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Online since: November 2013
Authors: Rattana Tantatherdtam, Potjanart Suwanruji, Rungsima Chollakup, Marie France Vallat, Siriwat Radabutra, Sriroth Klanarong, Kanokwan Rungsanthien, Wirasak Smitthipong, Karine Mougin, Sombat Thanawan, Michel Nardin
., Bangkok 10900, Thailand. 2Department of Chemistry Faculty of Science, KU 50 Ngam Wong Wan Rd., Bangkok 10900, Thailand. 3Department of Biotechnology, Faculty of Agro-Industry, KU 50 Ngam Wong Wan Rd., Bangkok 10900, Thailand. 4Rubber Technology Research Center, Faculty of Science, Mahidol University, 25/25 Phuttamonthon 4 Rd.
Structure properties of purified natural rubber, J.
Statistical mechanics of swelling of network structures, J.
Online since: July 2006
Authors: Lj.M. Gajić-Krstajić, T.Lj. Trišović, Lj.M. Vračar, B. Babić
Their porous structure can be easily tailored during the sol-gel production process, yielding a rather high surface-area support, where the active phase can be well dispersed, and an a priori defined pore-size distribution facilitates desirable diffusion of reactants and products to and from the active phase [6].
Our finding from the previous work [7] that carbonized cryogels possess open mesoporous structure and high specific surface area offers interesting opportunities for preparation of nano-composite electrocatalysts.
[9] CRC Handbook of Chemistry and Physics, 75 th ed; R.C.
Online since: February 2006
Authors: Tomohiro Ozawa, Daisuke Gomibuchi, Hideki Kitamura, Hideki Masuda, Yurie Ito, Nayumi Ohata, Yasuhiro Funahashi
Nickel Phthalocyanine Complex Encapsulated into Nanopores of Faujasite Zeolite Nayumi Ohata1,a, Yurie Ito 1, Daisuke Gomibuchi1, Hideki Kitamura2, Yasuhiro Funahashi1, Tomohiro Ozawa 1 and Hideki Masuda1,b 1 Department of Applied Chemistry, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan 2 Sinanen Zeomic Co.
Introduction Metallophthalocyanines (MPcs, Scheme 1.) are known to have unique structure/function similar to metalloporphyrins which play an essential role in biological metabolic systems.
Faujasite zeolite has attractive structure to hold the metallophthalocyanine (14 Å), because they have supercages of crystalline pore which consist of four spherical windows with a diameter of ∼ 7 Å and spherical cages of 13 Å.
Online since: January 2009
Authors: S.A. Halim, Abdullah Huda
In this structure Mn3+ , surrounded by six oxygen atoms, is a Jahn-Teller (JT) atom.
All of the samples have the orthorhombic form of the perovskite structure.
Ferromagnetic Compounds of Manganese with Perovskite Structure.
Taboada, Transport Properties and Magnetoresistance of La.Ca Manganites near the Optimal Doping Concentrations, Journal of Solid State Chemistry, 171 (2003) 76-83 [8] Abdelmoula, N., Cheikh-Rouhou, A., and Reversat, L., 2001.
Ferromagnetic Compounds of Manganese with Perovskite Structure.
Online since: May 2015
Authors: Ting Ting Wang, Hang Guo, Yi Bo Zeng, Jian Yan Wang
The one is that the rough structures in micro and nano scale are constructed on the lower energy surface material.
And the other way is to decorate substrate of rough structures in micro and nano scale with low surface energy material.
Hence rough structures in micro and nano scale are to be constructed in polymer as the base.
Cassie-Baxter equation [10] is usually adopted to analyze and determine wetting characteristic of surface with structure in micro and nano scale, as shown equation (1)
Palgrave, Self-cleaning coatings, Journal of Materials Chemistry. 15 (2005) 1689-1695
Online since: April 2005
Authors: Faina Muktepavela, N. Zaporina
., LV-1063, Riga, Latvia 2 Institute of Inorganic Chemistry, Technical University of Riga, LV-2169, Salaspils, Latvia a e-mail:famuk.
Such deformed structure of IB defines low temperature brittleness of Zn-Sn, Al-Sn eutectics and hydrogen brittleness of Al-Sn.
SEM with X-ray spectral analysis (JSM-5300) was used for studies of structure and segregation phenomena.
Investigations of Pb-Sn alloy structure showed that the heavy deformation of this eutectic leads to formation of a very fine-grained and non-homogenous structure with grain size d = 0.05−−−−2 µm.
On the Fig.4,c structure of Pb-Sn eutectic is given after deformation by press-out in vacuum.
Online since: March 2012
Authors: Ping Guan, Xiao Ling Hu, Li Wei Qian, Xiao Qing Guo
The structure of MCILs would promise a new class of bi-functional ionic liquids.
Jodry and Mikami synthesized hydrophobic CILs bearing an imidazolium core derived from the chiral pool, and their structure of 3D network of hydrogen bonding were discussed [8].
Thus, the structure of MCIL1 and MCIL2 can be confirmed and proved the same as design.
And the MCILs’ structure of chiral center linked in cation with different magnetic anions such as [FeCl4]-, [FeBr4]- and [Co(SCN)4]2- would provide a series of novel functional ionic liquids.
Lacerda, The Structure of a Room-Temperature Ionic Liquid with and without Trace Amounts of Water: The Role of C-H···O and C-H···F Interactions in 1-n-Butyl-3-Methylimidazolium Tetrafluoroborate, Angew Chem.
Online since: February 2011
Authors: Xiao Jun He, Ming Dong Zheng, Ting Wang, Xiao Yong Zhang, Ru Chun Li
Effect of Microwave−Treatment Power on the Properties of Activated Carbons As Electrode Materials for Supercapacitors Xiaojun Hea, Ruchun Li, Mingdong Zhengb, Ting Wang and Xiaoyong Zhang School of Chemistry and Chemical Engineering, Anhui Key Laboratory of Coal Clean Conversion and Utilization, Anhui University of Technology, Maanshan 243002, China a xjhe@ahut.edu.cn, b zhmd118@ahut.edu.cn Keywords: Activated Carbon; Microwave−Treatment; Supercapacitor; Specific Capacitance Abstract.
In this paper, ACs after being prepared by microwave heating KOH activation are subjected to microwave−treatment to investigate the effect of microwave−treatment power on the pore structure parameters, functional groups and electrochemical properties of ACs.
The pore structure parameters of ACs are presented in Table 1.
Table 1 The pore structure parameters of ACs.
Online since: February 2011
Authors: Siti Aslina Hussain, Mohd Imran Rosly, Norhafizah Abdullah
The chemical structure of poly(lactide-co-glycolide)acid is illustrated in Figure 1 and Figure 2 depicted one of the example biodegradable micro particle of 60:40 lactide:glycolide PLGA.
Figure 1: Chemical structure of poly (lactic-co-glycolic) acid (PLGA) [9].
CFD is a sophisticated mathematical analysis technique used for predicting the behaviour of fluid in the flow field of interest, heat and mass transfer, phase change, chemical reaction, mechanical movement and even the stresses or deformation of related solid structures.
Rossi in: Ketoprofen Poly (lactide-co-glycolide) Physical Interaction, Department of Chemistry and Technology of Drugs, University of Perugia, Italy (2007)
Online since: July 2011
Authors: Li Tao Dong, Wen Fa Xiao
Studies on Methacryloyl guar gum: Surface morphology, Crystallinity, Biodegradability and Viscosity behavior of Semi-dilute solutions Wenfa Xiao1, a, Litao Dong1, b 1College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China axiaowenfa@yahoo.com.cn, bdonglt369@163.com Keywords: Methacryloyl guar gum, viscosity behavior, surface morphology, biodegradability, crystallinity Abstract.
The chemical structure of guar gum consists of anhydro-D-mannose monomer units linked to each other by β-(1-4) linkages to form the backbone chain.
It is evident from the SEM micrographs of GG (Fig. 1a) and its grafted product (Fig.1b) that profound morphological changes, in form of transition from fibrous particles to flake structure, have taken place because of grafting of methacryloyl chains onto guar gum (GG).
After being grafted using MAC, the characteristic peak of MAG has no obvious change compared with GG (Fig. 2a), indicating that the crystal structure of GG has not been destroyed during methacrylation.