Development of an electrolytic method to obtain antioxidant for biodiesel from cashew nut shell liquid

Santos, Raimunda Cardoso dos; Amorim, Adriany das Graças Nascimento; Thomasi, Sérgio Scherrer; Figueiredo, Francisco Cardoso; Carneiro, Clécia Silva; Silva, Paulo Robério Pinho da; Neto, Wilson Rosas de Vasconcelos; Ferreira, Antônio G.; Santos, José Ribeiro dos; Leite, José Roberto S. A.

doi:10.1016/j.fuel.2014.11.082

Cited by 22 publications

(11 citation statements)

References 32 publications

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“…The FTIR spectrum of CNSL (Fig. a) shows absorptions bands at 3,030, 1,600, 1,490, 750, and 690 cm −1 that are characteristic of the various vibration modes, respectively, of the =C–H (sp 2 ), C=C, C–H, and C–C bonds of the aromatic ring . This confirms the aromatic nature of CNSL, which major component (approximately 90%) is anacardic acid .…”

Section: Resultssupporting

confidence: 53%

Characterization of wood plastic composite based on HDPE and cashew nutshells processed in a thermokinetic mixer

et al. 2016

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Wood plastic composites (WPC), which are used in high-value markets, contribute to solve some of the problems associated with municipal solid waste accumulation. In this study, the effect of cashew nutshell powder (CNSP) content on properties of formulations with recycled high-density polyethylene, 5 wt% of maleic anhydride grafted polypropylene and 5 wt% of struktol TPW 113, a blend of complex, modified fatty acid ester, was evaluated. Mixtures containing from 20 to 60 wt% CNSP were melt-processed, using a thermokinetic mixer. WPC's were characterized by differential scanning calorimetry, Fourier transform infrared spectroscopy, and melt flow index (MFI) measurements. Composite morphology and mechanical properties were also accessed, respectively, by scanning electron microscopy and tensile tests. Results show that the tensile strength of composites decreased as the content of CNSP increased due to poor reinforcement-matrix interface and voids formed during residual cashew nutshell liquid (CNSL) vaporization. On the other hand, elastic modulus decreased and elongation at break increased, both indicating a plasticizing effect of the residual CNSL, confirmed by crystallinity and MFI data. Differences in the thermal stability of composites were restricted to thermal behavior of main components. POLYM. COMPOS., 00:000-000, 2016.

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Section: Resultssupporting

confidence: 53%

Characterization of wood plastic composite based on HDPE and cashew nutshells processed in a thermokinetic mixer

et al. 2016

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“…Several petrochemical polymers have already been used to reach this purpose, such as polyethylene and polyamide . On the other hand, the use of biopolymers is increasing because they are environmentally friendly and biodegradable . Besides that, their production usually consumes CO 2 .…”

Section: Introductionmentioning

confidence: 99%

Controlled‐release fertilizer based on poly(butylene succinate)/urea/clay and its effect on lettuce growth

Baldanza

Souza

Filho

et al. 2018

J of Applied Polymer Sci

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Controlled‐release fertilizer is one of the most critical tools in agribusiness for decreasing environmental impacts. Thus, the development of bio‐based systems able to induce the slow release of fertilizers has become the focus of numerous researchers. In this sense, this work presents a slow‐release fertilizer prepared by melt mixing of poly(butylene succinate) filled with 30 wt % urea and 5 wt % montmorillonite clay. The obtained materials were characterized using FTIR, XRD, and SAXS. Also, the release of urea was investigated using gravimetric and spectrophotometric tests. Finally, a vegetable growth analysis was performed to evaluate the development of lettuce (Lactuca sativa L.). The best composite material can increase the diameter of the lettuce by 67%, whereas the conventional use of urea increased this diameter by 48%. Therefore, the presented materials are useful as fertilizer systems.

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“…The presence of phenolic hydroxyl group was evidenced by the broad band at 3280 cm −1 . The peaks at 2926 and 1614 cm −1 were attributed to the CH (sp 2 ) vibration and CC vibration on the aromatic ring 27,37 . The peak at 1348 cm −1 was related to the stretching or deformation vibration of COH (phenolic compound) 36 .…”

Section: Resultsmentioning

confidence: 99%

“…The peaks at 2926 and 1614 cm −1 were attributed to the C H (sp 2 ) vibration and C C vibration on the aromatic ring. 27,37 The peak at 1348 cm −1 was related to the stretching or deformation vibration of C O H (phenolic compound). 36 The existence of these bands indicated the existence of phenolic compounds in PPE.…”

Section: Resultsmentioning

confidence: 99%

Natural compounds from Punica granatum peel as multiple stabilizers for polyethylene

Xia

Sui

et al. 2020

Polymer Engineering & Sci

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Punica granatum peel extractive (PPE), a novel stabilizer of polyethylene, is investigated in this study. Oxidation onset temperature (OOT), carbonyl index (CI), melt flow rate (MFR), tensile strength, and elongation at break are used to characterize the effects of PPE, which are also compared with commercial antioxidant (Irganox 1010) with the presence of tetrakis (2,4-di-tert-butylphenol) [1,1-biphenyl]-4,4 0-diylbisphosphite (PEPQ). Long-term and short-term aging results show that samples modified by PPE or Irganox 1010 (PE-PPE 0.12%-P and PE-1010 0.12%-P samples) have comparable CI value and stability of OOT. However, compared with PE-PPE 0.12%-P sample, much higher CI and larger change of MFR is detected for PE-1010 0.12%-P after UV irradiation and five extrusions. It suggests that PPE is better protector for PE against UV light and mechanical shear force. All results indicate that the effect of PPE in protecting PE is comparable or much better than Irganox 1010 and it can be used as multiple stabilizers for PE. Moreover, the stabilities of PE modified with PPE alone (PE-PPE 2%) is also investigated. Results show that PE-PPE 2% sample has good thermo-oxidative, UV and processing stabilities. All results reveal that PPE is a good candidate of PE stabilizer and it could avoid the usage of PEPQ in protecting PE.

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Development of an electrolytic method to obtain antioxidant for biodiesel from cashew nut shell liquid

Cited by 22 publications

References 32 publications

Characterization of wood plastic composite based on HDPE and cashew nutshells processed in a thermokinetic mixer

Characterization of wood plastic composite based on HDPE and cashew nutshells processed in a thermokinetic mixer

Controlled‐release fertilizer based on poly(butylene succinate)/urea/clay and its effect on lettuce growth

Natural compounds from Punica granatum peel as multiple stabilizers for polyethylene

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