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Online since: October 2011
Authors: Yun Fei Tang, Rong Chang Wang, Li Min Ma, Jian Fu Zhao
McGuire etchad proved that the high molecular weight (7.5-9×106Da) polyacrylamide flocculant structure type (anionic polyacrylamide) had an effect on the interfacial chemistry, rheology and dewaterability [8].
The effect of polymer structure type, pH and shear on the interfacial chemistry, theology and dewaterability of model iron oxide dispersions.
The effect of polymer structure type, pH and shear on the interfacial chemistry, theology and dewaterability of model iron oxide dispersions.
Online since: October 2007
Authors: Adam Worsztynowicz, Elzbieta Tomaszewicz, Slawomir M. Kaczmarek
Piastow 17, 70-310 Szczecin, Poland
2
Department of Inorganic and Analytical Chemistry, Szczecin University of Technology,
Al.
Moreover, a group of mixed oxides with the wolframite structure (ABO4 where A=Ni(II), Co(II), etc, B=W) has been studied for its interesting catalytic properties [4].
The increase in the peak-to-peak width may arise due to the existence of nickel ion clusters in the structure.
A: Chemistry, Vol. 148 (2002) p. 65 [4] G.
Moreover, a group of mixed oxides with the wolframite structure (ABO4 where A=Ni(II), Co(II), etc, B=W) has been studied for its interesting catalytic properties [4].
The increase in the peak-to-peak width may arise due to the existence of nickel ion clusters in the structure.
A: Chemistry, Vol. 148 (2002) p. 65 [4] G.
Online since: September 2013
Authors: Ru Qing Chen
Introduction
With the development of modern industry and technology, the structure of process industry system becomes more and more complex.
Its main purpose is to detect the intrinsic structure embedded in the high dimensional data space, which have been a focused research field in machine learning and pattern recognition [17].From statistical point of view, ML eliminates the pre-knowledge hypotheses of mutual independence and Gaussian distribution of data, captures the dynamic information and discovers the inherent change rule of data.
Process monitoring based on independent component analysis- principal component analysis (ICA-PCA) and similarity factors, Industrial & Engineering Chemistry Research.46 (2007) 2054- 2063
Statistical monitoring of dynamic multivariate processes-part 2.identifying fault magnitude and signature, Industrial & Engineering Chemistry Research.45 (2006) 1677-1688
Its main purpose is to detect the intrinsic structure embedded in the high dimensional data space, which have been a focused research field in machine learning and pattern recognition [17].From statistical point of view, ML eliminates the pre-knowledge hypotheses of mutual independence and Gaussian distribution of data, captures the dynamic information and discovers the inherent change rule of data.
Process monitoring based on independent component analysis- principal component analysis (ICA-PCA) and similarity factors, Industrial & Engineering Chemistry Research.46 (2007) 2054- 2063
Statistical monitoring of dynamic multivariate processes-part 2.identifying fault magnitude and signature, Industrial & Engineering Chemistry Research.45 (2006) 1677-1688
Online since: February 2015
Authors: Yi Ru Peng, Xiao Dong Zhu, Zhen Zhen Chen, Jun Ri Wen, Ke Qin Wu, Xiong Wei Wang
Synthesis and Photophysical Property of Polyion Complex Micelle Incorporating Phthalocyanine Zinc(II) Bearing Benzyl Ether Dendritic Substituents with Nitro-terminal Group
Xiaodong ZHU1,a, Zhenzhen CHEN2,Keqin WU2, Junri WEN2,
Xiongwei WANG2 and Yiru PENG2,b*
1,2College of Chemistry and Materials Science, Fujian Provincial Key Laboratory of Polymer Materials, Fujian Normal University, Fuzhou 350007,China
a1053474738@qq.com, byirupeng@fjnu.edu.cn
Corresponding author: Yiru PENG
Keywords: phthalocyanines Zinc(II); polymeric micelles; dendritic phthalocyanine
Abstract: A new phthalocyanine Zinc(II) bearing benzyl ether dendritic substituents with nitro-terminal group: tetra-{3,5-[di-(4-nitro benzyloxy) benzyloxy]} Phthalocyanine Zinc(II) (ZnPc(NO2)8), was synthesis and characterized by IR, 1HNMR, MALDI-TOF-MS and UV/Vis.
Polyamide-amine (PAMAM) dendritic macromolecules was synthesized by Tomalia etc for the first time since 1985 [5], dendritic macromolecules with its special highly branched structure and controllability.
Amphiphilic block copolymers has biocompatible and biodegradable, as a drug targeting carrier apply to photodynamic therapy, has attracted much attention in the medical field gradually [9], amphiphilic block copolymers due to hydrophobic interaction self-assemble into "core-shell" structure of micelles in water.
Journal of Medicinal Chemistry, 2008, Vol. 51, No. 8
Polyamide-amine (PAMAM) dendritic macromolecules was synthesized by Tomalia etc for the first time since 1985 [5], dendritic macromolecules with its special highly branched structure and controllability.
Amphiphilic block copolymers has biocompatible and biodegradable, as a drug targeting carrier apply to photodynamic therapy, has attracted much attention in the medical field gradually [9], amphiphilic block copolymers due to hydrophobic interaction self-assemble into "core-shell" structure of micelles in water.
Journal of Medicinal Chemistry, 2008, Vol. 51, No. 8
Preparation and Characterization of Polystyrene/TiO2 Core-Shell Nanospheres via Suspension Technique
Online since: November 2013
Authors: Hossein Behniafar, Masoud Shaabanzadeh, Mona Shahshojaei
Preparation and characterization of polystyrene/TiO2 core-shell nanospheres via suspension technique
Mona Shahshojaei1,a*, Hossein Behniafar2,b
and Masoud Shaabanzadeh3,c
1Faculty of Sciences, Islamic Azad University-Damghan Branch, Damghan, Iran
2School of Chemistry, Damghan University, 36715-364, Damghan, Iran
3Department of chemistry, Islamic Azad University-Damghan Branch, Damghan, Iran
aEmail: mshahshojai92@yahoo.com
bEmail: h_behniafar@du.ac.ir
cEmail: masoud.shaabanzadeh@gmail.com
Keywords: Polystyrene; Suspension technique; Nano-TiO2 particles;
Abstract.
On the surface of TiO2 nanoparticle, there are a lot of free hydroxyls that can react with those active –NCO groups of MDI to form a surface complex such as the structure –NHCOOTi–.
FT-IR spectroscopy The chemical structures of the synthesized materials involving TiO2-MDI, Pure PS, PS/TiO2, and PS/TiO2-MDI together with the spectra of nano-TiO2 and MDI were characterized with FT-IR spectroscopy as shown in Fig. 2.
On the surface of TiO2 nanoparticle, there are a lot of free hydroxyls that can react with those active –NCO groups of MDI to form a surface complex such as the structure –NHCOOTi–.
FT-IR spectroscopy The chemical structures of the synthesized materials involving TiO2-MDI, Pure PS, PS/TiO2, and PS/TiO2-MDI together with the spectra of nano-TiO2 and MDI were characterized with FT-IR spectroscopy as shown in Fig. 2.
Online since: December 2014
Authors: Evaldo José Corat, Vladimir Jesus Trava-Airoldi, Fernanda Roberto Marciano, Anderson Oliveira Lobo, Erica Freire Antunes, Vagner Eduardo Caetano, Eduardo Saito
Sales, H.V.M Hamelers, P.M Biesheuvel: The Journal of Physical Chemistry Letters Vol. 3 (12) (2012), p. 1613.
],clean energy generation[[]D.A.
Shi: Smart materials and structures Vol. 15 (3) (2006), p. 737. ].
Corat: Theoretical Chemistry Accounts Vol. 130 (2011), p. 1061. ].
These kind of materials presents four specific signnals obtained with Ar Laser (514,5 nm):D (∼1352cm−1), G (∼1582cm−1), D’(∼1600cm−1) and G’(∼2700cm−1).The G`band with relative high intensity compared with G band can be attributed to ordenated nanographite or spaced interlayer separation between graphene planes from turbostratic structure [15,16,[]E.F.
Shi: Smart materials and structures Vol. 15 (3) (2006), p. 737. ].
Corat: Theoretical Chemistry Accounts Vol. 130 (2011), p. 1061. ].
These kind of materials presents four specific signnals obtained with Ar Laser (514,5 nm):D (∼1352cm−1), G (∼1582cm−1), D’(∼1600cm−1) and G’(∼2700cm−1).The G`band with relative high intensity compared with G band can be attributed to ordenated nanographite or spaced interlayer separation between graphene planes from turbostratic structure [15,16,[]E.F.
Online since: June 2014
Authors: Viktoriya Viktorovna Nelubova, Nataliya Igorevna Altynnik, Iliya Igorevich Podgorniy, Valeria V. Strokova
In this regard there is a need of correction of structure of the complex modifier by introduction of a new plasticizing additive.
This type of plasticizer differs with its universality and wide usage in suspensions of various structure.
While loading the system with dynamic power (the gradient of shear rate is higher than 150 s-1) its structuring is noted.
That leads to formation of clusters in structure of NM and to modifier jelling.
Chemistry and chemical technology.
This type of plasticizer differs with its universality and wide usage in suspensions of various structure.
While loading the system with dynamic power (the gradient of shear rate is higher than 150 s-1) its structuring is noted.
That leads to formation of clusters in structure of NM and to modifier jelling.
Chemistry and chemical technology.
Online since: March 2011
Authors: Tao Pan, Hua Zhou Chen, Ling Ling Wu
Introduction
Fourier transform infrared spectroscopy (FTIR) and attenuated total reflection (ATR) technology were effective determination methods for structure and content of components [1].
Wilson: Trends in Analyical Chemistry Vol. 9 (1990), p. 127-131 [3] K.
Chen, et al.: Chinese Joumal of Analytical Chemistry Vol. 38 No. 3 (2010), p. 342-346 [9] A.
Golay: Analytical Chemistry Vol. 36 No. 8 (1964), p. 1627-1637
Wilson: Trends in Analyical Chemistry Vol. 9 (1990), p. 127-131 [3] K.
Chen, et al.: Chinese Joumal of Analytical Chemistry Vol. 38 No. 3 (2010), p. 342-346 [9] A.
Golay: Analytical Chemistry Vol. 36 No. 8 (1964), p. 1627-1637
Online since: January 2018
Authors: Albert Grino, Eduardo Chan, Delia Senoro
The raw clay was beneficiated; sodium activated and intercalated with quaternary alkylammonium cations to expand the lattice structures of montmorillonites [24].
Dey: Materials Chemistry and Physics 190 (2017) p. 175 - 186 [16] Information on http://www.imacroof.com.ph [17] M.
Ahmad: Materials Chemistry and Physics (2016) 198 (2017) p. 57 - 65 [29] Z.
Okai: Journal of Polymer Science Part A – Polymer Chemistry 35 (1997) p. 2289 - 2294 [34] K.
Dey: Materials Chemistry and Physics 190 (2017) p. 175 - 186 [16] Information on http://www.imacroof.com.ph [17] M.
Ahmad: Materials Chemistry and Physics (2016) 198 (2017) p. 57 - 65 [29] Z.
Okai: Journal of Polymer Science Part A – Polymer Chemistry 35 (1997) p. 2289 - 2294 [34] K.
Online since: August 2019
Authors: Emmanuel Iwuoha, Milua Masikini, Michira Immaculate Nyambura, Ochieng Phyllis Emelda
Biosynthesised Zinc Oxide Nanoparticles for Ethanol Chemical Sensor
Ochieng Phyllis Emelda1,a*, Michira Immaculate Nyambura1,b,
Milua Masikini2,c and Iwuoha Emmanuel2,d
1Department of Chemistry, University of Nairobi, P.O.BOX 30197-00100, Nairobi, Kenya
2Sensor Research Laboratory, Department of Chemistry, University of Western Cape, P.O BOX Private Bag, Belville, Cape Town, South Africa
apmelder1@gmail.com, bimichira@uonbi.ac.ke, cmasikinimilua@gmail.com, deiwuoha@uwc.ac.za
Keywords: Ethanol Sensor, Zinc oxide Nanoparticles, Spathodea Campanulata
Abstract.
[14] Gunalan, S., Sivaraj, R., and Rajendran, V., (2011), Green synthesis of zinc oxide nanoparticles by aloe barbadensis miller leaf extract: Structure and optical properties.
[20] Christian, G. (2004) Analytical Chemistry, 6Th Edition.
[14] Gunalan, S., Sivaraj, R., and Rajendran, V., (2011), Green synthesis of zinc oxide nanoparticles by aloe barbadensis miller leaf extract: Structure and optical properties.
[20] Christian, G. (2004) Analytical Chemistry, 6Th Edition.