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Preparation and Characterization of CaCu3Ti4O12 Ceramics by Cold Isostatic Press Forming Jie Lia, Hao Xue and Zhaoxian Xiongb Department of Materials Science and Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China a jieleee@126.com, b zxxiong@xmu.edu.cn Keywords: CaCu3Ti4O12; Giant dielectric constant; Cold isostatic press forming Abstract.
Introduction Recently, CaCu3Ti4O12 (CCTO) with the unusual cubic perovskite structure was reported to show an enormous dielectric constant, εr, of about 10,000-100,000 at room temperature and good temperature stability over a wide temperature range from 100 K to 600 K [1-3].
The phase structure of CCTO samples was characterized via X-ray diffraction.
Results and Discussion The XRD patterns of CCTO powders calcined at different temperatures were shown in Fig.1, with cubic perovskite structure.
The phase structure was identified and morphology of CCTO ceramics was observed.

The process of interaction of work material and grinding disk obeys complicated laws of physics and chemistry that is why the development of a mathematical model is challenging.
The structure defects, such as cracks and chips, are located on the grain edge and the processes of adhesive contact in this area are the most intensive.
Damaged while processing crystal lattice exchanges bonding electrons and disk grains and as a result processed metal structure forms excess amount of carbon ions.
Due to damaged structure adhesive interactions intensively turn in physical and chemical processes in the area of high carbon concentration.
When a membrane gets thicker orientation forces on the surface get weaker and it tends to obtain stable structure.

Effect of Glycerol on Properties of Tapioca Starch-based Films Piyapoom Piyawatakarn1, 2, Chutima Limmatvapirat3, Pornsak Sriamornsak1,2, Manee Luangtana-Anan1, 2, Jurairat Nunthanid1, 2, and Sontaya Limmatvapirat1, 2,* 1 Department of Pharmaceutical Technology, Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand 2Pharmaceutical Biopolymer Group (PBiG), Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand 3Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand Corresponding author: sontayal@hotmail.com Keywords: Tapioca starch, Glycerol, Mechanical property, Water vapor permeability Abstract.
To investigate the change of crystal structure after film preparation and incorporation of glycerol, powder x-ray diffraction patterns of powder and corresponding films of tapioca starch were recorded as shown in Figure 2.
In this case, the gelatinization process during film preparation might destroy the crystal structure.
The FTIR spectrum has been shown to be sensitive to change of molecular structure of starch [9].The FTIR absorbance at 1048 cm-1 is linked with order/crystalline region while that of 1020 cm-1 is a result of absorption by stretching mode of amorphous part of starch.
The glycerol not only plasticized the film but also affected the change of crystal structure, which in turn had an effect on other related properties of film.

Influence of Pozzolanic Additive on Pore Size Distribution of Lime Mortar Monika Čáchováa, Magdaléna Doleželováb and Martin Keppertc 1Czech Technical University in Prague, Faculty of Civil Engineering, Department of Materials Engineering and Chemistry, Thákurova 7, 166 29 Praha 6 amonika.cachova@fsv.cvut.cz, bmagdalena.dolezelova@fsv.cvut.cz, cmartin.keppert@fsv.cvut.cz Keywords: pore size distribution, pozzolanic admixture, transport properties.
As well as in the cementitious systems [7], many material’s properties in lime-based mortars is related to the pore system structure [8].
Heterogeneous structure is typical for ceramic materials; the CD is consisting from numerous minerals (Tab. 2).
The addition of ceramic dust caused modification of ITZ towards finer structure what influenced positively the mechanical as well as transport properties (slower liquid transport, faster diffusion of water vapor) of mortar.
Van Parys: Materials and Structures, Vol. 49 (2016), p. 2767–2780.

Choice of chemistry in coupling ligands to support materials were investigated using different amount of activator (glutaraldehyde) and ligand concentration.
The developed affinity membranes were characterized in term of morphology and structure (using SEM), elemental content (using ATR-FTIR), crystalline structure (using XRD) and membrane porosity.
(a) (b) Figure 1 Surface morphology of (a) Native PSf 15 (b) affinity membrane Membrane activation using glutaraldehyde method was able to produce crosslinking that stabilize the membrane structure during ligand immobilization [2].
This affinity membrane shows a rough and porous surface structure which can provide an increased surface area, as well as reducing the mass transfer resistance and facilitated the diffusion of enzyme molecules.

Shashi and Kamal Jain, 2007) used photogrammetry for accurate 3D modeling and visualization of structures.
In developed countries, it has been widely used in industy, architecture, archeology, biology, chemistry and so on.
Application Example A digital consumer camera, Nikon D90 (Fig.4) was adopted to take images for monitoring the structure deformation during the building integral translation.
A.: MONITORING DEFORMATIONS OF STRUCTURES, Photogrammetric Engineering and Romate Sensing Vol.41, 1375-1384 (1975) [3] Werner Bösemann: Advances in photogrammetric measurement solutions, Computers in Industry Vol.56, 886-893 (2005) [4] Erlandson, J.
A.: MONITORING DEFORMATIONS OF STRUCTURES, Photogrammetric Engineering and Romate Sensing Vol.41, 1375-1384 (1975) [5] Fraser, C., D.

Introduction Self-assembly of nanostructured materials into organized and designed structures is an important goal in material chemistry for application in electronic devices [1-4].
In most cases, however, the work on assembly of functional metal nanoparticle-conducting polymer composite to the insulated polymer latex spherical substrates to form the core-shell structure has not been described yet.
Aniline monomer and styrene were distilled under reduced pressure and kept at -15℃ before use. 2.2 Preparation of PS-cores/Au and PANI-shells structured sub-microspheres.
The diameter of the core-shell structure increased from 480±10 nm (PS core) to 530 ±10 nm (three layers of PSS/PANI).

Crosslinking agent is usually polyfunctional isocyanate or polyfunctional alcohol, and its structure directly affects the performance of polyurethane adhesive products.
Epoxy resin (EPR) has strong cohesion strength, compact molecular structure, high adhesion strength and good heat resistance because of its epoxy groups, aromatic groups and other rigid groups.
Organosilicon is a kind of polymer material with silicon in its structure.
Because of its special structure and composition, organosilicon has many excellent advantages such as heat resistance, water resistance, and electrical insulation, non-toxic.
[5] CHEN Jinghua, LIU Weiqu: Synthesis and Properties of Polyurethane Modified with Siloxane, Guangzhou Chemistry Vol.28, No.4 (2003).

Sulphates in an aerated concrete mixture regulate the setting of the mixture by means of delaying lime slaking (or its flocculation – agglomeration as Ca(OH)2 which is connected with strong heat release) and also by facilitating the formation of thixotropic structure as electrolytes.
SEM images of aerated concrete with 10 % addition of CaSO4.2H2O (10S) The SEM images clearly show the developed tobermorite structure of the concrete specimens.
Based on this investigation it can be said that with 5 % addition of gypsum brings the best structure of aerated concrete as setting was in keeping with the release of hydrogen which is responsible for the aeration.
Šauman, Theory of building materials structure, Brno University of Technology, Czech Republic, Faculty of civil engineering, 1979
Zaoui, Understanding of bonding and mechanical characteristics of cementitious mineral tobermorite from first principles, Journal of Computational Chemistry, Volume 32, Issue 2, 2011, pp. 306–314.

Efficient Sunlight Active Nanocomposite Photocatalyst for Degradation of Pollutant Organic Dyes Limei Duan1a, Jinghai Liu1b, Qingyu Pang1c, Ling Xu1d, Zongrui Liu*1e 1 College of Chemistry and Chemical Engineering, Inner Mongolia University for Nationalities, Tongliao 028000, P.
The enhanced sunlight absorption improves the photocatalytic activity comparing with the common TiO2. [6] Core-shell structure also has been efficiently used to promote the photocatalytic activity and light absorption of nanostructured TiO2.
The strong diffraction peaks show the well crystallized structure.
The well combined structure of CdS nanoparticles and TiO2 particles is important for composing nanocomposite photocatalyst with heterojunction structure.