Search results

The chemical structure, as well as the physical state of the polymer material, can significantly affect the frost resistance of materials.
Results and Discussion The structure of the obtained copolyesters was confirmed by IR spectroscopy, an X-ray phase analysis was carried out, and polydispersity was studied.
Chebotarev, Development of research in the field of chemistry and technology of aromatic polysulfones, Plastics. 11 (2003) 3-7
Zaikov (Eds.), Modern Tendencies in Organic and Bioorganic Chemistry: Today and Tomorrow, New York, 2008, pp. 211-214
Mozheiko, Molecular and topological structures in polyester block copolymers, European Polymer Journal. 37 (2001) 2187-2199

Popchenko: Waterproofing of structures and buildings.
Construction of mines and urban underground structures.
Churaev: Physico-chemistry of mass transfer processes in porous solids.
Moscow: Chemistry, (1990), pp. 272
Construction of Unique Buildings and Structures, no. 4, (2013), pp. 18-28

X-ray diffraction (XRD) and Transmission electron microscope (TEM) were utilized to characterize the structure, shape, size of the obtained products.
However the research about this unique and rare structure of macromolecule, such as Mn3B7O13Cl, was comparatively less.
Sol-gel method[5-6] is one of wet chemistry methods, as its high uniformity, high purity, low sintering temperature(lower 400-500℃ than traditional method), easier to control, which can be widely used to synthesis nano-materials.
Morphology and structure of Mn3B7O13Cl Fig.2 shows the XRD pattern of Mn3B7O13Cl powders.
In the structure of borate, Boron atoms always form the structure of BO3 flat triangle and BO4 tetrahedral groups, while in Mn3B7O13Cl numerator the bond that between B and O belong to the structure of BO4, Using the Digital Micrograph software to demarcate and calculate the selected area.

Crystalline structure of PVDF nanofibers.
Although there are many crystalline structures in PVDF, only the β-phase structure has the strong piezoelectricity and ferroelectricity.
Therefore it is crucial to understand the crystalline structure of PVDF electrospun nanofiber.
Nalwa: Ferroelectric polymers: chemistry, physics, and applications (M.
Chonan: Journal of Intelligent Material Systems and Structures.

This causes industrial short down and high cost of replacement of steel structures.
Molybdenum represent a body centered cubic crystal structure.
International Journal of Industrial Chemistry, 10(2), 159-173
Journal of industrial and engineering chemistry, 40, 106-117
The Journal of Physical Chemistry C, 120(21), 11598-11611

The thermal treatment of the resulting powder at 1000°C yields a defective G-structure with a low-intensity peak at 2θ = 26.16° [20–23].
The shift of the π–π* transition peak from 230 to 265 nm indicates the restoration of sp² domains in the GO-structure.
The ratio of 1.01 for GO(graphite) indicates that the structure of the sample is defective.
Previously, we established [20–23] that vacuum treatment of GO(graflex) sample at 1000°C for 1 h produces G with a defective structure, the maximum peak of which appears in the XRD diffractogram at 2θ = 26.16°, which corresponds to a carbon material with an ordered G-structure.
Ruoff, The chemistry of graphene oxide, Chem.

Mechanical scratching and chemical self-assembling can be combined to fabricate nano- or micro-scale functional structures on the oxide-coated silicon.
The silicon (100) surface was modeled as a cluster of 27 Si atoms arranged in a tetrahedral structure and terminated with hydrogen atoms.
As shown in Figure 1 a), the 3D mapping displays the groove structures on the surface.
However, step structures disappear and there are groups and lattice structures on the silicon surface scribed in aryldiazonium salt as shown in Fig. 1 b).
The chemomechanical method described in this paper will have important implications for building nano- or micro-scale functional structures on silicon substrate.

Assembly of thin film solar cell with the structure of FTO/SnS2:Cu/SnS/Sn.
Results and discussion Crystal structure of the nanocrystal.
Figure 5 showed the photocurrent-voltage curve of the thin film solar cell with the novel structure of FTO/SnS2:Cu/SnS/Sn.
Maurir, Contribution/I l'etude de compos6s sulfur6s d'etain(II): aflinement de la structure de SnS, Acta Crystallogr.
Qian, Crystal Chemistry Introduction, Third Version, China, 2005.

Algorithm Discription Decoupling IMC Design Based on V-norm Fig. 1 is the structure of multivariable internal model control system.
(2) Fig1 The Structure of Multivariable IMC Fig2 V-norm Decoupling IMC System Structure In this article, controller C uses V-norm decoupling.
The structure of the multivariable IMC based on V-norm decoupling is shown in Fig. 2.
The control structure is shown in Fig. 3.
Yang: A simple multiloop tuning method for PID controllers with no proportional kick, Industrial and Engineering Chemistry Research 38 1456-1468. (1999).

Considering the present trend towards the incorporation of these ceramics in tribological applications, the importance of a more comprehensive understanding of the ceramic surface physics and chemistry cannot be overestimated.
The surface enlargement during friction creates new surfaces, which form a bridge between the physics and chemistry of wear processes, leading to microscopic aspects of a wide variety of wear mechanisms.
Furey and Kajdas [15] described the concept of tribopolymerization and demonstrated that it can be used as an effective approach to designing specific molecular structures for boundary lubrication of ceramics.