Search results

Sample ablation was determined by gravimetry, surface wettability and aging by goniometry, chemical structure by FTIR spectroscopy and surface morphology by AFM microscopy.
The effect of plasma modification is similar for all polymers regardless of their chemical structure.
By chosing working gas it is possible to affect chemical structure of modified polymer.
Production of new oxidized structures on HEMA and EOEMA chains and changes of the surface morphology and roughness affect polymer wettability characterized by contact angle [11].
In former studies [12] it was shown that the concentration of oxidized structures created by plasma treatment does not change with aging time.

Solvothermal Synthesis of Mn-doped CdS Nanorods Using Single-source Molecular Precursors Zhen Ni Dua, Zhi You Xub, Yong Cai Zhangc,* and Ming Zhangd Key Laboratory of Environmental Material and Environmental Engineering of Jiangsu Province, College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China ajane860605@yeah.net, bhyxuhyxu@sohu.com, czhangyc@yzu.edu.cn, dlxyzhangm@yzu.edu.cn Keywords: Nanostructures; Semiconductors; Solvothermal; Single-source molecular precursors Abstract.
The structures and compositions of the as-synthesized products were characterized by X-ray diffraction, energy dispersive X-ray spectroscopy and transmission electron microscopy.
All the XRD peaks in Fig. 1(a) can be indexed to monoclinic structure [Cd-(DDTC)2]2 (JCPDS card no. 43-1978).
The complex ions with bidentate ligands on the sample surfaces could be linked through hydrogen bonds in the polyamine donor solvent, and self-assembled to a chain structure [18-22].
The steric hindrance, limitation of spatial structure and the chain structure of the intermediate molecular building blocks can induce the preferential growth of Cd1-xMnxS towards nanorods [18-22].

The results indicated that the mechano-chemical treatment helped for releasing the active agents of WGRPs and formatting homogenous the cross-linked structures of final products.
Generally, the tensile strength mainly depended on the integrality of the cross-linked structure, so the decreasing trend of tensile strengths of the rubber blends could be ascribed to two reasons: one was the un-complete formation of three dimensional net structures; the other is the inhomogeneous cross-link densities in various local areas.
As the amounts of WGRPs increased, it was more difficult to form complete and homogeneous cross-linked rubber net structure for the migration of sulfur in WGRPs into the blends.
For the elongation ratios as break of rubber products also relied on both integrality and homogeneity of the cross-linked structures.
This was mainly because of the non-uniform cross-linked structures especially between the domains of WGRPs and natural rubber, which led to the formation of incompatible interfaces.

In this work we studied crystal structure, crystallographic parameters, morphology and textural properties of BaPrO3 perovskite synthesized by EDTA-Citrate complexation process.
The adopted methodology makes it possible to obtain powders with orthorhombic crystal structure ( a=6.07 Å; b=6.3 Å e c=8.7 Å) and crystallite size of approximately 100 nm.
Introduction The most numerous and interesting compounds with perovskite structure are oxides, but some carbides, nitrides, halides and hydrides also crystallize with this structure.
Refinement of the results by the Rietveld method confirms orthorhombic crystal structure (space group pmcn), with unit cell volume equal to 335.86 Å3, density of 3.82 gcm-3 and parameters equal to: a = 6.1 Å; b = 6.3 Å and c = 8.7Å, similar to those presented in literature [10-13].
As shown in Fig. 4 the type II isotherm perovskite has a wide distribution of pore sizes, isotherm adsorption properties similar to macroporous material, it compared as defined by the IUPAC (International Union of Pure and Applied Chemistry) resembling a type II hysteresis loop isotherm, porous materials characteristics with clusters [16].

Screening of a Thermophilic Hydrocarbon-degrading Bacterial Consortium and Community Structure Analysis Qiyou Liu1, a, Lin Li 1, b, Dongfeng Zhao 1, c, Chaocheng Zhao1, d 1College of Chemical Engineering, China University of Petroleum, Qingdao, P.
The community structure characteristics of the KL9-1 consortium were analyzed by means of scanning electron microscopy (SEM), 16S rDNA sequences, separation and purification of a single strain in order to provide efficient bacteria source and theoretical basis for microbial remediation of petroleum contaminated soil at Karamay, China.
Yu: Chemistry & Bioengineering.

It is found that the most stable structure of h-BN corresponds to the axial ratio c/a of about 2.652.
Result and discussion The common form of layered BN is a hexagonal structure h-BN with four atoms in the unit cell.
It is found that the most stable structure of h-BN at zero pressure and room temperature corresponds to the ratio c/a of 2.652.
Our results confirm that our structure is stable.
Moeller: Inorganic Chemistry: A Modern Introduction Wiley, New York, (1982), in press

Porous Silicon as Functionalized Material for Biomedical Application Xi-feng Zhang*, Hong-xia Dong and Yuan-yuan Chou School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China *Corresponding author Keywords: Porous silicon, Drug delivery, Cancer, Virue, DNA.
Drug Delivery PSi has become a potential drug delivery vehicle because of its physical and optical properties, including biodegradability, biocompatibility, high surface area to volume ratio, convenient surface chemistry, simple loading procedure, and high drug payloads and very low toxicity.
This drug delivery has the advantage of approach over existing ones based on PSi with the iCVD coating, which can be served as the PSi matrix after drug loading without degradation of the drug, because the whole process did not expose the drug to harmful solvents or high temperatures and the surface chemistry and the pore size of the nanoporous matrix were independent.
The research of reference [24]Employ a sandwich assay scheme comprising a linking chemistry (biotin/streptavidin) to attach biotinylated anti-rabbit IgG (receptor) to detect rabbit IgG (target).The final detection range of rabbit IgG was 0.07-3 mg mL-1 (0.4-17 ng mm-2), and binding specificity was demonstrated by employing an anti-chicken IgG control receptor.
In a word, due to porous structure, biocompatibility, and controllable dissolution behavior of PSi, it has been successfully extended to biological world as a novel biological material.

The adsorption properties of the materials can be greatly improved by changing the structure[4-7].
Journal Materials Chemistry A, 1(2013): 4685-4692
Journal Physical Chemistry C, 120(2016): 22019-22027
Journal Materials Chemistry A, 1 (2013): 5996-6003
Journal Materials Chemistry A, 1(2013): 12115-12122

John’s, NL A1C 5S7, Canada 3Analytical Chemistry Research Group, Bandung Institute of Technology, Jl.
Water is a reactant and reaction medium, hydrolyzing the hemicellulose to simple sugars and breaking down the biomass structure to release lignin (Iriadi et al., 2019; O’Connor et al., 2007; Pan et al., 2005).
Industrial and Engineering Chemistry Research, 49(4), 1467–1472. https://doi.org/10.1021/ie900683q [10].
Industrial and Engineering Chemistry Research, 49(20), 10132–10140. https://doi.org/10.1021/ie101247w [12].
Journal of Industrial and Engineering Chemistry, 17(1), 18–24. https://doi.org/10.1016/j.jiec.2010.10.003 [17].

Effect of a novel low-voltage alternating current pulse on solidification structure of Al-7Si-0.52Mg alloy Limin Zhang1, a, Rong Zhang1, b, Wenjing Chen1, Yuewei Wu1, Ning Li1 1 Key Laboratory of Space Applied Physics and Chemistry, Ministry of Education, School of Science, Northwestern Polytechnical University, 710072, Xi’an, P.R.China aliminzhang_lmss@mail.nwpu.edu.cn, bxbwl01@nwpu.edu.cn Keywords: Low-voltage alternating current pulse, Grain refinement, Nucleation stage, Electric potential energy Abstract.
It provides an alternative method to improve the solidification structure.
Hence, this article focuses on the effect of ACP on the solidification structure of Al-7Si-0.52Mg alloy.
Results Structure evolution under ACP with different current density.
The solidification structure of Al-7Si-0.52Mg alloy can be refined by ACP with proper current density.