Isoconversional and thermal methods of kinetic analysis of 2,4‐dihydroxybenzophenone copolymer resin

Gurnule, Wasudeo B.; Butoliya, Suraj S.

doi:10.1002/app.34309

Cited by 8 publications

(5 citation statements)

References 21 publications

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“…Since any spherical texture in the composites prepared in this study was not observed, it can be concluded that the -CH 2 -linkage plays a main role in the aniline sphere formation [20]. The extent of crystalline character depends on the acidic nature of the monomers [21].…”

Section: Xrd and Sem Analysismentioning

confidence: 69%

Synthesis and Thermal and Textural Characterization of Aniline Formaldehyde-Organoclay Composites

et al. 2016

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In this study, the synthesis of aniline-formaldehyde resin, and its thermal and structural characterization, as well as the preparation and characterization of the resin-organoclay composites were carried out. For this, first, at 70• C and acidic conditions the aniline formaldehyde prepolymer was prepared and then cured at 120• C under vacuum. The structural and thermal characterization of the resin was made using FTIR and DSC techniques. By using the Cetyltrimethylammonium Bromide modified Montmorillonite (OMMT) and the synthesized resin, the resin-organoclay composites were prepared by melt intercalation method. Characterization of the resin-organoclay composites prepared with the different ratios of organoclay is made with the same techniques. The FTIR and thermal analysis results of the composites indicate that a cross-linked polymeric matrix was formed. The thermal behavior of the composites has also significantly changed compared to pure resin.

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Section: Xrd and Sem Analysismentioning

confidence: 69%

Synthesis and Thermal and Textural Characterization of Aniline Formaldehyde-Organoclay Composites

et al. 2016

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“…At 2.50 (δ) ppm signal is a result of the -CH 2 protons in the copolymer. The singlet at 3.41 (δ) ppm is caused by the proton of the N-CH 2 -N bridge [11][12]. The weak multiple signals that looked in the range of 7.21-8.10 (δ) ppm were all caused by the protons of the aromatic ring.…”

Section: Nmr Spectral Analysismentioning

confidence: 96%

Thermal degradation studies of 2-amino 6-nitrobenzothiazole-oxamide-formaldehyde copolymer and its composites

Gurnule,

Gupta,

Gupta

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Composites are viewed as promising advanced materials because of their superior features, including enhanced flame retardancy, density, relatively large surface areas, strength and thermomechanical/optoelectronic/magnetic capabilities. 2-amino 6-nitrobenzothiazole, oxamide, and formaldehyde has been used for the synthesis of copolymerizing polycondensation technique, and newly synthesized copolymer with activated charcoal was used to synthesize its composite. Several physicochemical techniques, and Ultraviolet-visible, SEM, TGA, and FTIR techniques, have been utilized to illustrate the produced copolymer and its composite. The non-aqueous conductometric titration was used to determine the molecular weight of the 2-amino 6-nitrobenzothiazole-oxamide-formaldehyde copolymer.based on TGA data, thermal stability of the composite is higher than copolymer, possibly because there are more carbonized residues. Based on Ea values determined by Sharp-Wentworth and Freeman-Carroll technique for copolymer and its composite, it is observed that they are in good agreement with each other. It is abundantly obvious from the results of the sequence of reaction that the decomposition reaction roughly follows a first-order kinetics. The composite's higher surface area, porous makeup, and smaller particle size may have contributed to its superior performance. The copolymer and its composite have better heat stability.

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“…The kinetic data processing was performed by applying the Freeman-Carroll method. [42][43] This method allows calculating the activation energy, pre-exponential factor and reaction order from a single TGA curve by Equation (1):…”

Section: Thermogravimetric Analysesmentioning

confidence: 99%

Characterization of Components Isolated From Algerian Apricot Shells (Prunus Armeniaca L.)

Allouch¹,

Popa²,

Popa³

et al. 2019

Cellulose Chem. Technol.

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Shells resulting from food processing and agricultural activities, such as hard shells of apricot, are considered as wastes and are generally used as fuel. However, this residue shows promise as lignocellulosic feedstock for biorefineries, for its conversion to liquid fuel or bio-products. This study is dedicated to the characterization and isolation of lignin, cellulose and hemicelluloses from apricot shells (AS). The chemical composition and thermal stability of AS after chemical treatment with solvents (ethanol-toluene), cellulose, hemicelluloses and lignin were analyzed by standard methods, i.e. Fourier-transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA). Further, almost 50.2 wt% of a water-insoluble extract was obtained after the bleaching process, which showed the removal of lignin, and the final percentages for this extraction were 50.2 ± 0.34%, 26.5 ± 0.83%, 23.7 ± 0.29% and 35 ± 1% for holocellulose, cellulose, hemicelluloses and lignin, respectively. FTIR spectroscopy evidenced the structure of lignin, cellulose and hemicelluloses. Thermal analysis and the kinetic study suggested that cellulose had higher thermal stability than the other components, with the activation energy of 289.62 kJ/mol. Thus, our results indicated the high potential of AS to be used as an environmentally friendly material in a biorefinery, as well as in the modern polymer and chemical industries.

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Isoconversional and thermal methods of kinetic analysis of 2,4‐dihydroxybenzophenone copolymer resin

Cited by 8 publications

References 21 publications

Synthesis and Thermal and Textural Characterization of Aniline Formaldehyde-Organoclay Composites

Synthesis and Thermal and Textural Characterization of Aniline Formaldehyde-Organoclay Composites

Thermal degradation studies of 2-amino 6-nitrobenzothiazole-oxamide-formaldehyde copolymer and its composites

Characterization of Components Isolated From Algerian Apricot Shells (Prunus Armeniaca L.)

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