Abstract The relationships between the polymerization related to structure and composition of different types natural resins were determined. Analyses carried out by Fourier transform infrared spectroscopy (FTIR), differential thermal analysis–thermogravimetry (DTA-TG) hot stage microscopy (HSM). Copal specimens collected from Mai-Ndombe Lake, Democratic Republic Congo, amber pieces that came B...

N1,N1,N2,N2-tetramethyl-N1,N2-bis(sulfo)ethane-1,2-diaminium chloride ([TMBSED][Cl]2) was synthesized as an acidic ionic liquid and characterized using FT-IR, 1H and 13C NMR, mass spectroscopy, TG, DTG and DTA techniques. This ionic liquid was employed as efficient catalyst for the extremely facile and efficient synthesis of dihydropyrrol-2-ones and functionalized tetrahydropyridines. One-pot f...

Abstract In this study four kinds of biochars were prepared from the KOH modified biomass. As carbon precursors there was used sawdust following trees: oak, hornbeam, apple and cherry. The physicochemical properties materials characterized by N 2 adsorption, scanning electron microscopy, thermal analysis (TG, DTG DTA), infrared spectroscopy, Boehm’s titration method. Moreover, pH pzc (the point...

BACKGROUND AND METHODS Several standard powdered black pigments were characterized by means of thermogravimetry TG-DTG and allied techniques. These pigments were used to make standard plaster frescoes at this purpose prepared. The latter ones were subjected to Raman and reflectance analysis. The results obtained, together with TG data, were chemometrically processed and used to identify an anal...

Understanding the mechanisms of thermal transformations model lignin compounds (MLC) over nanoscale catalysts is important for improving technologic processes occurring in pyrolytic conversion lignocellulose biomass into biofuels and value-added chemicals. Herein, we investigate catalytic pyrolysis MLC (pyrocatechol (P), guaiacol (G), ferulic (FA), vanillic acids (VA)) nanoceria using FT-IR spe...

The work investigated the thermal behavior of Borodino coal, brown coal coke and mixed fuel, consisting 80 % 20 during combustion process using thermogravimetric analysis. chemical composition samples is presented. When analyzing TG-DTG curves, characteristics were determined, such as: ignition temperature (Ti) burnout (Te), flammability index, integral parameter. To determine Ti Te, technique ...

PURPOSE Thermal analysis (TGA, DTG and DTA) and differential scanning calorimetry (DSC) have been used to study the thermal behavior of terazosin hydrochloride (TER). METHODS Thermogravimetric analysis (TGA/DTG), differential thermal analysis (DTA) and differential scanning calorimetry (DSC) were used to determine the thermal behavior and purity of the used drug. Thermodynamic parameters such...

This study aimed to evaluate the extract of chitosan obtained from pink shrimp (Parapenaeus longirostris) shell wastes in Balıkesir, Marmara Sea Turkey, and characterize its quality. The physicochemical properties biopolymer such as moisture content, solubility, degree deacetylation (DD), molecular weight (MW), particle size, bulk density, pH, water-binding capacity (WBC), fat-binding (FBC), co...