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Online since: August 2013
Authors: Xiao Mei Tong, Chang Fu Li
Preparation and Characterization of Self-healing Microcapsules Containing Two-component
Tong Xiao-mei a, Li Chang-fub
Key laboratory of Auxiliary Chemistry & technology for Chemical Industry, Ministry of Education.
School of Chemistry and Chemical Engineering, Shaan xi University of Science and Technology; Xi an, 710021, China aemail:tongmei21@sohu.com, bemail:24727744@qq.com Keywords: Two-component microcapsule; Epoxy resin;Sebacic dihydrazide; Self-healing Abstract.
The size and distribution of particle, surface morphology, structure, thermal properties and content of core were measured and characterized by using particle size analyzer(PSA), optical microscopy (OM), infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), thermal gravimetric analysis (TGA).
Introduction Enlightened by self-coalescence ability of biology, the crack coheres can be used inside the material and reach healing through releasing chemistry matter [1].
Performance test and structure characterization.
School of Chemistry and Chemical Engineering, Shaan xi University of Science and Technology; Xi an, 710021, China aemail:tongmei21@sohu.com, bemail:24727744@qq.com Keywords: Two-component microcapsule; Epoxy resin;Sebacic dihydrazide; Self-healing Abstract.
The size and distribution of particle, surface morphology, structure, thermal properties and content of core were measured and characterized by using particle size analyzer(PSA), optical microscopy (OM), infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), thermal gravimetric analysis (TGA).
Introduction Enlightened by self-coalescence ability of biology, the crack coheres can be used inside the material and reach healing through releasing chemistry matter [1].
Performance test and structure characterization.
Online since: July 2019
Authors: K. Byrappa, B. Guruswamy, C. Shruthi, V. Ravindrachary, N.K. Lokanath, Janet Goveas, Karthik Kumara
Crystal structure was determined using Rigaku XtaLAB Mini diffractometer.
The molecular structure is non planar.
The crystal structure is stabilized by both inter and intra molecular hydrogen bond interactions.
Schulz, Gunter Reck, Burkhard Schulz: Journal of Molecular Structure 832 (2007) 124-131 [6] Samir Bondock, Shymaa Adel, Hassan A.
Badria: European Journal of Medicinal Chemistry 48 (2012) 192-199 [7] K.
The molecular structure is non planar.
The crystal structure is stabilized by both inter and intra molecular hydrogen bond interactions.
Schulz, Gunter Reck, Burkhard Schulz: Journal of Molecular Structure 832 (2007) 124-131 [6] Samir Bondock, Shymaa Adel, Hassan A.
Badria: European Journal of Medicinal Chemistry 48 (2012) 192-199 [7] K.
Online since: January 2017
Authors: Shamo Zokhrab Tapdiqov, Seadet Humbatova, Nizami A. Zeynalov, Dilgam Taghiyev, Samira Mammadova
Synthesis and Study of Structure Silver Nanoparticles by Polyethyleneglycol – Gum Arabic Polymers
Seadet Humbatova1, Shamo Tapdıgov1a, Nizami Zeynalov1,
Dilgam Taghiyev1, Samira Mammadova1
1Department of nanostructured metal polymer catalysist, Institute of Catalysis and Inorganic Chemistry, Azerbaijan National Academy of Sciences
ashamotapdiqov@mail.ru
Keywords silver nanoparticles, polyethylene glycol, gum arabic, X-ray, SEM, nanocomposites.
It was confirmed by SEM, UV-Vis and FTIR spectroscopy methods that obtained silver nanoparticles centered on the surface have cubic and hexagonal structure and can be used in medicine.
In the present work by using reducers with the participation of polyethyleneglycol (PEG) and gum arabic (GA) we studied the obtaining and structure of Ag nanoparticles (NP).
[17] X.Wang, S.Zhang and Z.Zhang, Synthesis of hexagonal nanosized silver sulfide at room temperature, Materials Chemistry and Physics, 107 (2008) 9-12
[20] M.A.Albrecht, C.W.Evans, C.L.Raston, Green chemistry and the health implications of nanoparticles, Green Chem, 8 (2006) 417– 432
It was confirmed by SEM, UV-Vis and FTIR spectroscopy methods that obtained silver nanoparticles centered on the surface have cubic and hexagonal structure and can be used in medicine.
In the present work by using reducers with the participation of polyethyleneglycol (PEG) and gum arabic (GA) we studied the obtaining and structure of Ag nanoparticles (NP).
[17] X.Wang, S.Zhang and Z.Zhang, Synthesis of hexagonal nanosized silver sulfide at room temperature, Materials Chemistry and Physics, 107 (2008) 9-12
[20] M.A.Albrecht, C.W.Evans, C.L.Raston, Green chemistry and the health implications of nanoparticles, Green Chem, 8 (2006) 417– 432
Online since: January 2023
Authors: Pritam Saha
Moreover, the use of Sodium aluminate (NaAlO2) is expected to extend this green-protocol and atom-friendly chemistry for the synthesis of varied heterocyclic compounds of interest.
The widespread usage of compounds of heterocycles used in the pharmaceutical sector is attributed to the copiousness of reaction methods that allow for modest alteration in structure of compounds.
Probably, the most significant transition in synthetic organic chemistry is the selective carbon-carbon bond formation.
Ingleson, 2007 Chemistry A European Journal, 23, 15889-15893
Tasler 2001 in Progress in the Chemistry of Organic Natural Products; ed.
The widespread usage of compounds of heterocycles used in the pharmaceutical sector is attributed to the copiousness of reaction methods that allow for modest alteration in structure of compounds.
Probably, the most significant transition in synthetic organic chemistry is the selective carbon-carbon bond formation.
Ingleson, 2007 Chemistry A European Journal, 23, 15889-15893
Tasler 2001 in Progress in the Chemistry of Organic Natural Products; ed.
Online since: October 2018
Authors: Yu.V. Yuferov, F.M. Zykov, E. Malshakova
Defects of Porous Self-Structured Anodic Alumina Oxide
on Industrial Aluminum Grades
Yu.V.
It was shown in [12-14] that the pores in the oxide layer can be combined into "domain" structures in which their orientation is close to an ideal hexagonal structure, which is applicable both to porous aluminum oxide and titanium oxide.
Obtaining the most ordered nanoporous self-structured oxide films requires preparation of the surface before both anodizing steps.
Stepniowski, Ethanol influence on arrangement and geometrical parameters of aluminum concaves prepared in a modified hard anodization for fabrication of highly ordered nanoporous alumina, Journal of Electroanalytical Chemistry 750 (2015) 79-88
Czujko, A comparative study of electrochemical barrier layer thinning for anodic aluminum oxide grown on technical purity aluminum, Journal of Electroanalytical Chemistry 741 (2015) 80-86
It was shown in [12-14] that the pores in the oxide layer can be combined into "domain" structures in which their orientation is close to an ideal hexagonal structure, which is applicable both to porous aluminum oxide and titanium oxide.
Obtaining the most ordered nanoporous self-structured oxide films requires preparation of the surface before both anodizing steps.
Stepniowski, Ethanol influence on arrangement and geometrical parameters of aluminum concaves prepared in a modified hard anodization for fabrication of highly ordered nanoporous alumina, Journal of Electroanalytical Chemistry 750 (2015) 79-88
Czujko, A comparative study of electrochemical barrier layer thinning for anodic aluminum oxide grown on technical purity aluminum, Journal of Electroanalytical Chemistry 741 (2015) 80-86
Online since: January 2012
Authors: Jin He Jiang
The Synthesis and Ion-exchange Property of Li+ Memorized
Spinel Al1.5Fe0.5(PO4)2
Jinhe Jiang
MicroScale Science Institute , Department of Chemistry and Chemical Engineering ,Weifang University, Weifang, 261061,China
Corresponding author.
In this paper, the discussion is about the synthesis, structure and ion exchange of the Al-Fe composite oxide inorganic ion exchanger of Li+ with the ability of memory and inverse spinel structure.
The structure of compound metal oxide Al1.5Fe0.5(PO4)2 crystallized at 720℃ was much perfect.
Rare Metal. 1999,18(2),143 [2] Z.S.Peng, Y.S.Yan, C.Y.Jiang, C.R.Wan, H.C.Gao: Advance on extraction lithium from salt lake, J.Chemistry Online. 1997,(12),11 [3] Y.F.Liu, Q.Feng, Kenta Ool: Li extraction/insertion reaction with LiAlMnO4 and LiFeMnO4 spinels in the Aqueous phase, J.Journal of Colloid and Interface Science. 1994,163(1),130 [4] H.Zhong: Prpperty of H2TiO3 type ion-exchangers and extraction of lithium from brine of natural gas wells, J.Chinese Journal of Applied Chemistry. 2000,17(3),307
In this paper, the discussion is about the synthesis, structure and ion exchange of the Al-Fe composite oxide inorganic ion exchanger of Li+ with the ability of memory and inverse spinel structure.
The structure of compound metal oxide Al1.5Fe0.5(PO4)2 crystallized at 720℃ was much perfect.
Rare Metal. 1999,18(2),143 [2] Z.S.Peng, Y.S.Yan, C.Y.Jiang, C.R.Wan, H.C.Gao: Advance on extraction lithium from salt lake, J.Chemistry Online. 1997,(12),11 [3] Y.F.Liu, Q.Feng, Kenta Ool: Li extraction/insertion reaction with LiAlMnO4 and LiFeMnO4 spinels in the Aqueous phase, J.Journal of Colloid and Interface Science. 1994,163(1),130 [4] H.Zhong: Prpperty of H2TiO3 type ion-exchangers and extraction of lithium from brine of natural gas wells, J.Chinese Journal of Applied Chemistry. 2000,17(3),307
Online since: April 2013
Authors: Adlan Akram Mohammad Mazuki, Nurhalawa Md Yusof, Rosiyah Yahya, Siti Murni M. Zawawi, Nuruzatulifah Asari Mansor, Osman Zakaria, Mohamad Fauzi Ahmad
Zawawi1,
Nuruzatulifah Asari Mansor1 and Osman Zakaria2
1Department of Chemistry, Faculty of Science, University of Malaya,
50603, Kuala Lumpur, Malaysia
2National Metrology Laboratory, SIRIM Berhad,
Lot PT4803, Bndr Baru Salak Tinggi, 43900, Sepang, Selangor, Malaysia.
This paper will study the effectiveness of each acid treatment as evaluated by TGA and the integrity of the MWCNTs structure as verified by Raman spectroscopy (RS).
Raman spectroscopy was used to analyze the structure of these samples.
This indicates that the oxidation process via acid treatment has a significant impact on the egzohedral graphitic wall structure of the carbon nanotubes [5].
[4] S.Repalle, J.Chen, V.Drozd, W.Choi: The Raman spectroscopic studies of aligned MWCNTs treated under high pressure and high temperature, Journal of Physics and Chemistry of Solids 71 (2010) p1150–1153
This paper will study the effectiveness of each acid treatment as evaluated by TGA and the integrity of the MWCNTs structure as verified by Raman spectroscopy (RS).
Raman spectroscopy was used to analyze the structure of these samples.
This indicates that the oxidation process via acid treatment has a significant impact on the egzohedral graphitic wall structure of the carbon nanotubes [5].
[4] S.Repalle, J.Chen, V.Drozd, W.Choi: The Raman spectroscopic studies of aligned MWCNTs treated under high pressure and high temperature, Journal of Physics and Chemistry of Solids 71 (2010) p1150–1153
Online since: July 2012
Authors: Hong Liang, Han Bo Zou, Qi Ying Wang, Zi Li Liu, Zu Zeng Qin, Sheng Zhou Chen, Yan Liu, Jian Jie Zhang
Preparation of MgAlY-LDO Solid Base Catalysts and their Catalytic Performance on the Synthesis of Isophorone via Acetone Condensation
Jian-jie Zhang1, 2, Zi-li Liu1, 2, a, Zu-zeng Qin3, Yan Liu1, 2, Qi-ying Wang2,
Han-bo Zou2,Sheng-zhou Chen2 and Hong Liang2
1 Key Laboratory of Ministry of Education for Water Quality Security and Protection in Pearl River Delta, Guangzhou University, Guangzhou 510006, China
2 School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China
3 School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
a Corresponding author: Prof.
However, the crystal structure of hydrotalcite was remained.
As the doping amount increased, the layer structure of hydrotalcite became distorted, thereby affecting the crystallinity of the hydrotalcite.
This behavior suggests that the crystal structure of MgO is affected by the Y3+ concentration-to some degree.
Duan: Chinese Journal of Inorganic Chemistry Vol. 18(2002), p. 1156 [13] Z.
However, the crystal structure of hydrotalcite was remained.
As the doping amount increased, the layer structure of hydrotalcite became distorted, thereby affecting the crystallinity of the hydrotalcite.
This behavior suggests that the crystal structure of MgO is affected by the Y3+ concentration-to some degree.
Duan: Chinese Journal of Inorganic Chemistry Vol. 18(2002), p. 1156 [13] Z.
Online since: July 2012
Authors: Ze Min Chen, Shu Yuan Yu, Cheng Gen Zhang, Hong Chao Wei
Structural and Electronic Properties of Small Silsesquioxanes: A DFT Study
Cheng-Gen Zhang1,a, Ze-Min Chen1 , Shu-Yuan Yu1,2,b , Hongchao Wei1
1 Department of Chemistry and Material Science, Langfang Normal College, Langfang 065000, China
2 College of Chemistry and Chemical Engineering, Graduate University of Chinese Academy of Sciences, Beijing 100049, China
achgzhang04@mails.gucas.ac.cn, byushuyuan05@mails.gucas.ac.cn
Keywords: Density functional theory, silsesquioxanes, substituent effect, HOMO–LUMO gaps
Abstract.
The study of the compounds containing Si-O bonds has been dominated for many years, and the field of silsesquioxanes chemistry has grown dramatically[20].
B3LYP/6-311+G(d, p) optimized structures of (Si2nO3nX2n) (n=1-5 and X=H, F, Me).
Results and Discussion The Structures of (Si2nO3nX2n) (n=1-5 and X=H, F, Me).
The properties of the molecule mainly depend on the geometrical structure.
The study of the compounds containing Si-O bonds has been dominated for many years, and the field of silsesquioxanes chemistry has grown dramatically[20].
B3LYP/6-311+G(d, p) optimized structures of (Si2nO3nX2n) (n=1-5 and X=H, F, Me).
Results and Discussion The Structures of (Si2nO3nX2n) (n=1-5 and X=H, F, Me).
The properties of the molecule mainly depend on the geometrical structure.
Online since: December 2012
Authors: Shi Biao Zhou, Yuan Dao Chen, An Guo Xiao, Yong Bing Zhuan, Yun Wang
Then, the bromide of star-shaped polymer, initiated the atom transfer radical polymerization (ATRP) of oligo(ethylene oxide) methacrylate (OEOMA) and the star-shaped polymer containing the arms of PCL-b-POEOMA was synthesized ,and the characterization of polymer structure was investigated by NMR.
1.
Now, facile synthesis of the amphiphilic star-shaped polymer is considered very important in polymer chemistry[9].
The bromide of star-shaped polymer, initiated the atom transfer radical polymerization (ATRP) of oligo(ethylene oxide) methacrylate (OEOMA) and the star-shaped polymer containing the arms of PCL-b-POEOMA was synthesized ,and the characterization of polymer structure was investigated by 1H-NMR.
Then, the bromide of star-shaped polymer, initiated the atom transfer radical polymerization (ATRP) of oligo(ethylene oxide) methacrylate (OEOMA) and the star-shaped polymer containing the arms of PCL-b-POEOMA was synthesized ,and the characterization of polymer structure was investigated by NMR.
Acknowledgments This work was supported by the construct program of the key discipline in Hunan province(Applied Chemistry).
Now, facile synthesis of the amphiphilic star-shaped polymer is considered very important in polymer chemistry[9].
The bromide of star-shaped polymer, initiated the atom transfer radical polymerization (ATRP) of oligo(ethylene oxide) methacrylate (OEOMA) and the star-shaped polymer containing the arms of PCL-b-POEOMA was synthesized ,and the characterization of polymer structure was investigated by 1H-NMR.
Then, the bromide of star-shaped polymer, initiated the atom transfer radical polymerization (ATRP) of oligo(ethylene oxide) methacrylate (OEOMA) and the star-shaped polymer containing the arms of PCL-b-POEOMA was synthesized ,and the characterization of polymer structure was investigated by NMR.
Acknowledgments This work was supported by the construct program of the key discipline in Hunan province(Applied Chemistry).