Influence of different flux-materials on phase structure, morphology, photoluminescence, thermal stability, and cathodoluminescence in Ba2La0.9Eu0.1SbO6 phosphors

2021 ◽  
pp. 163281
Author(s):  
Yongbin Hua ◽  
Jae Su Yu
Keyword(s):  
Thermal Stability ◽  
Phase Structure ◽  
Structure Morphology

scholarly journals SINTESIS DAN KARAKTERISASI NANOFIBER KOMPOSIT Zn-PVDF KOPOLIMER

2014 ◽  
Vol 16 (1) ◽  
pp. 49-52
Author(s):  
Yelfira Sari ◽  
Muhamad Nasir ◽  
Chandra Risdian ◽  
Syukri Syukri
Keyword(s):  
Crystal Structure ◽  
Phase Structure ◽  
Research Study ◽  
Fiber Diameter ◽  
Average Diameter ◽  
Nanofiber Composite ◽  
Β Phase ◽  
Α Phase ◽  
Structure Morphology ◽  
Electrospinning Method

Sintesis nanofiber komposit Zn-PVDF kopolimer dengan metoda elektrospinning telah berhasil dilakukan. Proses pembuatan nanofiber komposit serta  morfologi yang terbentuk dipengaruhi oleh penambahan Zn-asetat dengan perubahan diameter rata-rata serat dari 357,13 nm menjadi 777,24 nm. Analisis FTIR menunjukkan bahwa struktur kristal nanofiber komposit Zn-PVDF kopolimer didominasi oleh strukturβ-phase, dengan bilangan gelombang 1190,08 cm-1 dan 487,99 cm-1 untuk struktur α-phase dan 1404,18 cm-1; 1280,73 cm-1; 1074,35 cm-1; 881,47 cm-1; dan 840,96 cm-1 untuk struktur β-phase.Kata kunci :nanofiber komposit, Zn-PVDF kopolimer komposit, elektrospinning,kristal struktur, morfologi, diameter fiber The fabrication of Zn-PVDF copolymer nanofiber composite has been investigated in this research study by using electrospinning method. Fabrication and morphology of nanofiber composite is influenced by the addition of Zn-acetate. The average diameter of nanofiber composites increase with an addition of Zn-acetate, from 357,13 to 777,24nm. FTIRanalysisshowedthat thecrystalstructure ofPVDFnanofiberis dominatedby β-phase , thewave number 1190,08 cm-1 and 487,99 cm-1 for α-phase structure and 1404,18cm-1; 1280,73cm-1; 1074,35cm-1; 881,47cm-1and840,96cm-1 for β-phase structure respectively.Key words : nanofiber composite, Zn-PVDF copolymer composite, electrospinning, crystal structure,  morphology, fiber diameter

Influence of Acidic Impurities on Rheological Properties of Boron/Agglomerated Boron and HTPB Slurry

2013 ◽  
Vol 815 ◽  
pp. 898-904
Author(s):  
Xiu Li Hu ◽  
Wei Liang Zhou ◽  
Le Qin Xiao ◽  
Xiao Xia Jian
Keyword(s):  
Weight Gain ◽  
Rheological Property ◽  
Rheological Properties ◽  
Phase Structure ◽  
Oxidation Degree ◽  
Strong Function ◽  
Structure Morphology

The rheological properties of HTPB mixed with boron (B) or agglomerated boron (TB) were investigated to explore the effect of the impurities of boron on the processing of propellant. The phase structure, morphology, and acidity of each sample were characterized by XRD, SEM and pH, respectively. The results show that rheological property of B/HTPB can be significantly improved by agglomerating boron with binder. Time has little effect on the viscosity of TB/HTPB while that of B/HTPB is a strong function of time. The viscosity of TB/HTPB decreases when the temperature increases from 303K to 343K, while that of B/HTPB decreases from 303K to 323K and then increases sharply after 323K. After agglomerating with binder, theTonsetof boron reduces from 1056K to 954K andTpdrops from 1076K to 998K. Compared with B2, the weight gain and oxidation degree of TB2 increases by 27% and 8.5%, respectively.

Structure, morphology and thermal stability of synthetic fluorine mica and its organic derivatives

2011 ◽  
Vol 54 (3-4) ◽  
pp. 226-234 ◽  
Author(s):  
D.H.S. Souza ◽  
K. Dahmouche ◽  
C.T. Andrade ◽  
M.L. Dias
Keyword(s):  
Thermal Stability ◽  
Structure Morphology ◽  
Thermal Stability Of

Characterization of Core-Shell Structure Palygorskite Modified by Nano-CaCO3 (PnC) Composite Particles

2013 ◽  
Vol 750-752 ◽  
pp. 348-351
Author(s):  
Di Fang Zhao ◽  
Ming Hua Li ◽  
Jin Song Xie
Keyword(s):  
Thermal Stability ◽  
Shell Structure ◽  
Composite Particles ◽  
Core Shell ◽  
X Ray Diffraction ◽  
Stability Properties ◽  
Structure Morphology ◽  
Palygorskite Clay ◽  
Core Shell Structure

In this work, Core-shell structure palygorskite/nanoCaCO3(PnC) composite particles have been synthesized chemically, employing solution precipitation methods. Crystal structure, morphology and thermal stability properties are investigated by means of X-ray diffraction (XRD), transmission electronic microscopy (TEM) and Thermogravimetric (TG) analysis. The results showed that the PnC particles were almost monodispersed microsphere aspect with the size was about 1-3 μm diameter. The nanocomposite particles exhibit the marked thermal stability properties than the palygorskite clay mineral.

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