Results 301 to 310 of about 63,629 (381)

Pectin Edible Films Filled with Ilex paraguariensis Concentrate Extract and Its Characterization. [PDF]

open access: yesPolymers (Basel)
Amadeu CAA   +8 more
europepmc   +1 more source

On the evaluation of crude oil oxidation during thermogravimetry by generalised regression neural network and gene expression programming: application to thermal enhanced oil recovery

Combustion theory and modelling, 2021
Enhancing oil recovery using in-situ combustion (ISC) is an attractive alternative, especially for heavy crudes. During ISC, part of the hydrocarbon is pyrolysed/oxidised, which generates heat and deposits fuel in the combustion front.
Mohammad-Reza Mohammadi   +5 more
semanticscholar   +1 more source

Quantitative Analysis of Poly(ethylene terephthalate) Microplastics in Soil via Thermogravimetry-Mass Spectrometry.

Analytical Chemistry, 2018
The use of plastic materials in daily life, industry, and agriculture can cause soil pollution with plastic fragments down to the micrometer scale, i.e., microplastics. Quantitative assessment of microplastics in soil has been limited so far.
J. David   +3 more
semanticscholar   +1 more source

The kinetics of thermogravimetry

European Polymer Journal, 1970
Abstract Homogeneous degradation reactions are discussed with reference to thermogravimetric equations. The dimensional inadequacy of most of the previously-used equations is pointed out and rectified. The modified weight integral of the integrated rate equation is calculated for various reaction orders.
J. R. Maccallum, J. Tanner
openaire   +2 more sources

Kinetics of thermal degradation of char-forming plastics from thermogravimetry. Application to a phenolic plastic

, 2007
A technique was devised for obtaining rate laws and kinetic parameters which describe the thermal degradation of plastics from TGA data. The method is based on the inter-comparison of experiments which were performed at different linear rates of heating.
H. Friedman
semanticscholar   +1 more source

Practical Thermogravimetry

Journal of Thermal Analysis and Calorimetry, 2000
The well-known divergence between the present ‘state of the art’ of thermogravimetry and industrial requirements is discussed. Sources of errors are analyzed and the optimization of measuring conditions is discussed regarding the problems associated with static and dynamic (flow) atmospheres, and interactions between materials and gases or vapors ...
J. Czarnecki, J. Šesták
openaire   +2 more sources

Oxidation Behavior and Kinetics of Light, Medium, and Heavy Crude Oils Characterized by Thermogravimetry Coupled with Fourier Transform Infrared Spectroscopy

, 2018
The oxidation behavior of three crude oils was characterized by thermogravimetry coupled with Fourier transform infrared spectroscopy (TG–FTIR) to investigate the oxidation mechanism of crude oils.
C. Yuan, D. Emelianov, M. Varfolomeev
semanticscholar   +1 more source

“Quasi-isothermal” thermogravimetry

Analytica Chimica Acta, 1971
A new method has been worked out which allows the implementation of a special heating program according to which the temperature of the sample is rapidly increased so long as no changes occur in it, while it ensures nearly isothermal conditions when reactions connected with weight change are taking place.
F. Paulik, J. Paulik
openaire   +2 more sources

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