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Online since: October 2006
Authors: Thorsten Brandau, Egbert Brandau
The application of microspheres of these compounds has big advantages to faster surgery and higher
strength of the bone structure.
Well shaped spherical particles with a narrow size distribution give an advantage for fast and well structured bone building.
All installations can be designed to match customers needs like GMP/GLP, FDA or pharma, food, chemistry or other industrial standards.
Well shaped spherical particles with a narrow size distribution give an advantage for fast and well structured bone building.
All installations can be designed to match customers needs like GMP/GLP, FDA or pharma, food, chemistry or other industrial standards.
Online since: July 2011
Authors: Yan Ling Luo, Feng Xu, Yan Miao
Study on synthesis and properties of novel HTPB/PEG polyurethane copolymers
Yan-Ling Luo1, a, Yan Miao2, b, Feng Xu3, c
1-3 Key Lab of Macromolecular Science of Shaanxi Province, School of Chemistry and Materials Science, Shaanxi Normal University, Xi’an 710062, P.
The experimental results indicate that all polyurethane samples form the microphase separation structure, and the separation degree depended on their sequence structure and the molecular weight (MW) of PEG, and further affecte their in-vitro degradation.
The degradation is correlated with the structure and the hydrophilicity of the components.
The chemical structure of samples was characterized by FT-IR (Thermo Electron Corp, Nicolet 6700).
As shown in Figure 2, the copolymers assume two-phase separation structure.
The experimental results indicate that all polyurethane samples form the microphase separation structure, and the separation degree depended on their sequence structure and the molecular weight (MW) of PEG, and further affecte their in-vitro degradation.
The degradation is correlated with the structure and the hydrophilicity of the components.
The chemical structure of samples was characterized by FT-IR (Thermo Electron Corp, Nicolet 6700).
As shown in Figure 2, the copolymers assume two-phase separation structure.
Online since: October 2012
Authors: Chang Wei Su, Xian Yan Zhou, Mi Mi Chen, Yan Xia, Xiang Zhong Huang, Jun Ming Guo, Ying Jie Zhang
Currently, the cathode materials focus on layered structure LiCoO2, LiNiO2, LiMnO2 and spinel LiMn2O4 and olivine LiFePO4, LiMnPO4.
Structural and Morphological Characterizations The phases and structures of products were analyzed by the X-ray diffraction (D/max-rB, Japan, Cu-Kα).
The products with 5 wt% and 10 wt% citric acid, the cubic structure morphologies of which were more prominent.
Basu, Influence of S and Ni co-doping on structure, band gap and electrochemical properties of lithium manganese oxide synthesized by soft chemical method, J.
Han, et al, Synthesis and crystal structure of LiMn2O4 cathode material for Li-ion battery, Chin.
Structural and Morphological Characterizations The phases and structures of products were analyzed by the X-ray diffraction (D/max-rB, Japan, Cu-Kα).
The products with 5 wt% and 10 wt% citric acid, the cubic structure morphologies of which were more prominent.
Basu, Influence of S and Ni co-doping on structure, band gap and electrochemical properties of lithium manganese oxide synthesized by soft chemical method, J.
Han, et al, Synthesis and crystal structure of LiMn2O4 cathode material for Li-ion battery, Chin.
Online since: October 2011
Authors: S. Suresh, Arumugam Chandra Bose, K. Venkateswarlu, Rameshbabu Nagumothu, S. Subramanian
Effect of electrolyte chemistry on the structural, morphological and corrosion characteristics of titania films developed on Ti-6Al-4V implant material by plasma electrolytic oxidation
K.
The electrolyte chemistry influences the nature of the pore (open or closed) and its size distribution in the coating, the phases present in the coating, and both these factors have a bearing on the corrosion performance of the PEO coating [3].
This is based on the fact that intensive micro discharges occur and release more energy, while the thick coating [4,7] formed with higher TSOP concentration causes structural defects leading to a loose and coarse-pore structure.
The electrolyte chemistry influences the nature of the pore (open or closed) and its size distribution in the coating, the phases present in the coating, and both these factors have a bearing on the corrosion performance of the PEO coating [3].
This is based on the fact that intensive micro discharges occur and release more energy, while the thick coating [4,7] formed with higher TSOP concentration causes structural defects leading to a loose and coarse-pore structure.
Online since: January 2018
Authors: Tuyana Dembelova, Yury Baloshin, Yuri Barnakov, Bair Damdinov, Vitalii Petranovskii
It can be supposed that the liquid has some structure at the small amplitude of shear deformation.
This structure is probably associated with clusters, and it collapses with increasing deformation.
The coefficient Bi for kinetic units of a complex nature depends on features of their internal structure.
Dembelova et al, Study of shear properties of nanoparticle suspensions, Procedia Chemistry, 10 (2014), 2–6
Rodnikova, Microdynamics of hydration In: "Method of molecular dynamics in physical chemistry".
This structure is probably associated with clusters, and it collapses with increasing deformation.
The coefficient Bi for kinetic units of a complex nature depends on features of their internal structure.
Dembelova et al, Study of shear properties of nanoparticle suspensions, Procedia Chemistry, 10 (2014), 2–6
Rodnikova, Microdynamics of hydration In: "Method of molecular dynamics in physical chemistry".
Online since: October 2012
Authors: Vijaya Chikkaveeraiah Veeranna Gowda, K.R Sardar Pasha, M. Sudhakar Reddy, C. Narayana Reddy
This is due to the formation of non-bridging oxygens (NBO’s) in the structure.
The proportion of trigonal and tetrahedral boron depends on both the chemistry and concentration of the added modifier oxides.
Bismuth from Bi2O3 generally tends to occupy octahedral positions in glass structure.
The decrease in the molar volume also indicates more compactness in the structure and Bi3+ has a contracting effect leading to increase in density [13].
In the stoichiometric diborate glass, we should expect the dominant presence of diborate units in the structure along with other borate species.
The proportion of trigonal and tetrahedral boron depends on both the chemistry and concentration of the added modifier oxides.
Bismuth from Bi2O3 generally tends to occupy octahedral positions in glass structure.
The decrease in the molar volume also indicates more compactness in the structure and Bi3+ has a contracting effect leading to increase in density [13].
In the stoichiometric diborate glass, we should expect the dominant presence of diborate units in the structure along with other borate species.
Online since: March 2007
Authors: Y. Wang, Hu Yong Tian, Helen Lai Wah Chan, Wan Ping Chen, J.Q. Qi, Z.J. Shen, X.F. Ruan
Spark Plasma Sintering of Core-Shell Structured (Mg,Zn)O Wrapped
Ba1-xSrxTiO3 Nanopowder
W.P.
Details of the synthesis of the core-shell structures have been reported elsewhere [12-14].
The powders having a core-shell structure were prepared via a chemical route.
The core-shell structured powders were calcined at 1100°C for 2 h, and then ball-milled and dried.
Choy, Progress in solid chemistry, 33 (2005) 207
Details of the synthesis of the core-shell structures have been reported elsewhere [12-14].
The powders having a core-shell structure were prepared via a chemical route.
The core-shell structured powders were calcined at 1100°C for 2 h, and then ball-milled and dried.
Choy, Progress in solid chemistry, 33 (2005) 207
Online since: September 2017
Authors: Jeefferie Abd Razak, Mohd Azam Mohd Adnan, Katerina Anak Birang, Farah Iddayu Abu Bakar, Syahriza Ismail
The hexagonal wurtzite and zincite structure were successfully formed through this method.
The images for all samples shows the presence of nanorod structure.
With the addition of Co, nanorod structures is seemed to form.
This eventually leads to the changes of the structure.
Mohapatra, Enhanced photocatalytic activity of Co doped ZnOnanodisk and nanorods prepared by a facile wet chemical method, Physical Chemistry Physics, 16 (2014) 12741-12749
The images for all samples shows the presence of nanorod structure.
With the addition of Co, nanorod structures is seemed to form.
This eventually leads to the changes of the structure.
Mohapatra, Enhanced photocatalytic activity of Co doped ZnOnanodisk and nanorods prepared by a facile wet chemical method, Physical Chemistry Physics, 16 (2014) 12741-12749
Online since: April 2015
Authors: Abdulkadir Özer, Gamze Bozkurt, Ayşe Bayrakçeken Yurtcan
Furthermore, electrochemical properties of the resulting structures were investigated.
It was observed that the samples synthesized with KOH+NH3 at room temperature had leaf-like structure and the corresponding calcined samples showed a particle structure, the samples synthesized with KOH both at room temperature and treated with calcination showed a particle structure and the samples synthesized with NaOH both at room temperature and treated with calcination showed a structure like layers consisting of caking of nanospheres.
Fig. 5 showed that the pseudo capacitive behaviors exist for all CuO structures.
The samples showed different morphologies including leaf-like, particle-like and plate-like structures.
Willander, CuO nanoflowers as an electrochemical pH sensor and the effect of pH on the growth, Journal of Electroanalytical Chemistry 662 (2011) 421–425
It was observed that the samples synthesized with KOH+NH3 at room temperature had leaf-like structure and the corresponding calcined samples showed a particle structure, the samples synthesized with KOH both at room temperature and treated with calcination showed a particle structure and the samples synthesized with NaOH both at room temperature and treated with calcination showed a structure like layers consisting of caking of nanospheres.
Fig. 5 showed that the pseudo capacitive behaviors exist for all CuO structures.
The samples showed different morphologies including leaf-like, particle-like and plate-like structures.
Willander, CuO nanoflowers as an electrochemical pH sensor and the effect of pH on the growth, Journal of Electroanalytical Chemistry 662 (2011) 421–425
Online since: April 2007
Authors: Kaoru Igarashi, Tadao Shimizu, Ying Song, Fu Liu, Fu Ping Wang
Hydroxyapatite Coatings Deposited on Titanium substrate by
Pulsed Laser Deposition
Fu Liu
1, Ying Song 2, Fuping Wang 2, Kaoru Igarashi 3 and Tadao Shimizu3
1
School of Materials Science & Engineering, Harbin Institute of Technology, Harbin 150001, China
2
Department of Applied Chemistry, Harbin Institute of Technology Harbin 150001, China
3
Department of Life & Environmental Science, Chiba Institute of Technology, Chiba 275-0016,
Japan
Keywords: Pulsed laser deposition, Hydroxyapatite, Hydrothermal treatment
Abstract.
The structure and morphology of samples were characterized by X-ray diffraction, Fourier transform infrared reflection specterophotometry, scanning electron microcopy.
The micro- structures of the sample surfaces were observed by scanning electron microscopy (SEM).
The surface structures of the coatings were analyzed by X-ray diffraction (XRD).
Fig. 3 shows the micro- structures of the surfaces of HA coatings after hydro- thermal treatment.
The structure and morphology of samples were characterized by X-ray diffraction, Fourier transform infrared reflection specterophotometry, scanning electron microcopy.
The micro- structures of the sample surfaces were observed by scanning electron microscopy (SEM).
The surface structures of the coatings were analyzed by X-ray diffraction (XRD).
Fig. 3 shows the micro- structures of the surfaces of HA coatings after hydro- thermal treatment.