An investigation into the structure and morphology of polyamide 6/polyaniline hybrid fibers

2018 ◽  
Vol 38 (1) ◽  
pp. 19-24
Author(s):  
Kamran Zarrini ◽  
Mostafa Youssefi
Keyword(s):  
Phase Diagram ◽  
Ternary Phase ◽  
Ternary Phase Diagram ◽  
Polyamide 6 ◽  
Wet Spinning ◽  
X Ray Diffraction ◽  
Hybrid Fibers ◽  
X Ray ◽  
Structure And Morphology ◽  
Crystalline Forms

Abstract A wet spinning dope composition for the production of hybrid fibers was selected based on the analysis of a ternary phase diagram of polyamide 6 (PA6)/formic acid/water. Polyaniline was later added to this dope with different weight percentages to produce hybrid fibers. The results showed that polyaniline was dispersed uniformly in the PA6 matrix and the spinning dope composition had a great impact on the morphology of the hybrid fibers produced with different quantities of polyaniline. The electrical conductivity of the hybrid fibers was increased with the increase in polyaniline content of the fibers and reached 7.94×10−3 S·cm−1 for the sample that contained 30% polyaniline. The crystalline structure of PA6 in all hybrid fibers was revealed to be only of α form. No other crystalline forms, for example β form, was observed in PA6 due to the presence of polyaniline in the system as revealed from x-ray diffraction results.

Different CaO Content Influence on Fusibility of Coal Ash

2011 ◽  
Vol 396-398 ◽  
pp. 1278-1282
Author(s):  
Yong Jing Liu ◽  
Yan Hong Guo ◽  
Qiao Wang
Keyword(s):  
Phase Diagram ◽  
Chemical Composition ◽  
Ternary Phase ◽  
Ternary Phase Diagram ◽  
Coal Ash ◽  
X Ray Diffraction ◽  
X Ray

Selecting the Zichang coal as the sample coal, the chemical composition of the ash is analyzed with X-ray diffraction. The fusibility of coal ash temperature is measured for the ash with the different CaO content. The results shows that fusibility of coal ash drops with the increasing CaO content until it reaches 3.0%; then it increases with the increasing CaO content. We can explain this behavior by SiO2–Al2O3–CaO ternary phase diagram. The temperature of fusibility is lower when the additive amount reaches 3.0%~3.5% of coal.

scholarly journals New insights on the crystalline forms in binary systems of n-alkanes: Characterization of the solid ordered phases in the phase diagram tricosane + pentacosane

1999 ◽  
Vol 14 (6) ◽  
pp. 2644-2654 ◽  
Author(s):  
F. Rajabalee ◽  
V. Métivaud ◽  
D. Mondieig ◽  
Y. Haget ◽  
M. A. Cuevas-Diarte
Keyword(s):  
Phase Diagram ◽  
Binary Systems ◽  
The Other ◽  
Structural Behavior ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ordered Phases ◽  
Crystalline Forms ◽  
Mixed Samples

X-ray diffraction analyses of the pure components n-tricosane and n-pentacosane and of their binary mixed samples have enabled us to characterize the crystalline phases observed at “low temperature.” Contrary to what was announced in literature on the structural behavior of mixed samples in odd-odd binary systems with Δn = 2, the three domains are not all orthorhombic. This work has enabled us to show that two of the domains are, in fact, monoclinic (Aa, Z = 4), and the other one is orthorhombic (Pca21, Z = 4). The conclusions drawn in this work can easily be transposed to other binary systems of n-alkanes.

Supersaturation Behavior of Al Solid Solutions and its Effect on Tensile Property in Al-7Si-xMg Alloys during Solution Heat Treatment (x: 0.4 and 0.8 Mass%)

2016 ◽  
Vol 877 ◽  
pp. 73-77
Author(s):  
Seong Ho Ha ◽  
Su Yeon Lee ◽  
Young Ok Yoon ◽  
Shae K. Kim
Keyword(s):  
Heat Treatment ◽  
Phase Diagram ◽  
Tensile Property ◽  
Solid Solutions ◽  
Electron Probe ◽  
Solution Heat Treatment ◽  
Ternary Phase ◽  
Ternary Phase Diagram ◽  
X Ray ◽  
Electron Probe Micro Analyzer

Supersaturation behavior of Al solid solutions and its effect on tensile property in Al-7Si-0.4Mg and Al-7Si-0.8Mg alloys during solution heat treatment were investigated in this study. As a result of Mg solubility measurement for Al solid solitions after solution heat treatment for 6 hrs by electron probe micro analyzer (EPMA)-wavelength-dispersive X-ray spectroscopy (WDS), Al-7Si-0.8Mg alloy had the higher Mg solubility, about 0.55 mass%, corresponding to that of Al-Si-Mg ternary phase diagram. From the tensile test, Al-7Si-0.8Mg alloy showed the improved strength and similar elongation to that of Al-7Si-0.4Mg alloy.

scholarly journals Liquid Regions of Lanthanum-Bearing Aluminosilicates

Materials ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 450
Author(s):  
Yandong Li ◽  
Tongsheng Zhang ◽  
Yefeng Feng ◽  
Chengjun Liu ◽  
Maofa Jiang
Keyword(s):  
Phase Diagram ◽  
Solid Oxide Fuel Cells ◽  
Phase Diagrams ◽  
Binary Systems ◽  
Ternary Phase ◽  
Ternary Phase Diagram ◽  
Energy Dispersive Spectrometer ◽  
Liquid Region ◽  
X Ray Diffraction ◽  
Calculated Liquid

The Al2O3-SiO2, La2O3-Al2O3, and La2O3-SiO2 binary phase diagrams were estimated by Redlich–Kister expression. La4.67Si3O13 (=La4.67(SiO4)3O) was introduced to improve the existing phase diagrams. The Al2O3-SiO2-La2O3 ternary phase diagram extrapolated by Kohler method was optimized. Then, the liquidus of Al2O3-SiO2-La2O3 system at 1600 °C was compared with Al2O3-SiO2-RE2O3 (RE = Rare Earth Elements) systems and experimental results in other literature. The high temperature experiments were conducted in the tube furnace at 1500 °C. Then the field emission scanning electron microscope (FE-SEM), energy dispersive spectrometer (EDS), and X-ray diffraction (XRD) were employed to verify the calculated liquid region and precipitates phase at 1500 °C. Moreover, the liquidus of binary systems were compared with FactSage results and experiments. The optimized ternary phase diagram shows the relatively reliable region of liquid phase, and it is significant to the seal glass of solid oxide fuel cells and other fields being related to RE containing silicates.

Crystal chemistry of the system Bi2O3–CdO–GeO2

1996 ◽  
Vol 11 (2) ◽  
pp. 80-84
Author(s):  
S. Wies ◽  
W. Eysel
Keyword(s):  
Phase Diagram ◽  
Solid Solution ◽  
Crystal Chemistry ◽  
Ternary Phase ◽  
Ternary Phase Diagram ◽  
Structure Type ◽  
Ternary Oxide ◽  
Isothermal Sections ◽  
X Ray ◽  
New Phase

The ternary phase diagram of the system Bi2O3-CdO-GeO2 was investigated in several isothermal sections using predominantly X-ray powder diffraction. The following phases are described with respect to their crystal chemistry, phase relations and powder patterns: Bi2−2xCd2x(O3−x⍽9+x) (solid solution with anti-α-AgI structure), CdGeO3 (complicated polymorphism), Bi12GeO20 (stoichiometric sillenite), Cd-sillenite (solid solution), Bi1.8Cd0.2GeO4.9 (metastable, new phase, new structure type with GeO5 polyhedra), Bi2CdGeO6 (new ternary oxide, new structure type).

scholarly journals The study of rod-shaped TiO2 composite material in the protection of stone cultural relics

2020 ◽  
Vol 9 (1) ◽  
pp. 359-365
Author(s):  
Hui Shu ◽  
Yujian Song ◽  
Qiang Liu ◽  
Maobin Luo
Keyword(s):  
Photocatalytic Performance ◽  
Acid Resistance ◽  
Uv Resistance ◽  
X Ray Diffraction ◽  
X Ray ◽  
Structure And Morphology ◽  
Excellent Photocatalytic Activity ◽  
Stone Culture ◽  
Weather Resistance ◽  
Cultural Relics

AbstractTiO2 has many advantages, such as UV resistance, thermal stability, and antibacterial; the attention toward TiO2 composite materials (TCMs) is rapidly increasing in the protection of stone culture relics. An innovative rod-shaped TCM was synthesized in this study. The structure and morphology of TCM were studied by X-ray diffraction and scanning electron microscopy. The acid resistance, weather resistance, hydrophilicity, and photocatalytic performance of TCM had been investigated. The experimental results indicated that TCM has good protection effects. The stone sample treated with TCM has stronger acid resistance and weather resistance, better hydrophilicity, and more excellent photocatalytic activity compared with the untreated stone. More importantly, the stone treated with TCM has better acid resistance and weather resistance than that treated with normal shaped TiO2 materials of the previous study. This work describes an effective way to protect stone cultural relics.

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