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Online since: April 2012
Authors: Ming Yong Shu, Hai Ying Yin, Guang Hui Liu
Introduction Bentonite, as a kind of clay mineral mainly consisting of montmorillonite, is widely applied to casting, metallurgy, petroleum, chemistry and environmental protection etc., so it is also known as universal clay.
It can also be observed that with the characteristic peak of the ca-bentonite is around 2212cm-1, and was kept as the sodium structure was not be damaged by H+.
This is mainly because that when the acidity exceeds 10%, the free acid destroys the crystal layer structure of the bentonite, and some ions like Al3+,Mg2+ are dissolved by H+, accordingly causing collapse of the 2:1 structure framework.
When the acid concentration exceeds 10%, the free acid destroys the structure of the montmorillonite crystal layer, causing collapse of the 2: 1 structure, and reducing the specific surface area, as a result of which the decolorization performance of the floridin decreases.
Nevertheless, over long reaction time will result in damage of the octahedral structure in the bentonite, causing declination of the activity and decolorization ratio[9].
Online since: March 2022
Authors: Erwin P. Enriquez, Virgil Christian G. Castillo, Ted Limpoco
However, by adding nitrate ions to a film that already contains nitrogen in its structure the concentration was raised to 13.75%.
PSS/PDDA LbL films contain nitrogen not as nitrates but part of a polymer structure.
The nitrogen in the LbL films was part of the film structure but this nitrogen concentration was still too low to be detected by EDS.
Ferro, “Application of Scanning Electron Microscopy Energy Dispersive X-Ray Spectroscopy,” in Comprehensive Analytical Chemistry, no.
Online since: March 2026
Authors: Wiwat Pichayakorn, Jirapornchai Suksaeree, Chaowalit Monton, Pattwat Maneewattanapinyo
Tailoring Mechanical Properties of Natural Mucilage Films via Plasticizer Incorporation: Toward Sustainable Material Innovation Pattwat Maneewattanapinyo1,a, Chaowalit Monton2,b, Wiwat Pichayakorn3,c, and Jirapornchai Suksaeree1,d* 1Department of Pharmaceutical Chemistry, College of Pharmacy, Rangsit University, Muang, Pathum Thani 12000, Thailand 2Drug and Herbal Product Research and Development Center, College of Pharmacy, Rangsit University, Muang, Pathum Thani 12000, Thailand 3Department of Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat-Yai, Songkhla 90112,Thailand apattwat.m@rsu.ac.th, bchaowalit@rsu.ac.th, cwiwat.p@psu.ac.th, d*jirapornchai.s@rsu.ac.th Keywords: mechanical properties, plant leaf mucilage, film, plasticizer.
Among the plasticizers tested, LPNRL showed the most favorable mechanical profile, providing a flexible yet sufficiently strong film structure.
Previous studies on latex-blended matrices also confirm that rubber particles enhance bulk structure while promoting elastic recovery [10-12].
The blank film, due to its brittle structure, failed under minimal folding cycles.
Online since: March 2007
Authors: Thierry Epicier, Philippe Maugis, Eglantine Courtois, Daniel Acevedo Reyes, Michel Perez
High Resolution Transmission Electron Microscope and Electron Energy Loss Spectroscopy and have been used to characterize the structure and chemical composition of niobium carbonitrides in the ferrite of a Fe-Nb-C-N model alloy at different precipitation stages.
In this paper, we will present quantitative measurements of precipitates chemical composition and structure that experimental results provide.
A detailed description of the quantitative analysis of the chemistry of the precipitates by EELS can be found in [15,16]. 2 nm -b3 nm -a Fig. 1: HRTEM images (5 minutes at 650°C), (a) mono-atomic platelet enriched in Nb; (b) a [110] Na-Cl type NbCN nano-precipitate within a [100] Fe-g thin foil.
Online since: October 2010
Authors: Shuzi Hayase, Kenshiro Uzaki, Shyam S. Pandey, Yuhei Ogomi
Experimental section The cell structure is shown in Figure 1.
The structure of Cell TAN was shown in Figure 1, where a stainless mesh covered with a charge recombination-blocking layer was used.
This thin layer has a gradient structure and effectively blocks charge recombination between the stainless metal surface and iodine in the electrolyte.
Results and discussion Structure of Cell-TAN and Cell-TAN GF Figure 1 shows a Cell-TAN or Cell-TAN GF consisting of the floating electrode.
A: Chemistry 164 (2004), 33
Online since: September 2011
Authors: Ju Ping Zhang, Wei Jiang Zhang, De Quan Wang
The coal chemistry program is signed as the production power of 2,520,000 tons of healthran, 8,000,000 tons of cogasin, 2,000,000 tons of cocking, 5,000,000 tons of refined oil and 800,000 tons of polyvinyl chloride per year.
In addition, the water use structure inside agriculture is not appropriate, and high water consumption crops of irrigated areas make up a large proportion in Ningxia.
The forth is vegetation re-structure, which plays an important role in water saving efforts in the area along the Yellow River.
Under the condition that the other crops do not reduce the water consumption index and because of the crop structure adjustment and economic crops’ increased square, water consumption is reduced by about 0.08 billion m3.
Adjusting crop planting structure can save water by 12.84 million m3.
Online since: January 2022
Authors: Bo Jiang, Shang Hua Feng, Jian Ping Zhang
Montmorillonite is a typical 2∶1 layered silicate structure, that is, one Al-O octahedral layer (O) are sandwiched in the two Si-O tetrahedral layers (T).
According to relevant literature, the adsorption of heavy metals and radionuclides by bentonite usually enters the interlayer structure.
Although most of dye can be decomposed directly at high temperature, the interlayer structure of bentonite may also be destroyed.
The destruction of structure will decline the adsorption efficiency of bentonite.
The crystal structure of the composite was determined by X-ray diffraction (XRD).
Online since: June 2012
Authors: Qin Min Yang, Jian Gang Lu, Yan Wu
In [5], three jet shapes, including Y-shape, Fan-shape and Fan-Out-shape, have been investigated in terms of flow structure.
Nowadays a lot of efforts have been devoted to analyzing the structure of reactors and the characteristics of various reactions with those designs.
Sec. 2 shows the overall structure of the entire nanoparticle manufacturing system by using micromixer device.
By controlling the structure of mixing, the critical speed for the stable reacting can be higher which will lead to more production in mean time.
Loewe, Microreactors: New Technology for Modern Chemistry, Wiley-VCH, Germany, 2000
Online since: June 2014
Authors: Shi Jie Wang, Xiao Ren Lv, Hui Ming Wang
After cyclohexane spread into rubber, the rubber net structure has changed; physical junction fractured; net structure appeared cracks and pores, that makes mechanical performance of NBR felled sharply.
There are many factors can influence the rate of the permanent deformation such as rubber net structure between the molecules; molecular force; displacement between the molecules and so on.
This phenomenon is attributed to the cyclohexane that diffused into the grid structure of NBR ; destroyed the rubber crosslinking structure ; declined the crosslink density of N26.But the macromolecular motion constrained problem of the N40 has been solved.
The grid structure of NBR has the same variation tendency, So in the Figure 4 (b)there has three curves of the dried NBR.
Principles of Polymer Chemistry[M].Ithaca, N.Y.: Cornell Univ.
Online since: February 2013
Authors: Xiao Ke Li, Qing Shan Yang, Xiao Yong Huang, Bin Jiang, Fu Sheng Pan
In addition to the Mg peaks, the reflection of cubic structure Al2Ca phase can also be indexed in the both alloys.
The empirical parameters take different values ​​by Miedema model depending on the count subject to composition of the material, the electronic structure of the element and electric negative.
Thus, Al2Ca structure has a high stability and the formation will not be remelted.
Wu, Structure stability and mechanical properties of Mg–Al-based alloy modified with Y-rich and Ce-rich misch metals, Journal of Alloys and Compounds, 509(2011), L187-L193
Pan, Grain refinement of Ca addition in a twin-roll-cast Mg–3Al–1Zn alloy, Materials Chemistry and Physics, 133(2012), 611-616