Simple Thermal‐Gravimetric Apparatus

1967 ◽  
Vol 38 (11) ◽  
pp. 1675-1676 ◽  
Author(s):  
J. J. Byerley
Keyword(s):  
Thermal Gravimetric ◽  
Gravimetric Apparatus

Oxidation Behavior of Steel and Pure Copper at 500-700°C

2013 ◽  
Vol 421 ◽  
pp. 401-405
Author(s):  
Sang An Ha ◽  
Jei Pil Wang
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Oxidation Behavior ◽  
Pure Copper ◽  
Thermal Gravimetric ◽  
X Ray Diffraction ◽  
X Ray ◽  
Composition And Structure ◽  
Gravimetric Apparatus ◽  
Scanning Electron

The oxidation behavior of steel and pure copper has been investigated in the temperature range of 500-700°C at various oxygen pressures. The rate of oxidation was measured using thermal gravimetric apparatus (TGA). The morphology, composition and structure of the oxide scale were determined by scanning electron microscopy (SEM) and X-ray diffraction (XRD).

High‐Temperature Thermal Gravimetric Apparatus

1973 ◽  
Vol 44 (9) ◽  
pp. 1428-1429 ◽  
Author(s):  
Richard A. Gardner ◽  
William R. Swiss
Keyword(s):  
High Temperature ◽  
Thermal Gravimetric ◽  
Gravimetric Apparatus

Thermal gravimetric analysis of in-situ crosslinked nanocellulose whiskers • poly(methyl vinyl ether-co-maleic acid) • polyethylene glycol

TAPPI Journal ◽  
2011 ◽  
Vol 10 (4) ◽  
pp. 29-33
Author(s):  
LEE A. GOETZ ◽  
AJI P. MATHEW ◽  
KRISTIINA OKSMAN ◽  
ARTHUR J. RAGAUSKAS
Keyword(s):  
Thermal Stability ◽  
Polyethylene Glycol ◽  
Vinyl Ether ◽  
Thermal Gravimetric Analysis ◽  
Maleic Acid ◽  
Gravimetric Analysis ◽  
Thermal Gravimetric ◽  
Methyl Vinyl ◽  
Methyl Vinyl Ether

The thermal stability and decomposition of in-situ crosslinked nanocellulose whiskers – poly(methyl vinyl ether-co-maleic acid) – polyethylene glycol formulations (PMVEMA-PEG), (25%, 50%, and 75% whiskers) – were investigated using thermal gravimetric analysis (TGA) methods. The thermal degradation behavior of the films varied according to the percent cellulose whiskers in each formulation. The presence of cellulose whiskers increased the thermal stability of the PMVEMA-PEG matrix.

scholarly journals Fabrication and characterization of hexadecyl acrylate cross-linked phase change microspheres

e-Polymers ◽  
2020 ◽  
Vol 20 (1) ◽  
pp. 69-75
Author(s):  
Haoran Yun ◽  
Xingxiang Zhang
Keyword(s):  
Phase Change ◽  
Smooth Surface ◽  
Bone Conduction ◽  
Cross Linking ◽  
Gravimetric Analysis ◽  
Orthopedic Implant ◽  
Thermal Gravimetric ◽  
Fabrication And Characterization ◽  
Fast Release

AbstractMicrospheres with phase change properties were fabricated by polymerization of hexadecyl acrylate (HA) and different cross-linking agents. The samples were characterized by scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR), thermal gravimetric analysis (TGA). The results show that, the samples that added cross-linking agents have a smooth surface and the latent heat of them is different. The experiments show that all of the cross-linked copolymer shells can be made into temperature controlled release microspheres. These materials can be potentially applied in the field of thermal energy storage. β-tricalcium phosphate was encapsulated in microspheres to obtain one with a fast release effect. It will effectively promote bone conduction when these microspheres were implanted into a bone defect. This microsphere can be used for orthopedic implant or coating of instrument in the future.

Influence of additives on the properties of spherical nickel particles prepared by ultrasonic spray pyrolysis

1999 ◽  
Vol 14 (7) ◽  
pp. 3059-3065 ◽  
Author(s):  
S. Stopić ◽  
J. Nedeljković ◽  
Z. Rakočević ◽  
D. Uskoković
Keyword(s):  
Aqueous Solution ◽  
Spray Pyrolysis ◽  
Ultrasonic Spray Pyrolysis ◽  
Scanning Tunneling ◽  
Thermal Gravimetric ◽  
Tunneling Microscopy ◽  
Ultrasonic Spray ◽  
Nickel Particles ◽  
Initial Reduction ◽  
Mean Diameter

Ideal spherical nonagglomerated Ni particles (mean diameter 0.62–1.12 μm) were prepared by ultrasonic spray pyrolysis of NiCl2 aqueous solution in the presence of 0.1 mass% of Pd, Cu, or Ni in an H2–N2 atmosphere at 900 °C. Incomplete reduction of the NiCl2 aqueous solution in the absence of additives was observed under the same conditions. Differential thermal and thermal-gravimetric analyses revealed a decrease in initial reduction temperature of NiCl2 from 375 to 275 °C by the addition of Pd, Cu, or Ni. The morphology of Ni particles was analyzed using scanning tunneling microscopy. The surface roughness of Ni particles was found to be controllable by addition of appropriate additives.

Synthesis, Characterization and Application of Multi-Generations Hyperbranched Polyurethane Based on Isophorone Diisocyanate

2012 ◽  
Vol 554-556 ◽  
pp. 126-129 ◽  
Author(s):  
Shun Yin ◽  
Ning Sun ◽  
Chun Yun Feng ◽  
Zhi Mou Wu ◽  
Zhao Hua Xu ◽  
...  
Keyword(s):  
Differential Scanning Calorimetry ◽  
Raw Materials ◽  
Degradation Mechanism ◽  
Resonance Spectroscopy ◽  
Gravimetric Analysis ◽  
Thermal Gravimetric ◽  
Isophorone Diisocyanate ◽  
Scanning Calorimetry ◽  
Degradation Temperature ◽  
Hyperbranched Polyurethane

A series of different generation hyperbranched polyurethane(HBPU) was synthesized based on the raw materials of isophorone diisocyanate(IPDI) and diethanolamine(DEOA). Their structure, thermal degradation mechanism and glass transition temperature(Tg) were characterized by fourier transform infrared spectroscopy(FTIR), nuclear magnetic resonance spectroscopy(NMR), thermal gravimetric analysis(TGA) and differential scanning calorimetry(DSC). The results showed that: the yield of each generation HBPU was up to 90%, different generation HBPU had almost the same initial degradation temperature(about at 200°C) and they all had two decomposition platforms; with the increase of generation, Tg increased from 107.2°C to 132.1°C. The gloss and hardness of the HBPU coatings were significantly improved.

scholarly journals Polyurethane green composites for the treatment of boron present in the oil produced water

2020 ◽  
Author(s):  
Murtuza Ali Syed ◽  
Mohammed Al Sawafi ◽  
Feroz Shaik
Keyword(s):  
Produced Water ◽  
Chemical Properties ◽  
Gravimetric Analysis ◽  
Physical And Chemical Properties ◽  
Thermal Gravimetric ◽  
Boron Removal ◽  
Weight Losses ◽  
Chemical Solutions ◽  
Physical And Chemical ◽  
And Chemical Properties

Abstract Polyurethane (PU) based algae biocomposite is synthesized and tested for boron removal from oil produced water. The percentage of algae is varied in the biocomposite and its physical and chemical properties are evaluated. The surface morphology, crystalline structure, thermal stability is characterized using scanning electron microscope, fourier transform infrared spectroscopy and thermal gravimetric analysis. The density of synthesized PU/algae composites is in the range of 1.12 and 1.20 g/ml based on content of filler in the PU matrix. Weight losses of the tested specimens in various chemical solutions are less than 10%. The boron removal efficiency is in the range of 84–85%, depending upon the algae filler at pH 7.19.

scholarly journals Thermal Effect of Ceramic Nanofiller Aluminium Nitride on Polyethylene Properties

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Omer Bin Sohail ◽  
P. A. Sreekumar ◽  
S. K. De ◽  
Masihullah Jabarullah Khan ◽  
Abbas Hakeem ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Ethylene Polymerization ◽  
Filler Loading ◽  
Aluminium Nitride ◽  
Thermal Gravimetric ◽  
X Ray Diffraction ◽  
Sem Images ◽  
Nano Composite ◽  
X Ray ◽  
Thermal Gravimetric Analyzer

Ethylene polymerization was done to form polyethylene nano-composite with nanoaluminum nitride using zirconocene catalysts. Results show that the catalytic activity is maximum at a filler loading of 15 mg nanoaluminum nitride. Differential scanning calorimeter (DSC) and X-ray diffraction (XRD) results show that percentage crystallinity was also marginally higher at this amount of filler. Thermal behavior of polyethylene nanocomposites (0, 15, 30, and 45) mg was studied by DSC and thermal gravimetric analyzer (TGA). Morphology of the component with 15 mg aluminium nitride is more fibrous as compared to 0 mg aluminium nitride and higher filler loading as shown by SEM images. In order to understand combustibility behavior, tests were performed on microcalorimeter. Its results showed decrease in combustibility in polyethylene nanocomposites as the filler loading increases.

Synthesis, Structure, and Characterization of La1−xBax (0 ≤ x ≤ 1)

1992 ◽  
Vol 271 ◽  
Author(s):  
Joseph E. Sunstrom ◽  
Susan M. Kauzlarich
Keyword(s):  
Magnetic Susceptibility ◽  
Powder Diffraction ◽  
Single Phase ◽  
Gravimetric Analysis ◽  
Thermal Gravimetric ◽  
Temperature Dependent ◽  
X Ray ◽  
Early Transition Metal ◽  
Arc Melting

ABSTRACTThe compounds La1−xBaxTiO3 (0 ≤ × ≤ 1) have been prepared by arc melting stoichiometric amounts of LaTiO3 and BaTiO3. Single phase samples can be made for the entire stoichiometry range. The polycrystalline samples have been characterized by thermal gravimetric analysis, X-ray powder diffraction, and temperature dependent magnetic susceptibility. This series of compounds has been studied as a possible candidate for an early transition metal superconductor.

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