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Online since: January 2012
Authors: Sheng Hua Lv, Ming Ming Hou, Shui Li Lai
The structure of the copolymer was characterized by FTIR and NMR.
The chemical structure of the copolymer GASA was also characterized by FTIR and NMR.
The structure of the copolymer is characterized by FTIR and NMR.
Hu, Polymer Chemistry, Chemical industry press, p. 362, 2001
Lu, “The structure and action mechanism of HRP,” Chemistry of life, vol. 25, no.1, p.33-36, January 2005
Online since: October 2017
Authors: Ugis Cabulis, Mikelis Kirpluks, Vladimir Yakushin, Viesturs Zeltins
The synthesis technology of polyol from crude deciduous tree tall oil was developed, the structure of obtained polyol was analyzed using FTIR spectroscopy.
Results and Discussion The chemical structure of synthesized CTO polyols was studied using FTIR spectra.
Materials produced from rigid PUR foam do not absorb moisture from the air due to their closed cell structure.
Acknowledgment The study was financed by the Latvian State Institute of Wood Chemistry Bioeconomy grant “AtkritBiomasKM”.
Vilsone, Characterization of polyurethane networks structure and properties based on rapeseed oil derived polyol, Eur.
Online since: June 2011
Authors: Jin Zhao, Ping Ye Deng, Shun Cong Chen
The fly ash was prepared to be a new functional material in such industries like plastics and rubber, chemistry and environmental protection, which was made use of to the fillers or raw materials.
The ash consumption in the plastics and rubber industries was lower than others, while the problems in chemistry and environmental protection industries were the too much chemical waste and the secondary pollution.
The growth substrate P’s property that the absorption to the environmental free water, is originated from the inner material’s structure features.
The super absorbent resin used in this test is a kind of the complex polyelectrolyte particles with a structure of the light cross linking and network which depends on the absorbing water through the numerous hydrophilic groups and then conducting, storing and swelling by themselves through the network structure.
There are neither the network structures in the S similar to the P nor the continuous water keeping and flowing pores, because of the leak of the links between the clusters and fibers.
Online since: December 2016
Authors: Mosbah Zidani, Hichem Farh, Farida Khamouli, Adel Saoudi, L'Hadi Atoui
Effects of Cellulosic and Basic Flux on the Structure, Composition and Hardness of SMAW Welds on Steel X42 F.
It had been showed that operating parameters and flux composition directly affect the weld deposit chemistry [6, 7].
The microstructure of the base metal showed a ferritic pearlitic structure [20].
The identical microstructures of the deposited weld zones, corresponding to the flux (A, B and C) show a dendrite structure.
Furthermore, the formation of martensite structure is facilitated during the cooling of the welds. [9, 23].
Online since: December 2010
Authors: Qiang Li, Cai Xia Li, Jie Song, Bing Xu, De Xin Huang
Synthesis, Structure and Properties of Super Fine LiMn2O4 Jie Song1,a, Bing Xu 2, Dexin Huang2, Caixia Li1 and Qiang Li1,b 1Department of Chemistry, East China Normal University, Shanghai 200062, China 2Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China a 51080606013@ecnu.cn, b qli@chem.ecnu.edu.cn Keywords: mechanochemical method; LiMn2O4 Abstract.
The structure, size and morphology of LiMn2O4 were explored with X-ray diffraction and scanning electron microscopy (SEM).
The structure and electrochemical properties of as-obtained LiMn2O4 were investigated in detail.
XRD and SEM were employed to study the structure of as-obtained LiMn2O4.
Online since: January 2013
Authors: Bo Zhu, Xue Ping Gao, Yang Chen
The microvoids structure changes of the PAN fibers were characterized by synchrotron radiation SAXS.
Small-angle scattering (SAXS) is a modern method for analyzing physical structure.
After washing, fiber generated meshed aggregation structure with internal stress existence.
Synchrotron radiation SAXS technique can accurate and analysis the changes of microvoids structure of the fibers forming in the various stages; the microvoids structure change are closely related to the specific process parameters, and the microvoids structure analysis results can provide guidance for the setting of process parameters.
Industrial &Engineering Chemistry Analytical Edition Vol. 18(1946), p.172
Online since: June 2012
Authors: Xiao Song Zhang, Chuan Zhen Xin, Meng Zhen Li, Lan Li, Pei Liu
Calculation Results and Discussion The structure of basic PbS QDs EL device with the simple ITO/PbS/Al structure is illustrated in Fig. 1(a).
(a) Schematic view of the structure of PbS QDs EL device.
For the proposed PC structure in Fig. 1(c), the photonic band structure is computed with variable normalized radius r/a.
The multiple reflection from air/ITO, ITO/PC structure and PC structure/PbS QDs layer interfaces is one of limitation of the final light output of the device.
Acknowledgments The search is supported by the National Science Foundation of China (NSFC Grant Nos 60907021, 60977035, 60877029, 10904109), the Natural Science Foundation of Tianjin (Grant Nos 09JCYBJC01400 and 11JCYBJC00300) and Tianjin Key Subject for Materials Physics and Chemistry.
Online since: December 2012
Authors: Zuzana Poláčková, Jaroslav Frantík, Dagmar Juchelková, Stanislav Honus, Veronika Sassmanová
The article deals with the identification of a chemical structure of pyrolysis liquid occurring by the thermal degradation of tyre debris within the temperature interval from 500°C to 650°C and the temperature increase steps of 50°C in individual experiments and with the use of analytical methods GC/MS, FT-IR and the elementary analysis.
The measuring took place in the area of the medium infrared radiation (MIR) within the range of wave numbers 4000 – 1500 cm-1, where absorption bands of functional groups occur, and in the area 1500 – 200 cm-1, which is given by the total molecule structure.
Settle, Handbook of Instrumental Techniques for Analytical Chemistry, Prentice Hall PTR, Upper Saddle River, NJ07458 (1997), p.979, ISBN 0-13-177338-0
[10] Infrared Spectroscopy: Theory, Online edition for students of organic chemistry lab courses at the University of Colorado, Boulder, Dept of Chem and Biochem, (2002)
Roeges, A Guide to the Complete Interpretation of Infrared Spectra of Organic Structures, WILEY (1994), p. 346, ISBN 0-471-85298-8.
Online since: October 2014
Authors: Swapnilkumar S. Patil, Prafulla K. Jha
SEM studies show that, as concentration of copper increases, the porous morphology is vanished giving more dense structure.
With increase in Cu concentration in ZnO, structure got transformed towards more porous morphology with flakes of different sizes (2-2.5 m).
Structural analysis from X-ray diffraction pattern of annealed ZnO and ZnO: Cu powder confirms the hexagonal and monoclinic crystal structure of ZnO and CuO.
SEM studies show that, as concentration of copper increases the porous morphology is vanished, giving more dense structure.
West, “Fundamentals of analytical chemistry”, 2nd edition, Holt, Rinehart and Winston, New York (1980)
Online since: December 2013
Authors: Lai Zhang
Ecological Effect of Typical Plants for Releasing Oxygen and Declining Temperature in Anshun City LAI ZHANG Department of Chemistry and Bio-agronomy / Key lab of Function Material and Resource Chemistry, Anshun University , An shun 561000 Gui zhou Email: Zhanglai1977725@126.com Keywords: Anshun city , Geening plants , Releasing oxygen , Temperature declining Abstract: In the urban ecosystems , the greening as a subsystem in the beautiful urban environment, it plays an active role of maintaining urban ecological balance and sustainable development.
The results showed that the species less, structure only, species evenness low; the ability of releasing oxygen is different for different plants in different months, but the similar law is rising in June and August, declining in July and September; in August, the law of declining temperature is consistent with releasing oxygen, but the most obvious were Platanas acerifolia (0.32℃), Ligusttrum quiuoni (0.26℃), Parthenocissus trcuspidata (0.46℃) in arbors, shrubs and climbing plants.
Camphor, France wutong accounted for 57.01% of the total, other trees less, the structure is relatively single, species evenness is very low.
Visible, anshun city main road greening plants the layout of the structure is simple, Joe, irrigation, flowers and herbs combined ground cover three layer is the three-dimensional structure of greening to grow less.
Correlation between ecological effect and structure characteristics of urban green areas[J].Chinese Journal of Eco-Agriculture,Vol 16(2008),P.1469-1473 [9] Ni L., Shen S.Y., Huang P.S.