Search results

Moreover, the higher the intensity of the mechanical action, the more significant are the changes in the supramolecular structure of the cellulosic material.
Autlov, Microcrystalline cellulose: structure, properties and applications (review), J.
Chemistry of plant raw materials. 3 (2013) 33-41
Problems of physical and chemical mechanics of fibrous and porous dispersed structures and materials.
Atakhanov, Obtaining, structure, properties and production technology of cotton microcrystalline and nanocellulose. (2016) 32

Synthesis and Characterization of Polyorganosiloxane Modified Waterborne Polyurethane Luo Suilian1, a, Liu Chaodong1, b , Gong Guofei1, c , Lai Heiping1, d , Kong Wenzhong 1, e 1 School of Chemistry and Environment, South China Normal University, Guangzhou, China a luosuilian@163.com, b 507113321@qq.com, cggf06@126.com. d huashilap2006@126.com Keywords: Waterborne polyurethane, polyorganosiloxane, HO-PDMS Abstract: In this work, PDMS modified PU was synthesized using two-stage method to improve water resistance and weather resistance in the waterborne polyurethane was investigated.
The structure incorporated the PDMS into the soft segment of polyurethane chains was confirmed by FTIR.
FTIR (Perkin-Elmer 1730) spectrometer was used to identify the structure of WBPU.
Effect of PDMS content on Hardness of Si-PU The structure of the Si-PUs was confirmed by FTIR spectroscopy and as an example the spectra for S8 sample and WPU was shown in Fig. 1.
The structure incorporated the PDMS into the soft segment of polyurethane chains was confirmed by FTIR.

The structure of organophilic montmorillonite (OMMT) was characterized by XRD and TG.
Introduction Montmorillonite (MMT) is one kind of silicate mineral with the layer structure and the nanometer structure [1, 2].
Because of the special structure and lower prices of MMT, it was widely applied in polymer/MMT nanocomposites, and the preparation of MMT modified polymer is a hot spot of the current materials science field [3, 4].
[2] Haiquan Chen, Yingyong Li and Junwu Zhu: Chinese journal of inorganic chemistry.

Structure of high compression strength hybrid material was characterized through FTIR spectra.
Results and Discussion Structure Design and FTIR Analysis When the mixture of MTES and TEOS encounters with water, individual hydrolysis of these two precursors will take place.
It can be seen that cyclic species was formed during the sol-gel process, as the reaction continues; these cyclic are gradually transformed to more and more open structures [5], as shown in Fig. 3.
Conclusion In this paper, the structure of high compression strength material was studied through FTIR spectra.
Wang: Principles of Colloid and Surface Chemistry (Chemical Industry Press, Beijing 2004).

The Synthesis and Characterization of Polyether-modified Polysiloxane Phosphate Ren Longfanga , Wang Xuechuan b, Ding Jianhuac Key Laboratory of Aids Chemistry & Technology for Light Chemical Industry, Ministry of Education, Shaanxi University of Science & Technology, Shaanxi, Xi'an 710021,China a email: renlf1010@163.com, bemail: wxc-mail@163.com, cemail: 06dingjianhua@sust.edu.cn Keywords: Polyether-modified polysiloxane phosphate, synthesis, surface properties Abstract: In order to combine the properties of phosphate surfactants and silicone surfactants, the polyether-modified polysiloxane phosphate (PPSP) was prepared.
The molecular structure of phosphate was characterized by FTIR and 31P-NMR.
The reason is that ionize phosphate side group is introduced into the molecular structure [4-5].
At last, the surface properties, foaming capacity and the structure characterization of PPSP were also studied.
The molecular structure of phosphate was characterized by IR and 31P-NMR, which showed that the expected product was formed.

Positronium has been used to explore the basic structure of quantum electrodynamics [40].
The electron-positron bound state (Positronium) is a very important probe for molecular structural organization; ortho-positronium is often used to study porous structure and complex molecular structures.
Jean (Eds.), Positron and positronium chemistry, Elsevier, Amsterdam, 1988
Third International Workshop on Positron and Positronium Chemistry, World Scientific, Singapore, 1990, pp. 109-135 [18] H.
Schrader, Principles and applications of positron and positronium chemistry, World Scientific, Singapore, 2003

Ferromagnetic Nanomaterials Obtained by Thermal Decomposition of Ferrocene Nikola Koprinarov 1, a, Mariana Konstantinova1, b, Miko Marinov 2, c 1 Central Laboratory of Solar Energy and New Energy Sources, Bulgarian Academy of Sciences, 72, Tzarigradsko chaussee Bulv, Sofia 1784, Bulgaria 2 Institute of Physical Chemistry, Bulgarian Academy of Sciences, bl. 11 Acad.
Their composition and structure have been studied by Mössbauer spectroscopy, Scanning and Transmission Electron Microscopy, Electron Probe X-ray Micro Analysis and Energy Dispersive X-ray Spectrometry.
It inhibits the decomposition process and growth of ordered structures, preventing the end materials to be separated from each other.
The main problems of small particles, especially those of iron, are to have time stability and chemical resistance, keeping their optimal crystalline structure and magnetic properties.
But, despite of the fact that the condition for atom binding and arising of ordered structure occurred rarely, a small number of particles emerged and increased their initial mass by catching atoms, which hit them with small kinetic energy.

The structure and morphology were examined by X-ray diffraction (XRD), and Scanning Electron Microscope (SEM), respectively.
Also the effect on the structure and the morphological properties of ZnO when co-doped with silver and Indium is examined.
Introduction Nanotechnology is broad range of research and finds variety of potential applications in surface science, organic chemistry, molecular biology, semiconductor physics etc.
From the above diffraction patterns we see that most of the peaks observed are matching with hexagonal wurtzite structure of ZnO,Ag,In.
Meenambika, Effect of calcinations on the structure and morphological properties of Ag and In co-doped ZnO nanoparticles, J.Mater.Sci.Mater.

Preparation and Performance of Ni-YSZ/YSZ Co-ceramic Using Multiple Gel-tape Casting Zhongzhou Yi1, a, Fengrui Zhai 1, b, Hong Tian2, c and Zhipeng Xie 3, d 1College of Science, Honghe University, Yunnan 661100, P.R.China 2Department of chemistry, Wenshan University, Yunnan 343000, P.R.China 3Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, P.R.China ayizhongzhou@tsinghua.org.cn, bzhaifr0873@126.com, ctianhong@163.com, dxzp@tsinghua.edu.cn Keywords: Ni-YSZ/YSZ; Gel-tape casting; Electrical property; Microstructures Abstract.
The YSZ is continued and compact with network structure, Ni particulates are well distributed in it, suitable for intermediate temperature solid oxide fuel cell anode materials.
Image analysis of SEM micrograph showed that the structure is loose, porous, uniform and compact in Ni/YSZ/YSZ multi-layer composite ceramics, which meet the requirement of intermediate temperature SOFC.
Anode after deoxidize reaction with loose and porous structure is beneficial for the transfer of gas.
The structure of anode is uniform and compact which meet the requirement of intermediate temperature SOFC.

The ZrSi2 structure no more remains stable and transforms to the ThSi2 type structure.
Hence in Fig.5 the MgCu2 type structure should be denoted as "Laves Phase" to include the other two Laves phase structures also.
The structure remained stable up to ~ 16 GPa.
Frank, in: Electronic Transitions and High Pressure Physics and Chemistry of Solids, Chapman and Hall, London (1973)
Fournier, in: Actinides-Chemistry and Physical Properties: Structure and Bonding, Vol. 59/60, edited by L.