Microwave-Assisted Syntheses of Vegetable Oil-Based Monomer: A Cleaner, Faster, and More Energy Efficient Route

Alarcon, Rafael Turra; Gaglieri, Caroline; Souza, Otávio Aguiar; Rinaldo, Daniel; Bannach, Gilbert

doi:10.1007/s10924-020-01680-4

Cited by 17 publications

(36 citation statements)

References 50 publications

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“…This illustrates that this transition is related to a complicated and consecutive degradation. This behavior was similar to trends reported in the literature for other modified vegetable oils (Alarcon et al, 2020). The MDR for the first DTG peak was equal to 8.7% min -1 .…”

Section: Tg/dtg-dta and Dscsupporting

confidence: 90%

“…The first two endothermic events at -6.5 ºC and 14.1 ºC have enthalpy values () equal to 21.4 J g -1 and 2.8 J g -1 , respectively; furthermore, theseeventswere associated with a melting process of the non-intersoluble triglycerides, in particular those with more quantity of saturated fatty acid chains. This process has been previously reported for other modified vegetable oils (Alarcon et al, 2020). The third thermal event was an endothermic peak at 43.5 ºC (= 45.4 J g -1 ), which was related to the total melting process of the epoxidized oil.…”

Section: <Figure 7>supporting

confidence: 78%

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Spectroscopic characterization and thermal behavior of baru nut and macaw palm vegetable oils and their epoxidized derivatives

Alarcon

Gaglieri

Lamb

et al. 2020

Industrial Crops and Products

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The ability to produce new and renewable, epoxidized Brazilian vegetable oils from baru nut (Dipteryx alata Vogel) and macaw palm (Acrocomia aculeata) oil, using a fast and clean heterogeneous catalytic method, was investigated. The Wijs method and Proton Nuclear Magnetic Resonance ( 1 H-NMR) analysis were utilized, and compared to one another, to calculate the iodine value (IV), average number of double bonds (DBaverage) and fatty acid content, and thus degree of epoxidation, for both vegetable oils. This analysis indicated that alkene conversions of 100 and 95.3% were obtained for baru nut oil and macaw palm oil, respectively; which is an excellent result when compared with some works in literature. The epoxidized Baru nut oil is a solid at room temperature, which was related to the percentage of mono-unsaturated fatty acids present in its structure. Epoxide samples were also analyzed via mid-Infrared Spectroscopy and 13 C NMR analysis. Thermogravimetry-differential thermal analysis (TG-DTA) was used to determine the thermal stability of these epoxidized oils. Differential Scanning Calorimetry (DSC) also provided information about their crystallization, melting and solid-solid transition processes.

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Section: Tg/dtg-dta and Dscsupporting

confidence: 90%

Section: <Figure 7>supporting

confidence: 78%

Spectroscopic characterization and thermal behavior of baru nut and macaw palm vegetable oils and their epoxidized derivatives

Alarcon

Gaglieri

Lamb

et al. 2020

Industrial Crops and Products

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“…Thereafter, the maleinised vegetable oil can be reacted with polyalcohols to form polyesters [94] . To reduce the reaction time, a microwave‐assisted procedure can be performed, reducing the reaction time to only 15 min [95] …”

Section: Soybeanmentioning

confidence: 99%

“…[94] To reduce the reaction time, a microwaveassisted procedure can be performed, reducing the reaction time to only 15 min. [95] It is known that when soybean oil is exposed to daylight in the presence of oxygen, a polymeric film can be formed via an oxidation reaction. This process, however, takes a long time (1 month).…”

Section: Soybean Oil As a Source Of Chemicals And Materialsmentioning

confidence: 99%

Opportunities for the Use of Brazilian Biomass to Produce Renewable Chemicals and Materials

et al. 2020

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This Review highlights the principal crops of Brazil and how their harvest waste can be used in the chemicals and materials industries. The Review covers various plants; with grains, fruits, trees and nuts all being discussed. Native and adopted plants are included and studies on using these plants as a source of chemicals and materials for industrial applications, polymer synthesis, medicinal use and in chemical research are discussed. The main aim of the Review is to highlight the principal Brazilian agricultural resources; such as sugarcane, oranges and soybean, as well as secondary resources, such as andiroba brazil nut, buriti and others, which should be explored further for scientific and technological applications. Furthermore, vegetable oils, carbohydrates (starch, cellulose, hemicellulose, lignocellulose and pectin), flavones and essential oils are described as well as their potential applications.

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“…Vegetable oil can react with maleic anhydride (maleinization reaction) under heating by a pericyclic reaction called "Ene" or by two different types of radical reaction to provide triacylglycerol structures with anhydride moieties (maleinization reaction). [1][2][3] Several manuscripts have published studies about the maleinization reaction with different vegetable oils. Eren, Küsefoglu, and Wool synthetized maleinized soybean oil to be further reacted with polyalcohols (ethylene glycol, glycerol, pentaerythritol, inositol and so on) to form polymers with soft solid, sticky, and rubbery features.…”

Section: Introductionmentioning

confidence: 99%

AIE Effect by Oxygen Clustering in Vegetable Oil‐Based Polymers

et al. 2021

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Vegetable oil has been widely used to synthesize monomers and polymers in different fields. Some authors have found different polymers in maleinized vegetable oil; however, they have not described the luminescent properties of the polymers in an intensive way. This work aimed to synthesize new polymers from macadamia oil using diethylene glycol and glycerol as crosslinkers and their characterization The results obtained by spectroscopic analyses confirmed the incorporation of anhydride, as well as the reactions for the final polymers. Results from UV-Vis showed that maleinized macad-amia oil presented an aggregation-induced emission effect with solvatochromic effect with absorption at 201.6 nm (ethanol) and 241.8 nm (chloroform), which was corroborated by theoretical calculations. Moreover, the luminescent property exhibited by both obtained polymers was kept even after the swelling test, and powdering the samples. Therefore, these polymers, synthetized in a fast way and without catalyst, open a new field of renewable and sustainable materials with luminescent properties that can be applied in technological fields, such as solar cells and fluorescent sensors.

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Microwave-Assisted Syntheses of Vegetable Oil-Based Monomer: A Cleaner, Faster, and More Energy Efficient Route

Cited by 17 publications

References 50 publications

Spectroscopic characterization and thermal behavior of baru nut and macaw palm vegetable oils and their epoxidized derivatives

Spectroscopic characterization and thermal behavior of baru nut and macaw palm vegetable oils and their epoxidized derivatives

Opportunities for the Use of Brazilian Biomass to Produce Renewable Chemicals and Materials

AIE Effect by Oxygen Clustering in Vegetable Oil‐Based Polymers

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