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Online since: January 2012
Authors: Li Han, Han Qing Zhang, Feng Xian Qiu, Dong Ya Yang
China 2 School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu, P.R.
China 3 School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu, P.R.
China 4 School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu, P.R.
Keywords: Hyperbranched polyester; Intrinsic viscosity; Waterborne polyurethane dispersions; Crosslinking structure.
Sheth et al. [8] studied the structure-property behavior of the highperbranched PUU and its linear analog.
Online since: July 2013
Authors: Yang Lin Liu, Xue Chen Duan, Yan Yan Liu, Yao Ming Li
TiO2 with steady chemistry properties, insolubility, resistance to corrosion, non-toxicity and low cost to become hot research in the field of chemistry and environment science and to be competively studied by scientists and wide-ranging consideration by industries[2]; because of larger specific surface area and higher adsorptivity of TiO2 nanotubes[3], sythetizing composite materials by embeding smaller inorganic, organic, metallic or magnetic nano particles in TiO2 nanotubes can raise the photoeletric properties and catalytic performance.
(C) is TEM picture of TiO2 prepared by heat treatment at the temperature of 773K for 2h.It still reveals vague nanotubes structure which have about 15nm diameter and about 30nm to hundreds of nanometer.Some of them exist fracture and damage because of calcination at high temperature.If samples are calcined at 873K for 2h in (D),we can see that these samples emerge the droop of nanotubes structure and present stick shape and grangular.
high annealing at 773K will destroy the structure of nanotubes.D is TEM pattern which is obtained from annealing at 873K,it shows us that the structures of samples are totally broken and the morphology presents rodlike nano particles.
Fig.9 Pure TiO2 nanotubes prepared by incineration at 723K (A) and TEM patterns of Zn-ion surface modification TiO2 nanotubes in different temperature calcined (B):723K; (C):773K; (D):873K We are able to know from combining analytical results of XRD with structure of TEM that in order to manufacture Zn-ion-finishing TiO2 nanotubes with integrated tubular structure and sound crystallinity,annealing temperature need to be at 723K,which means that exorbitant temperature will wreck the structure of nanotubes and inadequate temperature will be hard to get rid of organic group,also will have lower crystallization and decrease photocatalytic activity of nanotubes.
[3] W ang W Z,Varghese O K,Paulose M,et a1.A study on the growth and structure of titania nanotubes [J].J M R,2004,19(2):417-422.
Online since: October 2011
Authors: Chang Yu Shen, Chun Tai Liu, Wen Juan Han, Guo Qiang Zheng, Yan Yan Liang
A variety of polymers have been explored to form the kebab of the NHSK structure.
Only Li and his coworkers reported such structure via either incubation or a solvent evaporation method.
Additionally, crystallization time has a great effect on the morphology of NHSK structure.
The morphological feature of the NHSK structure was observed by a FEI/Phillips Quonxe-2000 SEM at an accelerating voltage of 20kV.
Zaiser, “Interactions between Polymers and Carbon Nanotubes: A Molecular Dynamics Study,” Journal of Physical Chemistry B, vol.109, Apr. 2005, pp.10009-10014, doi: 10.1021/jp0442403 [13] C.Y.
Online since: February 2012
Authors: Heng Li
Study of an Inorganic Ion Exchanger AlTi(PO4)2.3333 JinHe Jiang MicroScale Science Institute , Department of Chemistry and Chemical Engineering ,Weifang University, Weifang, 261061,China Corresponding author.
Chemical composition, structure and some related properties and complex mechanism of this ion exchanger are investigated by electron microscopic, X-ray diffraction and chemical methods.
In this paper, the discussion is about the synthesis, structure and ion exchange of the Al-Ti composite oxide inorganic ion exchanger of AlTi(PO4)2.3333.
The structure of compound metal oxide AlTi(PO4)2.3333 crystallized at 770℃ was much perfect.
Prpperty of H2TiO3 type ion-exchangers and extraction of lithium from brine of natural gas wells J.Chinese Journal of Applied Chemistry.2000,17(3),307
Online since: October 2014
Authors: Yong Shui Kang, Xiao Yu An, Yue Zhao, Wen Dong Ji
Further more, using the theory of physical chemistry, the freezing point and frozen ratio were derived.
Then, the frozen ratio was derived using the theory of physical chemistry.
Unfortunately, the preprocessing function of FLAC3D is poor to deal with complicated geotechnical engineering structures.
ANSYS is proficient in modeling and meshing complicated structures.
Using the theory of physical chemistry, frozen ratio was derived.
Online since: September 2019
Authors: Viktor A. Markov, Alexey Povolotskiy, Ivan Sokolov
Glass Physics and Chemistry.
Glass Physics and Chemistry.
Glass Physics and Chemistry.
Glass Physics and Chemistry.
The structural chemistry of phosphorus compounds // Topics in phosphorus chemistry. 1966.
Online since: September 2016
Authors: Dhiman Bhattacharyya, Mark Conrad, Pranesh Muralidhar
The chemistries used in this work were a standard wet clean consisting of hot SPM and hot SC1 followed by cold SC1 nanospray.
The sequence of chemistries dispensed remains same in CIP2.
Bare silicon wafers’ surface become more and more hydrophilic as they go through several passes of SPM/SC1 chemistry.
Successive use of chemistries of higher temperature, such as hot SPM and hot SC1, heated up the wafer surface to higher temperature.
Some adjustments to the recipe structure, SC1 and nanospray flows were made to the CIP1 recipe considering the probable causes of the bull’s eye signature.
Online since: June 2020
Authors: Li Chuan Jin, Dainan Zhang, Miao Qing Wei
The film has a good flat structure.
Journal of Solid State Chemistry, (92) 1991 178-190
Journal of Physics & Chemistry of Solids (60) 1999 445-448
Journal of Materials Chemistry (10) 2000 2388-2391
The Journal of Physical Chemistry B (107) 2007 5709-5716
Online since: June 2019
Authors: Elena Dedova, Arseniy Portnyagin, Mariya Yu. Petrushina, Natalya Ruban, Anastasya Kirilovich, Polina Topchian, Alexander Gubanov
However, the structure of the precursor is extremely sensitive to various changes in the synthesis process.
J. of Solid State Chemistry 139.2 (1998): 424-426.
J. of Solid State Chemistry 182.8 (2009): 2030-2035.
J.Chemistry of materials 8.12 (1996): 2809-2823.
J. of Materials Chemistry 11.12 (2001): 3354-3359.
Online since: March 2017
Authors: Muhamad Nasir, Dita Apriani
FTIR analysis results were used to confirm structure of catechin-gelatin nanofiber.
This result shows us that electrospinning process cannot change structure of catechin, gelatin and polyethylene oxide in nanofibers.
Liang, Food Chemistry, 196 (2016), p. 347-354
Petrozziello, Food Chemistry, 207 (2016), p. 162-169
Amin, Food Chemistry, 172 (2015), p. 368-376