Production of tung oil epoxy resin using low frequency high power ultrasound

Silva, Raquel S.; Maia, Dayanne L. H.; Fernandes, Fabiano Ándré Narciso

doi:10.1016/j.ultsonch.2021.105765

Cited by 12 publications

(6 citation statements)

References 28 publications

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“…Improved results in terms of conversion and selectivity were obtained using formic acid and the best results were obtained working in the presence of both ultrasound and acid catalyst with a yield of 98% in almost 2.5 h of reaction at 50 °C. Silva et al 212 carried out a comparative study between conventional and ultrasound-assisted epoxidation of tung oil following the research concept of Maia and Fernandes. 211 In this study, the effect of the reactant concentrations was evaluated by varying the carboxylic acid and hydrogen peroxide-to-oil molar ratio and no acid catalyst was used.…”

Section: Process Improvement and Intensification Effortsmentioning

confidence: 99%

Epoxidation of Vegetable Oils via the Prilezhaev Reaction Method: A Review of the Transition from Batch to Continuous Processes

Cogliano,

Turco,

Di Serio

et al. 2024

Ind. Eng. Chem. Res.

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Section: Process Improvement and Intensification Effortsmentioning

confidence: 99%

Epoxidation of Vegetable Oils via the Prilezhaev Reaction Method: A Review of the Transition from Batch to Continuous Processes

Cogliano,

Turco,

Di Serio

et al. 2024

Ind. Eng. Chem. Res.

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“…The reason may be that the increased in the dosage of hydrogen peroxide promoted the production of performic acid, which in turn promoted the formation of oxirane rings. [53] Too little or too much H 2 O 2 will affect the effect of epoxidation. Because too little H 2 O 2 will generate less peroxyformic acid, resulted in incomplete epoxidation reaction.…”

Section: Effect Of Fydrogen Peroxide Dosagementioning

confidence: 99%

Catalytic performance of HPW/TiO2–SnO2–ZrO2 in soybean oil epoxidation under hydrodynamic cavitation

Cheng

Wei

et al. 2023

J Porous Mater

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BACKGROUNDEpoxidized vegetable oils are widely used as plasticizers, lubricants and reaction intermediates. In this work, a new solid acid catalyst was developed to obtain epoxidized soybean oil in high yield and combined with hydrodynamic cavitation technology to improve the e ciency of epoxidation. The structure and morphology characteristics of the catalyst were studied by XRD, FT-IR, Py-FTIR, NH 3 -TPD, SEM, N 2 -adsorption and desorption analysis and TG techniques. It was applied to the epoxidation of soybean oil, and the in uence of various parameters including catalyst dosage, formic acid dosage, hydrogen peroxide dosage and reaction temperature on the relative conversion rate of oxirane of soybean oil, as well as the recyclability of catalyst was studied. RESULTSThe catalyst has both Lewis and Brönsted acid sites and is stable at high temperatures. Under the optimum reaction conditions, the relative conversion rate of oxirane was 85.08% at 2h. The catalytic activity did not decrease signi cantly after 5 cycles of the reaction. CONCLUSIONThe results show that the catalyst is easy to prepare, has good catalytic activity in catalyzing the epoxidation reaction of soybean oil, and is easy to recover and highly reusable.

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“…18 This article is licensed under CC-BY-NC-ND 4 When structurally converted into polymeric compounds, vegetable oils do not exhibit high rigidity and mechanical properties that are required for structural applications. Therefore, numerous studies have been reported along time regarding the synthesis of green nanocomposites based on vegetable oil epoxy networks derived from linseed, 19 soybean, 20 tung, 21 and castor 22 oils and reinforced with different nanostructures such as GO, 23 multiwalled carbon nanotubes (MWCNTs), 24 polyhedral oligomeric silsesquioxanes (POSSs), 25 and nanoclays 26 for applications in various fields.…”

Section: Introductionmentioning

confidence: 99%

Combined Thermomechanical Effect of Graphene Oxide and Montmorillonite on Biobased Epoxy Network Formation for Coatings

Necolau,

Bălănucă,

Frone

et al. 2024

ACS Omega

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Epoxy nanocomposites derived from linseed oil, reinforced with graphene oxide (GO) and montmorillonite (MMT) nanostructures, were synthesized. The nanohybrids were developed by enriching the structure of MMT and GO with primary amines through a common and simplified method, which implies physical interactions promoted by ultrasonic processing energy. The influence of the new nanoreinforcing agents along with neat ones on the overall properties of the biobased epoxy materials for coating applications was assessed. Interface formation through surface compatibility was contained by the lower values of activation energy calculated from differential scanning calorimetry (DSC) curves, along with a consistent 70% increase in the cross-linking density when aminemodified MMT was used. Thermomechanical characteristics of the biobased epoxy nanocomposites were explained through the interaction of the functional groups over the curing process of epoxidized linseed oil (ELO), giving a 15 °C higher T g value increase. Furthermore, the low surface energy values suggested an intrinsic antibacterial activity, as proved by a significant decrease of CFU against Staphylococcus aureus bacterial strains on the 0.25% reinforced coatings.

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Production of tung oil epoxy resin using low frequency high power ultrasound

Cited by 12 publications

References 28 publications

Epoxidation of Vegetable Oils via the Prilezhaev Reaction Method: A Review of the Transition from Batch to Continuous Processes

Epoxidation of Vegetable Oils via the Prilezhaev Reaction Method: A Review of the Transition from Batch to Continuous Processes

Catalytic performance of HPW/TiO2–SnO2–ZrO2 in soybean oil epoxidation under hydrodynamic cavitation

Combined Thermomechanical Effect of Graphene Oxide and Montmorillonite on Biobased Epoxy Network Formation for Coatings

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