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The structures of product were characterized by IR, NMR.
Therefore, the optimum pH value of the reaction is 3. 2.6 Structure Characterization of Product The appearance of 2,2'-dithiobis(pyridine-N-oxide) is white crystalline powder, and mp is 204-205 Celsius degrees(literature[3]:44%, mp200-201oC).
The structures of product was characterized by IR, NMR..
Antimicrobial protection for plastic structures: US20050112339[P]:2005-05-26
Journal of Inorganic Chemistry，2001，17（3）：427-429

The results showed that composite coatings had a compacter and refiner surface than ordinary Pb-Sn alloy coatings; the addition of CNTs increased the number of crystal cores and changed the directions of crystal orientation, which resulted in a fine network structure.
In particular, multi-walled carbon nanotubes, with the concentric hollow structure of enclosed surface graphite cylinders, have the privileged self-lubricating properties [11].
From the comparison of the above images, Pb-Sn alloy coatings had a regular grains structure with clear boundaries, while the composite coatings possessed fine netlike structures with compact tissues.
Electrodeposition in the Ni-plating bath containing multi-walled carbon nanotubes[J].Materials Chemistry and Physics. 110(2008)481~485.

A Theoretical Study on the Vibrational Spectra and Thermodynamic Properties for the Derivatives of HNS with –CH3, –N3, and –NF2 Groups Wang Guixianga, Gong Xuedongb and Xiao Hemingc Computation Institute for Molecules and Materials, Department of Chemistry, Nanjing University of Science and Technology, Nanjing, 210094, China awanggx1028@163.com, bgongxd325@njust.edu.cn, cxiao@njust.edu.cn Keywords: Derivatives of HNS; Density functional theory; IR spectra; Thermodynamic property Abstract.
The derivatives of HNS are optimized to obtain their molecular geometries and electronic structures at the DFT-B3LYP/ 6-31G* level.
Fig. 1 Illustration of the structures of HNS (hydrogen atoms are omitted).
Computational Methods Many studies [8,9,11,12] have shown that the DFT-B3LYP method[13,14] in combination with the 6-31G*[15] basis set is able to give the accurate energies, molecular structures, and infrared vibrational frequencies.
In this paper, the derivatives of HNS with -CH3, -N3 and -NF2 groups were fully optimized to obtain their molecular geometries and electronic structure.

The structure of the copolymer was characterized by Fourier transform infrared (FTIR) spectroscopy.
The structure of the enzyme catalyzed synthetic tanning agent was verified by Fourier Transform Infrared (FTIR) Spectrometer of VECTOR 22, made by German BRUKER Company.
solution 46 64 Hard,better 6 0.4∶0.6∶1.0 0.2 0.02 Yellow solution 45 68 Tough 7 0.2∶0.8∶1.0 0.1 0.03 Yellow solution 48 66 More hard Table 2 The applied results of copolymer used as retanning agent Number Monomer (P : PS : AM) Monomers residue/ wt % Copolymer status Acid hide Ts/°C thickness increment ratio／% Sensory evalution AM P+PHS before tanning after tanning 1 0.8∶0.2∶1.0 0.1 0.03 Brown solution 107 110 12.4 softer 2 0.8∶0.2∶2.0 0.1 0.02 Brown solution 106 108 13.5 softer 3 0.8∶0.2∶2.5 0.1 0.02 Yellow solution 108 110 15.3 softer 4 0.6∶0.4∶1.0 0.1 0.01 Brown solution 107 112 18.3 softer 5 0.5∶0.5∶1.0 0.1 0.01 Yellow solution 105 106 17.4 softer 6 0.4∶0.6∶1.0 0.3 0.02 Yellow solution 104 104 16.2 softer 7 0.2∶0.8∶1.0 0.3 0.02 Yellow solution 109 108 19.6 softer Fig. 2 The fibers dispersion of retanning leather (a-the tanned leather, b-the retanned leather) Structure
The synthetic scheme of phenol-acrylamide copolymer and the theoretical schematic structures of the copolymer are depicted in Fig. 4.
Xing: Journal of Electroanalytical Chemistry. 566 (2004), p. 415

Study on Synthesis and Properties of a New Imidazoline Corrosion Inhibitor Qiu Haiyan a, Dong Jun School of Chemistry and Chemical Engineering, Southwest Petroleum University,ChengDu, Sichuan, China, 610500 awindqq2002@163.com Keywords: Imidazoline, Quaternary-ammonium-salt, Corrosion inhibitor Abstract.
The structure of synthetic product was characterized by IR, and the corrosion inhibition performance was tested by static weight loss method.
(3) : average corrosion rate no corrosion inhibitor, g/ (m2h) : average corrosion rate of final product, g/ (m2h) Results and Discussions Identification of the Molecular Structure of the Synthetic Product Purified the final product, and then got IR of the purification of the final product.
This structure increases the stability of the product.
The structure of imidazoline in the synthetic product molecular was characterized by IR

Senhadji2,d 1Laboratory Geo-materials (LDMM), Department of Civil Engineering, University of Djelfa, Algeria. 2Department of Civil Engineering, Laboratory of Materials LABMAT, ENPO, Oran, Algeria. 3Faculty of Exact Sciences and Applied, Laboratory of Polymer Chemistry LCP, University of Oran 1, Ahmed Benbella, BP 1524, El Mnaouer, Oran 31000; Algeria. 4Department of Chemistry, Preparatory School of Science and Technology EPST, BP 165 RP, 13000 Bel Horizon, Tlemcen, Algeria.
Sorptivity is a measure of the capillary forces exerted by the pore structure causing fluids to be drawn into the body of the material [14, 15].
This reduced sorptivity reflects a finer pore structure that would, for example, inhibit ingress of aggressive elements into the pore system [26].
Mortar composites modified with thermoplastic waste PET are often used as low-cost materials for preventing chemical attacks or repairing various reinforced concrete structures damaged by chloride-induced corrosion, as well as in structures exposed to aggressive environments where high resistance to acid, basic [36-38] and chloride solutions is required.
Thus, such mortars can be recommended as effective materials for preventing the chloride-induced corrosion of reinforcing steel in various concrete structures.

Concrete structure especially that exposed to aggressive environment is deteriorated leading to damage of concrete buildings.
The reason behind this effect is the generation of a dens network structure formed due to incorporation silicon dioxide inside epoxy matrix.
Limin, Structure and properties of polyurethane / nanosilica composites, Journal of Applied Polymer Science, 95(5) (2005) 1032 - 1039
Olajumoke, Effects of sulphuric acid on the compressive strength of blended cementcassava peel ash concrete, Construction Materials and Structures 204 (2014) 764 -771
Chuiko Institute of Surface Chemistry, Kyiv, Ukraine, Resistance of Epoxypolymer with 2 - 5 wt% Nanosilica in Aggressive Acid Medium, Open Journal of Polymer Chemistry, 2 (3) (2012), Article ID:22210,7

Combining these methods provides a comprehensive view of the structure and properties of the silver layer on the TiO2/Ti substrate.
The surface structure of the Ag/TiO2 samples was examined using a JEOL FE-SEM, model JSM-7600F, operating at a voltage of 20 kV.
The Ag nanoparticles are spherical, with a diameter of approximately 100 nm, and aggregate to form a flower-like structure.
This can be explained by the porous crystal structure of TiO2, which increases the surface area and enhances its interaction with water.
The synthesized silver nanoparticles are spherical with a diameter of approximately 100 nm, aggregating into a flower-like structure.

The fully understanding chemistry and the thermo-mechanical process route in profile based components manufacturing is concluded to be fundamental for high performance products.
The run-out speed and requirement linked to surface or micro structure are the productivity limiting factors.
Additional the effect of dispersoid forming elements to control grain structure like Cr and Zr have been investigated.
The profiles are controlled for grain structure after a T6 treatment (5a and 5b) and in the diagram a critical temperature is shown between a recrystallized product and a fibrous one.
Figure 5b: Typical microstructure 1) when alloy is recrystallization stable, 2) recrystallization unstable, mixed grain structure.

In our prior study, we reported that the chemistry of matrix phase is mainly dependent upon alloying elements and cooling rates from liquid phase resulting in different microstructures and mechanical properties.
Besides the peaks corresponding to fcc-structured Al matrix phase, many additional peaks were detected in the diffraction spectra.
Apparently, it is noted that both specimens have a similar microstructural feature displaying equiaxed grain structure and fine dispersoids distributed uniformly within grains and at grain boundaries.
However, nano structure may be correlated to explain this unusual room temperature flow behavior.
Equiaxed grain structures and extremely fine dispersoids were characterized over the whole microstructure for both specimens.