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Online since: February 2008
Authors: Xiao Ping Liang, Hua Wu Liu, Zhi Li Zhong, Shao Bo Xin
It is possible to use these yarns for production of planar or 3D textile structures for composites, special knitted fabrics and also as the sewing threads.
The dilapidation structure of the composite with different resin content was shown in Fig.4.
The product with 20% resin addition contains a little more fiber thrums as shown in Fig.4.a, and the product with 40% resin content addition has a densifying structure and there has been a few fiber thrums in its surface.
Chen and Sh.P.Liu: Epoxy Resin (Chemistry Industry, Beijing, PRC, 1999)
Online since: February 2008
Authors: Pei Bian, Dong Ying Ju, Da Ling Lu, Hong He, Ge Letu Qing
Magnetite Nanoparticles Surface Coating SiO2 and Magnetic Properties Evaluation Dong-Ying JU 1,a, Pei Bian 2,b, Ge-Letu Qing 3,c Daling Lu4,d and Hong He5,e 1 Faculty of Engineering, Saitama Institute of Technology, Fukaya, Fusaiji 1690, Saitama, 369-0293, Japan 2 Advanced Research Center, Saitama Institute of Technology, Fukaya, Fusaiji 1690, Saitama, 369-0293, Japan 3 Graduate School of Saitama Institute of Technology, Fukaya, Fusaiji 1690, Saitama, 369-0293, Japan 4 Chemical Resources Laboratory, Tokyo Institute of Technology, 4259-R1-9 Nagatsuta, Midori-ku, Yokohama, 226-8503, Japan 5 State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China a dyju@sit.ac.jp, b bianpei@sit.ac.jp, c b6012sus@sit.ac.jp, d ludaling@res.titech.ac.jp, e honghe@rcees.ac.cn Keywords: Magnetite nanoparticles, Surface coating, Magnetic fluid, Magnetic
On evaluation results of the magnetic properties, crystal structure and microstructure, the optimum fabrication conditions are determined.
Transmission Electron Microscopy - TEM (JEOL, JEM2010F) and Energy Dispersive X-ray Spectroscopy (EDS) ware also employed to evaluate the magnetite nanoparticle sizes and crystal structure depending on Eq. (5).
Dependent of XRD evaluation for crystal structure of nanoparticles, the size of nanoparticles was about 8 nm determined by Eq. (4).
Online since: November 2011
Authors: Gang Liu, Wei Jun Liu, Wei Ping Wang, Cong Bin Fan
Synthesis and Photochromism Properties of a Novel Hybrid Diarylethene Weijun Liu1, Weiping Wang2, Congbin Fan1, Gang Liu1* 1Jiangxi Key Lab of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, China 2Institute of Fishery in Jiangxi Province, Nanchang 330039, P.R.China liugang0926@163.com Keywords: Photochromism; Diarylethene; Electrochemistry.
The photochromic process of diarylethenes is based on a reversible transformation between the open-ring isomer with a hexatriene structure and the closed-ring isomer with a cyclohexadiene structure, according to the Woodward-Hoffmann rule [7].
The structure of compound 1a was confirmed by 1H NMR. 1H NMR (400 MHz,CDCl3): δ (ppm) 1.95 (s, 3H, CH3), 1.98 (s, 3H, CH3), 3.84 (s, 3H, CH3), 6.91 (s, 1H, -thienyl), 6.93 (s, 1H, -thienyl), 7.18 (s, 1H, -phenyl), 7.36 (s, 1H, -phenyl), 7.47 (d, 2H, J = 2.0 Hz, -phenyl), 7.50 (d, 1H, J = 8.0 Hz, -phenyl), 7.55 (t, 1H, -phenyl), 7.72 (d, 1H, J = 7.6 Hz, -phenyl), 7.77 (d, 1H, -phenyl),.
Online since: August 2013
Authors: Yu Nan Gao, Peng Cong, Xin Fu, Rong Xin Zhang, Xiang Yu Tang
Fig.1 Structure of chitosan unit This paper has forcused the study on the Mn(II) removal by immobilizing dominant bacteria on the surface of chitosan cross-linked GAC (CCG) beads.
The wet chitosan gel beads were extensively rinsed with distilled water to remove water from the pore structure[5].
A.Effects of activated carbon surface chemistry and pore structure on the adsorption of organic contaminants from aqueous solution[J].Carbon. 2002. 40(12):2085-2100
Online since: March 2006
Authors: Tien Shou Lei, Wen Shiung Chang, Shyen Yang Dong
Introduction The solidification of commercial ductile iron is a rather complicated procedure, and the solidified microstructure of ductile iron depends on many factors such as cooling rate, iron chemistry and foundry practices.
The chemical analysis of these structures with an EPMA of JEOL Super probe JXA-8600SX is shown in Table 2.
These compounds could thus be carbides with M3C type structure or cementite structure.
Table 2 Chemical analysis at various locations and structures of casting iron B.
This structure only occupies a small area and is located between carbides; from its features this structure looks more like the ausferrite structure resulting from a transformation of austempering during a continuous cooling stage [4].
Online since: October 2011
Authors: Jing Yu Ran, Liu Jie Zhao, Wei Feng Tu, Li Zhang
Generally, due to the small structure of micro-reactor, a very short residence time for fuel can be observed and which leads to the problem of low reaction efficiency.
This paper mainly revolves around a micro-reactor which the residence time of fuel gas in millimeter scale can be prolonged through the structure of swirl channel.
Zhao: Progress In Chemistry, Vol. 15, No.2(2007), p:141
Hessel, Microreactor: New Technologies for Modern Chemistry, G.
Xu: Journal of fuel chemistry and technology, Vol. 4, No.12(1984), p: 316.
Online since: January 2005
Authors: Sung Jin Kim, Joung Han Yim, Se Hun Ahn, Yoo Kyung Lee, Kyu Jin Park, Hong Kum Lee
Emulsions are already widely used such areas as foodstuff technology, pharmacy, agro-chemistry, paints, cosmetics, coatings, and adhesives [1].
Based on its infrared spectrum, the chemical group characteristics of p-11568 were analyzed as follows: -OH stretching at ~3,400 cm-1, C-H stretching at ~2,900 cm-1, an R-NH2 group at ~1,650 cm-1, CH2 bending at ~1,400 cm-1, S=O stretching at ~1,200-cm-1, and a C-O-C bond at 1,080 cm-1. p-11568 also exhibited a fibrous-type ultra-structure and contained carbon, hydrogen, nitrogen, and sulfur elements in a ratio of 32.8%, 4.8%, 0.72%, and 18.7%, respectively.
Further studies on the structure of p-11568 are currently in progress Accordingly, the isolate Alteromonas sp. strain 00SS11568 produced a mucous exopolysaccharide, designated as p-11568, during the stationary phase.
As such, novel emulsifying agents with a better emulsification activity could be substituted for commercial emulsifying agents in areas like foodstuff technology, pharmacy, agro-chemistry, paints, cosmetics, coatings, and adhesives.
Dickinson (Ed.), Food Emulsions and Foams Royal Society of Chemistry, London. (1987) p, 1-29
Online since: March 2019
Authors: Rentsenmyadag Dashzeveg, Ninjbadgar Tsedev, Philippe Daniel, Ariunzaya Tsogoo, Erdene-Ochir Ganbold, Solongo Batmandakh, Arvin Bilegsaikhan, Alain Gibaud
Comparison Study on Antimicrobial and Photocatalytic Activity of Different Shaped ZnO Nanoparticles Ariunzaya Tsogoo1,2,a, Solongo Batmandakh3, Erdene-Ochir Ganbold4, Ninjbadgar Tsedev5, Philippe Daniel1, Alain Gibaud1, Arvin Bilegsaikhan6, Rentsenmyadag Dashzeveg2,b* 1Institute of Molecules and Materials, Department of Physics, Le Mans University, 72000 Le Mans Cedex 9, France 2Department of Chemistry, School of Arts and Sciences, National University of Mongolia, University Street 1, Sukhbaatar district, Ulaanbaatar, 14201, Mongolia 3The Joint Laboratory of Mongolian Armed Forces, Dandar Street 22, Ulaanbaatar, Mongolia 4Department of Physics, School of Arts and Sciences, National University of Mongolia, University Street 1, Sukhbaatar district, Ulaanbaatar, 14201, Mongolia 5Faculty of Engineering, New Mongol Institute of Technology, Manlaibaatar Damdinsuren Street 43, Bayanzurkh district, Ulaanbaatar, 13330, Mongolia 6New beginning international school, Bayangol district, Ulaanbaatar
XRD pattern of as synthesized spherical and rod shaped ZnO NPs shows all reflection peaks with hexagonal wurtzite structure with space group of P63mc, 186 (a. 3.249 and c. 5.206) in good agreement with standard JCPDS 36-1451.
[17] Huilian Liu, Jinghai Yang a, Zhong Hua, Yongjun Zhang, Lili Yang, Li Xiao, Zhi Xie, The structure and magnetic properties of Cu-doped ZnO prepared by sol–gel method, Applied surface science. 256 (2010) 4162-4165
Rajeswari Yogamalar, Arumugam Chandra Bose, Tuning the aspect ratio of hydrothermally grown ZnO by choice of precursor, Journal of solid state chemistry. 184 (2011) 12-20
[25] Takuya Kojima, Hiroshi Sugimoto, Minoru Fujii, Size-Dependent Photocatalytic Activity of Colloidal Silicon Quantum Dot, The Journal of Physical Chemistry C, 122 (3) (2018), 1874-1880
Online since: July 2006
Authors: A.N. Khramov, V.N. Balbyshev, R.A. Mantz
The effects of chemical structure and the loading concentration of the inhibitor within the coating were determined.
In this paper, we report our findings on corrosion protection performance of hybrid sol-gelderived coatings with incorporated several organic corrosion inhibitors ion-exchanged within coating structure.
The effect of inhibitors on corrosion performance was found to be affected by both concentration of inhibitor within the coating matrix and by the inhibitor's chemical structure.
At this time, we are unable to explain the difference in PDS tests between these two corrosion inhibitors since there are multiple variables that need to be taken into account including the difference in chemical structure, their different capability to interact with the matrix material, as well as possible effect of the nature of ionic group on crosslinking chemistry during the coating formation.
This effect is dependent upon chemical structure of the inhibitor and its loading concentration.
Online since: November 2011
Authors: De Lian Yi, Mao Sheng Tao, Qiao Hua, Hui Min Zhang, Lin Wu, Zhao Hui Ouyang, Guo Fei Liu
An adsorbent has been prepared from Heishan coal by chemical activation with KOH, the activated carbon has a BET surface area of 801.53 m2/g, the meso-pore ratio is 89.63%, SEM image shows that it is very rich in pore structure.
The use of activated carbon for removal of wastewater due to their well-developed porous structure comprised of hydrophobic grapheme layers and hydrophilic surface functional groups [4,5].
A summary of the porous structure of the activated carbon studied in the paper is shown in Table 1.
Table 1 Pore structure parameters of activated carbons SBET(m2/g) Smeso(m2/g) Vt(cm3/g) Vmic(cm3/g) Vmeso(cm3/g) Vmeso/ Vt(%) 801.53 662.22 0.48 0.050 0.43 89.63% SBET =BET surface area, Smeso= mesopore surface area, Vt=total pore volume, Vmic= micropore volume, Vmeso=mesopore volume.
It was suggested that the increase in adsorption depended on the properties of the adsorbent surface and the dye structure.