Thermal oxidative decomposition estimation combining TGA and DSC as optimization targets for PMMA

Alonso, Alain; Urrutia, Mariano Lázaro; Urrutia, David Lázaro; Alvear, Daniel

doi:10.1088/1742-6596/1107/3/032011

Cited by 7 publications

(4 citation statements)

References 15 publications

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“…Thermochemical processing of algae involves complicated physicochemical processes. It is important to gain understanding of the solid-state decomposition kinetics of the feedstock to provide insight into the mechanism of these heterogeneous reactions, which is normally investigated by performing thermogravimetric analysis (TGA) [5]. TGA is one of the most prevailing practices for preliminary estimation of the pyrolysis behaviour of biomass feedstock, which is chemically complex as it involves simultaneous chemical reaction processes.…”

Section: Introductionmentioning

confidence: 99%

Characterization and Analysis of Malaysian Macroalgae Biomass as Potential Feedstock for Bio-Oil Production

et al. 2019

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The potential of Caulerpa lentillifera, Gracilaria coronopifolia and Chaetomorpha linum, as biomass feedstock was investigated in this study. It was concluded that seaweed is more suitable for bio-based products synthesis, i.e., bioplastic and bio-lubricants, instead of biofuels due to its relatively low calorific value (~12 MJ/kg). Since seaweed has high moisture content (~80%), hydrothermal liquefaction is recommended, and its efficiency can be further enhanced through microwave technology. Besides, it is found that the thermal degradation of seaweed was best described with the reaction order of 1. The kinetic results also indicated that seaweed consists of lower activation energy (<30 kJ/mol) in comparison with terrestrial biomass (50–170 kJ/mol). Hence, seaweed has a high potential to be used as biomass feedstock, particularly Chaetomorpha linum, as it has no conflict with other interests. Lastly, acetic-acid pre-treatment was suggested to be an optional process in order to increase the algal conversion efficiency as it can reduce up to 25% of ash content.

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Section: Introductionmentioning

confidence: 99%

Characterization and Analysis of Malaysian Macroalgae Biomass as Potential Feedstock for Bio-Oil Production

et al. 2019

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“… (a) determined after NP synthesis, before redispersion in the commercial alcohol and ligand; (b) the relative error in the weight loss was fixed at 3%, as reported in refs. [ 32 , 33 ]. …”

Section: Figures Scheme and Tablesmentioning

confidence: 99%

“…a) determined after NP synthesis, before redispersion in the commercial alcohol and ligand; (b) the relative error in the weight loss was fixed at 3%, as reported in refs. [32,33]. The dimension of the dispersed ZnO NPs was estimated by dynamic light scattering (DLS, Figure 1b).…”

Section: Scheme 1 Schematic Illustration Of Zno Synthesismentioning

confidence: 99%

Recycled or Bio-Based Solvents for the Synthesis of ZnO Nanoparticles: Characterization and Validation in Organic Solar Cells

Albonetti,

Alkarsifi,

El Qacemi

et al. 2024

Materials

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Among solution-processable metal oxides, zinc oxide (ZnO) nanoparticle inks are widely used in inverted organic solar cells for the preparation, at relatively low temperatures (<120 °C), of highly efficient electron-transporting layers. There is, however, a recent interest to develop more sustainable and less impacting methods/strategies for the preparation of ZnO NPs with controlled properties and improved performance. To this end, we report here the synthesis and characterization of ZnO NPs obtained using alternative reaction solvents derived from renewable or recycled sources. In detail, we use (i) recycled methanol (r-MeOH) to close the loop and minimize wastes or (ii) bioethanol (b-EtOH) to prove the effectiveness of a bio-based solvent. The effect of r-MeOH and b-EtOH on the optical, morphological, and electronic properties of the resulting ZnO NPs, both in solution and thin-films, is investigated, discussed, and compared to an analogous reference material. Moreover, to validate the properties of the resulting materials, we have prepared PTB7:PC71BM-based solar cells containing the different ZnO NPs as a cathode interlayer. Power conversion efficiencies comparable to the reference system (≈7%) were obtained, validating the proposed alternative and more sustainable approach.

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“…Finally, curve-fitting optimization methods are very efficient for complex processes involving multiple reactions, but require significant computational effort [27][28][29][30][31][32][33][34][35][36].…”

Section: Introductionmentioning

confidence: 99%

A Simple Direct Method to Obtain Kinetic Parameters for Polymer Thermal Decomposition

et al. 2021

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In a fire, the polymer combustion occurs when gaseous fuels react with oxygen. The heating of a material could force the release of gaseous fuels during thermal decomposition and pyrolysis. The rate of pyrolysis to define the gaseous fuels is usually interpreted by means of the Arrhenius expression and a reaction model expression, which are characterized by an activation energy, a pre-exponential factor, and a reaction order value. Many methods are available for determining kinetic parameters from thermogravimetric experimental data. However, the most challenging issue is achieving an adequate balance between accuracy and simplicity. This work proposes a direct method for determining the kinetic parameters with only a thermogravimetric experiment at a single heating rate. The method was validated with six polymers, and the results were compared with those from similar procedures, such as the Lyon method and generalized direct method. The results achieved using the simpler approach of the proposed method show a high level of accuracy.

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Thermal oxidative decomposition estimation combining TGA and DSC as optimization targets for PMMA

Cited by 7 publications

References 15 publications

Characterization and Analysis of Malaysian Macroalgae Biomass as Potential Feedstock for Bio-Oil Production

Characterization and Analysis of Malaysian Macroalgae Biomass as Potential Feedstock for Bio-Oil Production

Recycled or Bio-Based Solvents for the Synthesis of ZnO Nanoparticles: Characterization and Validation in Organic Solar Cells

A Simple Direct Method to Obtain Kinetic Parameters for Polymer Thermal Decomposition

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