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Online since: December 2025
Authors: Ester Putri Novianty, Rizki Amalia, Sperisa Distantina, Mujtahid Kaavessina
Its molecular structure should be modified by grafting and cross-linking to increase its attractiveness to water.
Results and Discussion Effect of SCB-AA ratio on swelling degree The molecular structure after irradiation treatment is shown in Fig. 4.
Cellulose Acrylamide SCB-g-PAA Fig. 4 Molecular structure of SCB-g-PAA.
In addition, there is an increase in the O-H, C-H, and C=O groups in the grafted polymer structure.
J, Principle of polymer chemistry, Cornell University Press, New York, 1953
Results and Discussion Effect of SCB-AA ratio on swelling degree The molecular structure after irradiation treatment is shown in Fig. 4.
Cellulose Acrylamide SCB-g-PAA Fig. 4 Molecular structure of SCB-g-PAA.
In addition, there is an increase in the O-H, C-H, and C=O groups in the grafted polymer structure.
J, Principle of polymer chemistry, Cornell University Press, New York, 1953
Online since: July 2010
Authors: Dibyendu Ganguli
In parallel, their atomic structures have also
been revealed or suggested in great details [8-10].
The first and conceptually simple indication that an amorphous atomic structure need not be random comes from the fact that depending on the degree of covalency in the structure-building polyhedra, they can exhibit so-called "directional bonds".
It has been observed [43] that disorder in the structure of nanoclusters could be a general feature.
Basically disordered structures are exhibited by V15 - V17.
Rao: Structural Chemistry of Glasses (Elsevier, Oxford, 2002)
The first and conceptually simple indication that an amorphous atomic structure need not be random comes from the fact that depending on the degree of covalency in the structure-building polyhedra, they can exhibit so-called "directional bonds".
It has been observed [43] that disorder in the structure of nanoclusters could be a general feature.
Basically disordered structures are exhibited by V15 - V17.
Rao: Structural Chemistry of Glasses (Elsevier, Oxford, 2002)
Online since: February 2024
Authors: Irena Janotova, Peter Svec, Dusan Janičkovič, Lyubov Romaka, Rada Novakovic, Viktor Poverzhuk, Yuriy Plevachuk
According to the well-known concept of multicomponent high-entropy alloys, high entropy of mixing can stabilize the formation of solid solutions (simple bcc or fcc crystal structure) during solidification.
It is clear that the peculiar non-monotonous variations of the physical properties with composition of liquid alloys are basically caused by changes in their electronic and/or atomic structure, like those of solids.
For example, violation of the homogeneity of the Cu60Sn40 melt during cooling below 1173 K was explained by the appearance of two kinds of atomic structures, Cu3Sn and Sn.
The knowledge of thermodynamic properties and the equilibrium phase diagrams of liquid alloy systems makes possible to calculate their surface properties taking into account the structure of the liquid phase.
Electrophysical and structure-sensitive properties of liquid Ga–In alloys.
It is clear that the peculiar non-monotonous variations of the physical properties with composition of liquid alloys are basically caused by changes in their electronic and/or atomic structure, like those of solids.
For example, violation of the homogeneity of the Cu60Sn40 melt during cooling below 1173 K was explained by the appearance of two kinds of atomic structures, Cu3Sn and Sn.
The knowledge of thermodynamic properties and the equilibrium phase diagrams of liquid alloy systems makes possible to calculate their surface properties taking into account the structure of the liquid phase.
Electrophysical and structure-sensitive properties of liquid Ga–In alloys.
Online since: September 2021
Authors: Paul Eric C. Maglalang, Blessie A. Basilia, Araceli Magsino Monsada
Morphological Structure.
Furthermore, in Figures, 5a to 5d, the morphological structures of coco-coir, pure PLA (Fig. 5c), and PLA-Coir composite were investigated.
The structure of the coco-coir still possesses a smooth surface as shown in Fig. 5a.
However, several voids were also observed in the internal structure of some 3D printed composite due to under extrusion caused by the inconsistent filling process.
Delloyd's Chemistry Resources, Reagents and Instrumentation.
Furthermore, in Figures, 5a to 5d, the morphological structures of coco-coir, pure PLA (Fig. 5c), and PLA-Coir composite were investigated.
The structure of the coco-coir still possesses a smooth surface as shown in Fig. 5a.
However, several voids were also observed in the internal structure of some 3D printed composite due to under extrusion caused by the inconsistent filling process.
Delloyd's Chemistry Resources, Reagents and Instrumentation.
Online since: October 2013
Authors: Dong Xiang, Guang Hong Duan, Peng Mou, Zu Fu Pang, Dan Feng Long, Ji Ping Yang
According to the assembly structure, the PCBA can be divided into two types.
Obviously, the different structures of waste PCBA will directly lead to different disassembly strategies.
The inner structure of IC chip is shown in Fig. 19 , and there are no die crack, passivation layer damage, metalization layer corrosion, bonding point damage and other defects.
Processes and apparatus aimed at reusing components have been developed according to the structure and assembly feature of waste PCBA, which have been an important way to recycle the waste PCBA with high value.
Industrial & Engineering Chemistry Research,50, 11763-11769 [8] Xiang, D. et al., 2007.
Obviously, the different structures of waste PCBA will directly lead to different disassembly strategies.
The inner structure of IC chip is shown in Fig. 19 , and there are no die crack, passivation layer damage, metalization layer corrosion, bonding point damage and other defects.
Processes and apparatus aimed at reusing components have been developed according to the structure and assembly feature of waste PCBA, which have been an important way to recycle the waste PCBA with high value.
Industrial & Engineering Chemistry Research,50, 11763-11769 [8] Xiang, D. et al., 2007.
Online since: October 2015
Authors: Marek Szajt, Ismena Dzida
Era of new discoveries with regard to physics, electricity or chemistry significantly contributed to technological development.
Considering the structure of university students and chosen fields of study we can expect rapid technological development in the nearest future.
The disadvantage does not only lie in the lowered outlays in the European scale but also in improper structure of financing.
Considering the structure of the Polish electrotechnical market the greatest share is held by the telecommunications devices and it is 34%.
In the structures of the organization there are eighty companies from forty countries of the world.
Considering the structure of university students and chosen fields of study we can expect rapid technological development in the nearest future.
The disadvantage does not only lie in the lowered outlays in the European scale but also in improper structure of financing.
Considering the structure of the Polish electrotechnical market the greatest share is held by the telecommunications devices and it is 34%.
In the structures of the organization there are eighty companies from forty countries of the world.
Online since: June 2019
Authors: Damian C. Onwudiwe
Department of Chemistry, School of Mathematics and Physical Sciences, Faculty of Natural and Agricultural Science, North-West University, Mafikeng campus, Private Bag X2046, Mmabatho 2735, South Africa.
It is capable of absorbing in the range which spans the entire visible to the near-infrared of the solar spectrum, and still maintains its structure and electronic integrity [5].
The structure of Bi2S3 is made up of a lamellar arrangement of infinite chains of alternating Bi3+ and S2−, which tends to crystalize in an orthorhombic system and in Pcnm space group [6].
Powder XRD measurements confirmed that both Bi2S3 obtained in ethylene glycol and dimethyl formamide solvents are the same orthorhombic structure.
Marsal, Interplay Between Morphology, Optical Properties, and Electronic Structure of Solution-Processed Bi2S3 Colloidal Nanocrystals, J.
It is capable of absorbing in the range which spans the entire visible to the near-infrared of the solar spectrum, and still maintains its structure and electronic integrity [5].
The structure of Bi2S3 is made up of a lamellar arrangement of infinite chains of alternating Bi3+ and S2−, which tends to crystalize in an orthorhombic system and in Pcnm space group [6].
Powder XRD measurements confirmed that both Bi2S3 obtained in ethylene glycol and dimethyl formamide solvents are the same orthorhombic structure.
Marsal, Interplay Between Morphology, Optical Properties, and Electronic Structure of Solution-Processed Bi2S3 Colloidal Nanocrystals, J.
Online since: August 2021
Authors: Azwar Manaf, Novrita Idayanti, Dedi Dedi
These two magnetic phases in a composite structure must have nanometer-sized crystallites with such magnetic properties.
This shows that the polycrystalline structure becomes monocrystalline.
Two structures are apparent in the composite: a large hexagonal morphology and small equiaxed particle structure.
Andersen, MATERIALS CHEMISTRY: Expanding the tunability and applicability of exchange-coupled/decoupled magnetic nanocomposites, Mater.
Ha, Structure and Magnetic Properties of SrFe12O19/CoFe2O4 Nanocomposite Ferrite, J.
This shows that the polycrystalline structure becomes monocrystalline.
Two structures are apparent in the composite: a large hexagonal morphology and small equiaxed particle structure.
Andersen, MATERIALS CHEMISTRY: Expanding the tunability and applicability of exchange-coupled/decoupled magnetic nanocomposites, Mater.
Ha, Structure and Magnetic Properties of SrFe12O19/CoFe2O4 Nanocomposite Ferrite, J.
Online since: October 2012
Authors: Kai Liu, Jun Luo, Xiao Shan Jia, Qi Jing Luo, Zhi Hua Pang, Zhen Xing Wang
The structure and morphology of the materials were characterized by X-ray diffraction(XRD) and scanning electron microscopy(SEM).
The structure and morphology of the materials were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM).
SEM was conducted to compare the surface morphologies and structures of different materials.
Journal of Agricultural and Food Chemistry , Vol.56(2008), pp.1336-1342
The structure and morphology of the materials were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM).
SEM was conducted to compare the surface morphologies and structures of different materials.
Journal of Agricultural and Food Chemistry , Vol.56(2008), pp.1336-1342
Online since: July 2010
Authors: T. Maiyalagan, Sivakumar Pasupathi
Maiyalagan and Sivakumar Pasupathi *
South African Institute for Advanced Materials Chemistry (SAIAMC), University of the
Western Cape, Modderdam Road, Bellville 7535, Cape Town, South Africa.
Chemical structure of Nafion The proton conductivity in Nafion is strongly dependent upon its water content.
Fig. 7, Chemical structure of poly (2,2"-m-(phenylene)-5,5"-bibenzimidzole) and ABPBI.
Hietala, Characterization of Poly (vinylidene-graft-poly (styrene sulfonic acid) Polymer Electrolyte Membrane, doctoral thesis, University of Helsinki, Department of Chemistry, Helsinki (1999)
Nørskov: Nature Chemistry, Vol. 1 (2009), p. 552 [145] H.A.
Chemical structure of Nafion The proton conductivity in Nafion is strongly dependent upon its water content.
Fig. 7, Chemical structure of poly (2,2"-m-(phenylene)-5,5"-bibenzimidzole) and ABPBI.
Hietala, Characterization of Poly (vinylidene-graft-poly (styrene sulfonic acid) Polymer Electrolyte Membrane, doctoral thesis, University of Helsinki, Department of Chemistry, Helsinki (1999)
Nørskov: Nature Chemistry, Vol. 1 (2009), p. 552 [145] H.A.