. 1.
Fig. 1 The structure of hyperbrached polymers.
Jin: Macromolecular Chemistry and Physics, Vol 206 (2005), p. 2512
Online since: January 2014
Authors: Kan She Li, Chuang Qian Chen, Jie Kang, Jin Li
Study on Synthesis of Complexes of Maleamic Acid and Lanthanum Ion Chuangqian Chena, Kanshe Lib, Jie Kangc and Jin Lid College of Chemistry and Chemical Engineering, Xi’an University of Science and Technology, Xi’an 710054, PR China achenchuangqian@sina.com, blikanshe@163.com, ckxr-2510@163.com, d18706373@qq.com Keywords: complexes; maleamic acid; lanthanum ion; thermal stability; PVC Abstract.
Ligand in the structure has high stability, but also in the open-loop chain subsistent on the introduction of other sites and increase coordination with ways to build it to the class of compounds with various forms of the body, the new structure by the scientists’ attention [1].
Firstly, the structure is unstable Cl from PVC started to decompose to release HCl, and the HCl catalytic decomposition of PVC [2].
Nearly years, the rare earth stabilizer is a new non-toxic stabilizers development, due to rare earth elements with unique electron shell structure and our abundant reserves.
Acknowledgements All experiments were performed at the College of Chemistry and Chemical Engineering, Xi’an University of Science and Technology.