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Online since: July 2020
Authors: Nai Sheng Guo, Shi Gang Yan, Xin Jin, Si Meng Yan
After the paper uses a unique domestic natural rubber Eucommia to establish a chemical link between the asphalt and the solubility of the powder, analyzed the structure of the double bond vulcanization gutta percha and the solubility of the powder, gutta percha and asphalt amino group of the reaction maleic anhydride, and so gutta appreciate and a chemical link.
TOR is to use the principle of the double bond structure octene polymer, sulfur and the sulfur in the asphalt surface of the chip cross-linked rubber to form a large network structure consisting of cyclic and linear polymers, the pitch change microstructure and physical properties, SBS modified asphalt somewhat similar principle, so as to solve the problem of rubber powder free not react chemically in the bitumen [7].
Principle of Rubber Powder Asphalt Reaction Network Grafted with Eucommia Gum Gutta percha is the unique natural rubber, but which itself has a double bond structure, vulcanization crosslink, and asphalt to form a blend system of a network, functions as the modified asphalt [8].
Fig. 2 Digital photo of dry rubber powder mixed with Eucommia ulmoides TF found in previous studies, it can be vulcanized gutta modified asphalt, but no image is formed grid structure as SBS modified asphalt and asphalt, high temperature stability and therefore not vulcanized gutta modified asphalt, the softening point of not to 60 ℃, only a low-temperature region [9].
Progress in Chemistry, 27(1), 47-58
TOR is to use the principle of the double bond structure octene polymer, sulfur and the sulfur in the asphalt surface of the chip cross-linked rubber to form a large network structure consisting of cyclic and linear polymers, the pitch change microstructure and physical properties, SBS modified asphalt somewhat similar principle, so as to solve the problem of rubber powder free not react chemically in the bitumen [7].
Principle of Rubber Powder Asphalt Reaction Network Grafted with Eucommia Gum Gutta percha is the unique natural rubber, but which itself has a double bond structure, vulcanization crosslink, and asphalt to form a blend system of a network, functions as the modified asphalt [8].
Fig. 2 Digital photo of dry rubber powder mixed with Eucommia ulmoides TF found in previous studies, it can be vulcanized gutta modified asphalt, but no image is formed grid structure as SBS modified asphalt and asphalt, high temperature stability and therefore not vulcanized gutta modified asphalt, the softening point of not to 60 ℃, only a low-temperature region [9].
Progress in Chemistry, 27(1), 47-58
Online since: January 2026
Authors: Nandang Mufti, Rini Zaqiyah, Silvi Rahmawati Wibowo, Fadilah Wulan Cahyani, Lathifatul Lu'lu' Musyarrofah
X-Ray Diffraction (XRD) analysis revealed an amorphous rGO structure with a peak at 25°.
SEM Images and Porosity Analysis of rGO Based on Figure 3, the surface morphology of rGO appears as coarse agglomerates with an irregular or random structure and varying surface textures.
This indicates the agglomeration of structures with wrinkled, crumpled surfaces that form folds [29, 30], where the wrinkles signify that the material is a two-dimensional (2D) membrane [31].
Zhu et al., “Structure and Electronic Transport in Graphene Wrinkles,” Nano Lett., vol. 12, no. 7, pp. 3431–3436, Jul. 2012, doi: 10.1021/nl300563h
Borghei et al., “Synthesis of Multi-Application Activated Carbon from Oak Seeds by KOH Activation for Methylene Blue Adsorption and Electrochemical Supercapacitor Electrode,” Arabian Journal of Chemistry, vol. 14, no. 2, p. 102958, Feb. 2021, doi: 10.1016/j.arabjc.2020.102958
SEM Images and Porosity Analysis of rGO Based on Figure 3, the surface morphology of rGO appears as coarse agglomerates with an irregular or random structure and varying surface textures.
This indicates the agglomeration of structures with wrinkled, crumpled surfaces that form folds [29, 30], where the wrinkles signify that the material is a two-dimensional (2D) membrane [31].
Zhu et al., “Structure and Electronic Transport in Graphene Wrinkles,” Nano Lett., vol. 12, no. 7, pp. 3431–3436, Jul. 2012, doi: 10.1021/nl300563h
Borghei et al., “Synthesis of Multi-Application Activated Carbon from Oak Seeds by KOH Activation for Methylene Blue Adsorption and Electrochemical Supercapacitor Electrode,” Arabian Journal of Chemistry, vol. 14, no. 2, p. 102958, Feb. 2021, doi: 10.1016/j.arabjc.2020.102958
Online since: January 2019
Authors: Valeria Daniele, Giuliana Taglieri, Ludovico Macera
In particular, we obtained pure and crystalline magnesium and calcium hydroxide suspensions, showing the typical brucite crystal structure with a hexagonal lamellar morphology and dimensions generally <100 nm.
In particular, all the Bragg peaks observed in MH and CH suspensions were well matched by the hexagonal structure of brucite (Mg(OH)2, ICSD pattern #98-008-9823) and by the hexagonal structure of portlandite (Ca(OH)2, ICSD pattern #98-020-2220), respectively.
As also observed for the lamellar morphologies, the rod-like structures were constituted by a self-assembly of monodispersed primary nanoparticles with dimensions up to 15 nm.
Baglioni, Nanoparticles for Cultural Heritage Conservation: Calcium and Barium Hydroxide Nanoparticles for Wall Painting Consolidation, Chemistry - A European Journal 16(31) (2010) 9374-9382
Pandi, Raman and infrared spectra of carbonates of calcite structure, J Raman Spectrosc. 37 (2006) 892-899
In particular, all the Bragg peaks observed in MH and CH suspensions were well matched by the hexagonal structure of brucite (Mg(OH)2, ICSD pattern #98-008-9823) and by the hexagonal structure of portlandite (Ca(OH)2, ICSD pattern #98-020-2220), respectively.
As also observed for the lamellar morphologies, the rod-like structures were constituted by a self-assembly of monodispersed primary nanoparticles with dimensions up to 15 nm.
Baglioni, Nanoparticles for Cultural Heritage Conservation: Calcium and Barium Hydroxide Nanoparticles for Wall Painting Consolidation, Chemistry - A European Journal 16(31) (2010) 9374-9382
Pandi, Raman and infrared spectra of carbonates of calcite structure, J Raman Spectrosc. 37 (2006) 892-899
Online since: August 2018
Authors: Zhen Ye Zhu
By amination treatment, carbon nanotubes become more dispersed, thinner and more uniform, and more defect structures are found in MWCNTs-NH2.
Wang et al. reported that the 3-D hierarchical structure of graphene, where CNTs were used as the spacer between the graphene sheets, had been prepared by a hydrothermal method, exhibiting a high specific capacitance of 318 F.g-1 [19].
On the basis of the mutual complementarity in structures and properties, a three-dimensional CNT/graphene oxide network is regarded to be an ideal nanostructured hybrid for supercapacitors [21-24].
In this work, we develop a simply method for the synthesis of a carbon macroscopic structure, using MWCNTs-NH2/GO-MnO2 nanocomposites as electrode material for supercapacitors.
[31] Reddy A L M, Shaijumon M M, Gowda S R, Multisegmented Au-MnO2/Carbon Nanotube Hybrid Coaxial Arrays for High-Power Supercapacitor Applications, Journal of Physical Chemistry C. 117(42) (2010) 658-663.
Wang et al. reported that the 3-D hierarchical structure of graphene, where CNTs were used as the spacer between the graphene sheets, had been prepared by a hydrothermal method, exhibiting a high specific capacitance of 318 F.g-1 [19].
On the basis of the mutual complementarity in structures and properties, a three-dimensional CNT/graphene oxide network is regarded to be an ideal nanostructured hybrid for supercapacitors [21-24].
In this work, we develop a simply method for the synthesis of a carbon macroscopic structure, using MWCNTs-NH2/GO-MnO2 nanocomposites as electrode material for supercapacitors.
[31] Reddy A L M, Shaijumon M M, Gowda S R, Multisegmented Au-MnO2/Carbon Nanotube Hybrid Coaxial Arrays for High-Power Supercapacitor Applications, Journal of Physical Chemistry C. 117(42) (2010) 658-663.
Online since: February 2014
Authors: Abdullah Huda, S. Shaari, Azimah Omar, M.R. Razali, M.R. Taha
The thin films were annealed at 150 °C and produced heterogeneous structure of CNTs and ZnO nanoparticles.
Figure 4 (a) exhibits a pristine structure of non-acid treatment SWCNTs with combined random-coil structure.
Besides that, the ZnO-SWCNTs internal structures and lattice spacing were analyzed by the TEM results.
Materials Chemistry and Physics 130: 598-602
Growth and structure of carbon nanotubes produced by thermal chemical vapor deposition.
Figure 4 (a) exhibits a pristine structure of non-acid treatment SWCNTs with combined random-coil structure.
Besides that, the ZnO-SWCNTs internal structures and lattice spacing were analyzed by the TEM results.
Materials Chemistry and Physics 130: 598-602
Growth and structure of carbon nanotubes produced by thermal chemical vapor deposition.
Online since: October 2010
Authors: Ashish D. Patel, Gernant E. Maurer
At elevated temperatures metallurgical structures are constantly changing.
Aircraft gas turbines components, particularly rotating parts, are generally not welded structures.
Power generation structures, on the other hand, require massive amounts of welds due to their complexity and size.
The preform was successfully made with a resulting structure that was 100% dense, as shown in Fig. 10.
Maurer, Effects of Heat Treatment and Chemistry on the Long-Term Phase Stability of a High Strength Nickel-Based Superalloy, Superalloys 1992.
Aircraft gas turbines components, particularly rotating parts, are generally not welded structures.
Power generation structures, on the other hand, require massive amounts of welds due to their complexity and size.
The preform was successfully made with a resulting structure that was 100% dense, as shown in Fig. 10.
Maurer, Effects of Heat Treatment and Chemistry on the Long-Term Phase Stability of a High Strength Nickel-Based Superalloy, Superalloys 1992.
Online since: May 2016
Authors: Stefan Ioan Voicu, Mădălina Georgiana Albu, Mihaela V. Ghica, Aiza A. Watzlawek, Elena Olaret, Stefania Marin, Minodora Maria Marin, Elena Danila, Ciprian Chelaru, Cristina Elena Dinu-Pîrvu, Alice Geanina Simonca
The addition in different concentrations of dextran and MgO leads to more compact structures and improves stability of collagenic matrices.
Biocompatibility is the most required property of these materials, but in the same time the structure is also important.
This can be explained by the fact that the spongious structure became denser when dextran is added.
More compact structures were obtained for sponges which contain niflumic acid, because of its crosslinking with collagen.
The optical microscopy images show the difference between structures of sponges with (Figure 4b) and without MgO filler (Figure 4a).
Biocompatibility is the most required property of these materials, but in the same time the structure is also important.
This can be explained by the fact that the spongious structure became denser when dextran is added.
More compact structures were obtained for sponges which contain niflumic acid, because of its crosslinking with collagen.
The optical microscopy images show the difference between structures of sponges with (Figure 4b) and without MgO filler (Figure 4a).
Online since: March 2024
Authors: Markus Diantoro, Nasikhudin Nasikhudin, Siti Sendari, Ade Siyanti Nurul Hidayah, Nuviya Illa Muthi Aturroifah, Worawat Meevasana, Santi Maensiri
The results of SEM showed the addition of CuCrO2 and structure modification of silicon into porous caused increasing value of porosity.
According to this concern, the solution to improve Si-based anodes is to change the structure of silicon.
It showed that the modification of silicon structure into porous could increase retention or anode stability [25].
XRD characterization is used to analyze the structure, size, and crystal phases formed in a material.
Sari, presented at the 2ND INTERNATIONAL CONFERENCE ON CHEMISTRY, CHEMICAL PROCESS AND ENGINEERING (IC3PE), Yogyakarta, Indonesia (2018)
According to this concern, the solution to improve Si-based anodes is to change the structure of silicon.
It showed that the modification of silicon structure into porous could increase retention or anode stability [25].
XRD characterization is used to analyze the structure, size, and crystal phases formed in a material.
Sari, presented at the 2ND INTERNATIONAL CONFERENCE ON CHEMISTRY, CHEMICAL PROCESS AND ENGINEERING (IC3PE), Yogyakarta, Indonesia (2018)
Online since: August 2021
Authors: Valentina N. Zyryanova, Evgeniya V. Lytkina, Arzana P. Ochur-Ool
By itself, formation of hydrates does not yet specify a high value for the strength of artificial stone, but is a prerequisite for this;
- structure formation: the formation of stable structure of artificial material.
The process of structure formation is determined by the change in free energy that is associated with the occurrence of interaction products and new interfaces and the seal forming structure.
These impacts can be quite complex, due to the specific structure of solids.
Pauling, General Chemistry, World, Moscow, 1976
Miryuk, Magnesia composites of various structures, University News.
The process of structure formation is determined by the change in free energy that is associated with the occurrence of interaction products and new interfaces and the seal forming structure.
These impacts can be quite complex, due to the specific structure of solids.
Pauling, General Chemistry, World, Moscow, 1976
Miryuk, Magnesia composites of various structures, University News.
Online since: May 2022
Authors: Fabio Bolzoni, Silvia Beretta, Andrea Brenna, Marco Ormellese, Maria Vittoria Diamanti, Maria Pia Pedeferri
It can be argued that extending the service life of structures can reduce the overall impact of the structure on the environment and the withdrawal of resources from it.
Durable Concrete Structures, bulletin n. 148 (1st ed.) 1982; bulletin n. 182 (2nd ed.) 1989
Ferreira, Implication on RC structure performance of model parameter sensitivity: effect of chloride, J Civ.
Conf. on durability of concrete structures Jun 30-Jul 1 2016 Shenzen, China
Coppola, The influence of steel galvanization on rebar behaviour in concrete, in Cor-rosion of Reinforcement Construction, (Cambridge: The Royal Society of Chemistry) 630–641, 1996
Durable Concrete Structures, bulletin n. 148 (1st ed.) 1982; bulletin n. 182 (2nd ed.) 1989
Ferreira, Implication on RC structure performance of model parameter sensitivity: effect of chloride, J Civ.
Conf. on durability of concrete structures Jun 30-Jul 1 2016 Shenzen, China
Coppola, The influence of steel galvanization on rebar behaviour in concrete, in Cor-rosion of Reinforcement Construction, (Cambridge: The Royal Society of Chemistry) 630–641, 1996