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Time-temperature dependences of ignition and combustion processes were obtained; basic stages of CWF combustion were established and investigated; combustion completeness was defined and ash residue structure and properties were investigated during the experimental research.
The following quantitative parameters have been chosen for analysis: · duration of different stages of CWF drop combustion; · the temperature of CWF drop combustion; · the degree of fuel combustion completeness c (ratio of the initial content of combustible mass in the fuel to the content of combustible mass in the fuel during the combustion process) The structure of the ash residue and the type of time-temperature characteristics of the process were subjected to qualitative analysis.
Thermocouples placements scheme during the experimental research: 1 – CWF drop support thermocouple (TC1); 2 – thermocouple for measurement of the temperature around the CWF drop at the distance ≈ 2 mm from the drop surface (TC2); 3 – Thermocouple for measurement of the temperature around the CWF drop at the distance ≈ 5 mm from the drop surface (TC3); 4 – the CWF drop Characteristics of Coal and CWF CWF for experimental research was made up in A.V.Dumansky Institute of Colloid and Water Chemistry in the Department of Physical and Chemical Mechanics of Disperse Systems (Kiev, Ukraine).
The time of combustion is determined by its structure and the properties of the ash coat covering its surface.
Time-temperature characteristics and combustion stages, as well as combustion completeness of the fuel combustible mass and the structure of ash coating, have been determined.

The intermetallic phases confirmed their integration into the metal matrix by providing an enhancing adhesion and solid crystalline structure. 1 Introduction The continuous demand of aluminium alloy with light weight properties, sound reliability, and improved functional service life have been extensively discuss lately [1,2].
The SEM images of 75Al-25SSP in Fig. 8 display a different surface structure, having a solid morphology compared to a wavy-like microstructure in Fig. 6.
The presence of grain boundaries is evident within the structure, with larger micro-voids in the aluminum matrix.
Furthermore, crystalline structures in diverse phases, such as Mg (SiO2), Al(MnO), and Mg(CaCO3), contribute to increased surface conditioning, adhesion, and corrosion resistance [25]. 4 Conclusion The addition of snail shell particles to the Al matrix developed a composite which had improved mechanical, electrical, and corrosion-resistant characteristics.
Akinlabi, Mechanical properties, tribology and electrochemical studies of Al/fly ash/eggshell aluminium matrix composite, Biointerface Research in Applied Chemistry 12 (2022) 4900–4919

Hence it may be concluded that a polymer with similar molecular structure but with different molecular weight would behave differently at similar deformation conditions.
Manias, Structure and properties of poly (vinyl alcohol)/Na+ montmorillonite nanocomposites, Chem Mater., 12 (2000) 2943-2949
Usuki, A house of cards structure in polypropylene/clay nanocomposites under elongational flow, Nano Lett., 1 (2001) 295-298
Kotsilkova, Rheology-structure relationship of polymer/layered silicate hybrids, Mech.
Guillet, Molecular structure and gross melt fracture triggering, J.

In addition, the XRD technique can also show the crystal structure in carbon materials.
The reflection plane 002 correlates with the hexagonal structure and 001/101 is the graphite structure of biomass-based carbon [26,27].
This expansion could lead to the erosion of the carbon wall, thereby reducing the surface area and pore structure that has formed before [25,37].
A higher temperature increase could also collapse existing pore structures so that they accumulate and cover the previous surface area.
Ismadji, Activated carbon from jackfruit peel waste by H3PO4 chemical activation: Pore structure and surface chemistry characterization, Chem.

A tree collisions were formed due to the collision between recoiled atoms (receive energies high enough to leave their sites in the molecular structure) and other carbon/hydrogen atoms [24].
The free electron formed during the ionization can leave the structure which leads to a positive charge on the polyethylene film.
The cluster size in the pristine polymer corresponds to the grain structure of the polymer due to the complexity of its monomeric units.
Radiation Chemistry of Polymeric System.
J., Robertson, E.P.O’Reilly, Electronic and atomic structure of amorphous carbon.

Chemical structures of PC type superplasticizers currently applied by the concrete industry [37].
Several authors have studied the chemical structure of polyacrylates.
Romer, Influence of solution chemistry on the hydration of polished clinker surfaces — a study of different types of polycarboxylic acid-based admixtures, Cem.
Bernkop-Schnürch, Mucoadhesive properties of polyacrylates: Structure – Function relationship, Int.
Brower, Influence of dispersant structure and mixing speed on concrete slump retention, Cem.

Results and Discussion Structure, Composition, and Morphology.
Crystalline structure and particle size of Fe3O4 NPs, g-C3N4 nanosheets, ZnO, and ZnO/g-C3N4/Fe3O4 (ZGF) nanocomposite were determined by the XRD pattern, which is presented in Fig. 1(a).
Therefore, the main structure of ZGF is the same as ZnO which is significantly unchanged by adding Fe3O4 NPs and g-C3N4 nanosheets because Fe3O4 NPs is a small quantity and can be interstitial main ZnO structure.
The strong C-N group stretching of g-C3N4 was observed at 1237 cm-1, which attributed the 3-fold N-bridge linking the tri-s-triazine or s-triazine structure in single g-C3N4 nanosheets.
Nasrabadi: Arabian Journal of Chemistry (2014), http://dx.doi.org/10.1016/j.arabjc.2014.05.030 [30] J.Cao, C.

Ag2O more stable than other phases and possesses a simple cubic structure.
Chen et al, Fractal structure in the silver oxide thin film, Thin Solid Films. 2 (1998) 322–326
Lad, Structure, conductivity, and optical absorption of Ag2−𝑥O films, Thin Solid Films. 515 (2007) 8684–8688
Shinagawa et al., Direct electrodeposition of 1.46 eV bandgap silver(I) oxide semiconductor films by electrogenerated acid, Chemistry of Materials 20(4) (2008) 1254–1256
Salkind, The Structure of Silver Oxide Determined by Means of Neutron Diffraction , Journal of the Electrochemical Society 9 (1961) 108

This indicates a stable structure between the including polymer chains and the particles in the particular range of shear rates.
This test can be used to find the limit of the linear viscoelastic region (LVE region), which determines the range of shear strain, within which a stable structure occurs.
Moreover Fig. 3b shows G” > G’ for the entire strain region, which displays a fluid structure for both pastes.
The continuous decrease of the curves refers to a gradual breakdown of the paste structure including disentanglement and separation of particles from each other and from polymer chains.
This could indicate a recovery of the structure, which can be related to long chain molecules, as already seen in Fig. 3a.

Results and Discussion Pyrrole-based silane Morphology and Structure.
In the case of HimSi, hydrolized groups are not revealed whereas linear and tridimensional crosslinking prevail (T 2 and T 3 structures, respectively), making this solution less stable over time.
This electron-deficient structure may be due either to a covalently bonded hydroxyl group or a delocalized positive charge associated with the charge carrier [17].
The presence of charged species in AniSi-R solution would originate a more porous structure due to counterions needed for charge compensation, thus limiting the barrier properties of the coating.
Thus, a hybrid structure with barrier/active actions, as well as improved morphology and adhesion, can be obtained following a simplified procedure.