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Online since: February 2013
Authors: C. Witthayaprapakorn, Robert Molloy, K. Thananukul, N. Suttenun, P. Punyamoonwongsa
Green chemistry and environmental responsibility has led it to develop the bio-plastic for use as packaging.
Surface morphology and interior structure of the films was investigated by using a LEO 1450VP microscope.
Acknowledgement The corresponding author (CW) wishes to thank the Department of Science (Chemistry), Faculty of Sciences and Agricultural Technology, Rajamangala University of Technology LANNA, Chiang Mai Campus, Mae Fah Luang University for providing the research facilities and The Project of Hands-on Research and Development Rajamangala University of Technology LANNA for finance support.
Yang, Transparent and ductile poly(lactic acid)/poly(butly acrylate)(PBA) blends: Structure and Properties, European Polymer Journal, 48 (2011), p. 127-135 [4] N.
Lopez-Manchado, Structure and properties of polylactide/Natural rubber blends, Materials Chemistry and Physic, 129 ( 2011), p. 823-831 [5] C.M.
Surface morphology and interior structure of the films was investigated by using a LEO 1450VP microscope.
Acknowledgement The corresponding author (CW) wishes to thank the Department of Science (Chemistry), Faculty of Sciences and Agricultural Technology, Rajamangala University of Technology LANNA, Chiang Mai Campus, Mae Fah Luang University for providing the research facilities and The Project of Hands-on Research and Development Rajamangala University of Technology LANNA for finance support.
Yang, Transparent and ductile poly(lactic acid)/poly(butly acrylate)(PBA) blends: Structure and Properties, European Polymer Journal, 48 (2011), p. 127-135 [4] N.
Lopez-Manchado, Structure and properties of polylactide/Natural rubber blends, Materials Chemistry and Physic, 129 ( 2011), p. 823-831 [5] C.M.
Online since: September 2020
Authors: Alla Bogatina, Aleksei Revyakin, Lyubov Morgun, Vladimir Morgun
Shichkova, Colloid chemistry: the structure of the double electric layer, production and stability of dispersed systems, A manual for students of the Faculty of Chemistry, Minsk, BSU, 2011
Rusanov, Phase equilibria and surface phenomena, Chemistry, Moscow, 1967
Friedrichsberg, The course of colloid chemistry: Study book for universities, 3rd ed.
Petersburg: Chemistry, 1995
Bogatina, The influence of the shape of raw components on the structure of foam concrete, Chemistry, Physics and Mechanics of Materials, Voronezh State Technical University. 4 (19) (2018) 15-27
Rusanov, Phase equilibria and surface phenomena, Chemistry, Moscow, 1967
Friedrichsberg, The course of colloid chemistry: Study book for universities, 3rd ed.
Petersburg: Chemistry, 1995
Bogatina, The influence of the shape of raw components on the structure of foam concrete, Chemistry, Physics and Mechanics of Materials, Voronezh State Technical University. 4 (19) (2018) 15-27
Aspirin Drug Intercalated into Zinc-Layered Hydroxides as Nanolayers: Structure and In Vitro Release
Online since: November 2017
Authors: Nisreen Abdul Rahman Najem Abed, Iyad Daoud Alshawabkeh, Suha Mujahed Abudoleh, Rasha Khaled Ali Abuthawabeh, Abdul Rahman Najem Abed, Samer Hasan Hussein-Al-Ali
Zinc-layered hydroxides (ZLHs) can be called host materials for drugs due to the resulting host–guest structures they can form.
X-ray diffraction patterns were used for determining the structure of nanocomposites in the range of 2–60o on an XRD-7000 diffractometer (Netherlands).
Fig. 2 Reaction steps and molecular structure models of the transformation of aspirin into ASPN nanocomposites.
Oswald, The crystal structure of zinc hydroxide nitrate, Zn5 (OH) 8 (NO3) 2.2 H2O, Acta Crystallographica Section B: Structural Crystallography and Crystal Chemistry. 26(6) (1970) 860-863
Binev, The infrared spectra and structure of acetylsalicylic acid (aspirin) and its oxyanion: an ab initio force field treatment, Journal of Molecular Structure. 378(3) (1996) 189-197
X-ray diffraction patterns were used for determining the structure of nanocomposites in the range of 2–60o on an XRD-7000 diffractometer (Netherlands).
Fig. 2 Reaction steps and molecular structure models of the transformation of aspirin into ASPN nanocomposites.
Oswald, The crystal structure of zinc hydroxide nitrate, Zn5 (OH) 8 (NO3) 2.2 H2O, Acta Crystallographica Section B: Structural Crystallography and Crystal Chemistry. 26(6) (1970) 860-863
Binev, The infrared spectra and structure of acetylsalicylic acid (aspirin) and its oxyanion: an ab initio force field treatment, Journal of Molecular Structure. 378(3) (1996) 189-197
Online since: March 2012
Authors: Bai Ling Liu, Ru Li, Bao Tan Zhang, Xiu Ning Chen, Gong Ying Wang
The structure of the copolymers was confirmed by 1H and 29Si NMR.
Journal of Polymer Science Part a-Polymer Chemistry 44, 3629-3639 (2006)
Chemistry of Materials 9, 761-765 (1997)
Journal of Organometallic Chemistry 691, 5052-5055 (2006)
Schraml, in The Chemistry of Organic Silicon Compounds Z.
Journal of Polymer Science Part a-Polymer Chemistry 44, 3629-3639 (2006)
Chemistry of Materials 9, 761-765 (1997)
Journal of Organometallic Chemistry 691, 5052-5055 (2006)
Schraml, in The Chemistry of Organic Silicon Compounds Z.
Online since: October 2013
Authors: Jie Xu
Density functional theory and the hard and soft acid-base theory are widely used in quantum mechanics and computational chemistry.
The typical adsorption behavior of iron oxide and organic acids have been extensively studied , the surfactant concentration is not easily obtained from experimental data ,so the reaction mechanism of adsorption is often used to estimate the surface complexation model .This paper is based on the density functional theory , combined with the hard and soft acid-base theory, using the humic acid cell structure model calculated chemical parameters and the surface complexation model in estimate the adsorption constant , to make a linear free energy relationship and explore the adsorption mechanism[4-6].
This paper selects nine kinds of typical soil organic acids, build their molecular structure optimization plot, and calculate each molecular surface area( the figure below) .
Conclusions Establishing DFT-based forecast equation by chemical parameters model of organic acid molecular structure.
References [1] Peng Xing-hua,Zhang Wu,Zhao Qi-guo, Progress on Relationship between soil organic carbon pool and the soil structure stability, ACTA PEDOLOGICA SINICA, V01.41.No.4,July,2004 [2] Hou Xue-ying,Han Xiao-zeng, Research Progress of soil organo-mineral complexes, SYSTEM SCIENCES AND COMPREHENSIVE STUDIES IN AGRICULTURE, Vol24 , No1,Feb. , 2008 [3] Liu Zhong-liang,Yu Wan-tai, Progress of organic carbon in soil aggregates, Chinese JournaI of Eco—Ag—cuIture,March 2011 ,19(2):447—455 [4] Ali, M.
The typical adsorption behavior of iron oxide and organic acids have been extensively studied , the surfactant concentration is not easily obtained from experimental data ,so the reaction mechanism of adsorption is often used to estimate the surface complexation model .This paper is based on the density functional theory , combined with the hard and soft acid-base theory, using the humic acid cell structure model calculated chemical parameters and the surface complexation model in estimate the adsorption constant , to make a linear free energy relationship and explore the adsorption mechanism[4-6].
This paper selects nine kinds of typical soil organic acids, build their molecular structure optimization plot, and calculate each molecular surface area( the figure below) .
Conclusions Establishing DFT-based forecast equation by chemical parameters model of organic acid molecular structure.
References [1] Peng Xing-hua,Zhang Wu,Zhao Qi-guo, Progress on Relationship between soil organic carbon pool and the soil structure stability, ACTA PEDOLOGICA SINICA, V01.41.No.4,July,2004 [2] Hou Xue-ying,Han Xiao-zeng, Research Progress of soil organo-mineral complexes, SYSTEM SCIENCES AND COMPREHENSIVE STUDIES IN AGRICULTURE, Vol24 , No1,Feb. , 2008 [3] Liu Zhong-liang,Yu Wan-tai, Progress of organic carbon in soil aggregates, Chinese JournaI of Eco—Ag—cuIture,March 2011 ,19(2):447—455 [4] Ali, M.
Online since: May 2006
Authors: Jacqueline Marchand-Brynaert, Claudio Salvagnini
Marchand-Brynaert b
Unité de Chimie Organique et Médicinale, Université catholique de Louvain, Bâtiment
Lavoisier, place Louis Pasteur 1, B-1348 Louvain-la-Neuve, Belgium
a
salvagnini@chim.ucl.ac.be, bmarchand@chim.ucl.ac.be
Keywords: hemocompatibility, thrombin inhibitors, surface wet chemistry, photografting,
arylazide, poly(ethylene terephthalate), PET, poly(butylene terephthalate), PBT
Abstract
Piperazinyl-amide derivatives of N-α-(3-trifluoromethyl-benzenesulfonyl)-L-arginine were synthesized
as graftable thrombin inhibitors.
The designed molecules were fixed on poly(ethylene terephthalate) (PET), and poly(butylene terephthalate) (PBT) by wet chemistry treatment (activation of hydroxyl chain-ends) and photochemistry (nitrene insertion by photoactivation of aromatic azide).
General structure of synthetic thrombin inhibitors.
[13] Membranes activation by wet chemistry: PET (Whatman, "track-etched" membrane, thickness 12 µm, density 1.39 g/cm3, pores diameter 0.49 µm, pore distribution 1.45x10 6 pores/cm2) and PBT (John Manville, meltblown membrane, 0.133 mm thickness, mean flow pore of 5 µm) membranes were cut in disks (13 mm of diameter) and immersed, by groups of 10 samples, into a solution of TsCl (5 g), pyridine (0.8 g), acetone (50 mL) for 1 h at 20°C (PBT) or 60°C (PET).
The designed molecules were fixed on poly(ethylene terephthalate) (PET), and poly(butylene terephthalate) (PBT) by wet chemistry treatment (activation of hydroxyl chain-ends) and photochemistry (nitrene insertion by photoactivation of aromatic azide).
General structure of synthetic thrombin inhibitors.
[13] Membranes activation by wet chemistry: PET (Whatman, "track-etched" membrane, thickness 12 µm, density 1.39 g/cm3, pores diameter 0.49 µm, pore distribution 1.45x10 6 pores/cm2) and PBT (John Manville, meltblown membrane, 0.133 mm thickness, mean flow pore of 5 µm) membranes were cut in disks (13 mm of diameter) and immersed, by groups of 10 samples, into a solution of TsCl (5 g), pyridine (0.8 g), acetone (50 mL) for 1 h at 20°C (PBT) or 60°C (PET).
Online since: November 2010
Authors: Yu Kui Li, Yun Peng Liu
In this paper, the suspension gate structure was designed and fabricated, and the fabrication process of suspension gate structure based on mica plate substrate was explored.
For the gate structure, the high-quality mica plate was adopted as the gate substrate material.
So the suspension gate structure was formed easily.
Liu: Materials chemistry and physics Vol. 115 (2009), p. 463
Lee et al.: Journal of physics and chemistry of solids.
For the gate structure, the high-quality mica plate was adopted as the gate substrate material.
So the suspension gate structure was formed easily.
Liu: Materials chemistry and physics Vol. 115 (2009), p. 463
Lee et al.: Journal of physics and chemistry of solids.
Online since: September 2013
Authors: Wibowo Harso Nugroho, Hana Catur Wahyuni, Prantasi Harmi Tjahjanti
Physics and Chemistry Test on Aluminum-Based Composite Materialsas an Alternative Material for The Manufacture of Brake Drum
Tjahjanti P.H1a, Nugroho W.H2b, Wahyuni H.Cc
1Department of Mechanical Engineering, University of Muhammadiyah Sidoarjo (UMSIDA), Sidoarjo, Jawa timur, Indonesia
2BPPT Lab.
Physics testing includes testing of thermal conductivity and thermal expansion coefficient, and Chemistry testing the corrosion penetration rate when the test material was coating with regular polish, with chrome, with nickel and with nickel + chrome.
However, to further refine and optimize the brake drum that can be produced with both the necessary physics and chemistry test.
While the micro-structure in Figure 2.
Physics testing includes testing of thermal conductivity and thermal expansion coefficient, and Chemistry testing the corrosion penetration rate when the test material was coating with regular polish, with chrome, with nickel and with nickel + chrome.
However, to further refine and optimize the brake drum that can be produced with both the necessary physics and chemistry test.
While the micro-structure in Figure 2.
Online since: September 2013
Authors: Jian Wang, Feng Zhen Yang, Hua Yuan, Wei Liu, Mei Xu
Catalytic Synthesis of Isoamyl Acetate Catalyzed by (NH4)6[MnMo9O32]•8H2O Supported Activated Carbon with Waugh Structure
Mei Xu1,a, Hua Yuan1,b, Wei Liu1,c, Jian Wang1,d and Fengzhen Yang1,e
1Department of Chemistry and Enviromental Science, Cangzhou Normal University, Cangzhou 061001, Hebei China
axm308@163.com, byh8276@163.com, clw9225@sina.com, dwangjian0902@163.com, ejhcyfz@sina.com
Keywords: Waugh structure, Supported ammonium 9-molybdate manganese heteropolyacid salt, Catalyst, Isoamyl acetate
Abstract.
The Keggin structured HPAs as catalyst of esterification has been reported frequently.
Materials and methods Apparatus and materials Apparatus. 32 organic chemistry instrument (TianJin), GC122 gas chromatograph (ShangHai), WTA-2W abbe refractometer (ShangHai), FTIR-8400S fourier transform infrared spectroscope (Shimadzu Corporation) Materials.
Conclusion (1) The synthesis of isoamyl acetate is catalysed with waugh structure HPA-salt ((NH4)6[MnMo9O32]·8H2O) supported activated carbon, the optimum technological conditions should be as follows: isoamyl alcohol to acetic acid molar ratio is 1.646:1; catalyst load is 40%, the dosage is 0.2g (taking HPA-salt as a benchmark); the reaction time is 63 min or so; 100% selectivity and 89.48% of conversion rate
Chinese Journal of Organic Chemistry, 2000,20(5):819-821(In Chinese) [4] Mei Xu, Hongpeng Li, Ping Chen.Chemistry and Bioengineering, 2005,(10):12-13(In Chinese) [5] Fujuan zhang, Muwen Li, Xuefeng Wang.
The Keggin structured HPAs as catalyst of esterification has been reported frequently.
Materials and methods Apparatus and materials Apparatus. 32 organic chemistry instrument (TianJin), GC122 gas chromatograph (ShangHai), WTA-2W abbe refractometer (ShangHai), FTIR-8400S fourier transform infrared spectroscope (Shimadzu Corporation) Materials.
Conclusion (1) The synthesis of isoamyl acetate is catalysed with waugh structure HPA-salt ((NH4)6[MnMo9O32]·8H2O) supported activated carbon, the optimum technological conditions should be as follows: isoamyl alcohol to acetic acid molar ratio is 1.646:1; catalyst load is 40%, the dosage is 0.2g (taking HPA-salt as a benchmark); the reaction time is 63 min or so; 100% selectivity and 89.48% of conversion rate
Chinese Journal of Organic Chemistry, 2000,20(5):819-821(In Chinese) [4] Mei Xu, Hongpeng Li, Ping Chen.Chemistry and Bioengineering, 2005,(10):12-13(In Chinese) [5] Fujuan zhang, Muwen Li, Xuefeng Wang.