Valorization of Banana Peel Waste Used as Filler in Castor Oil Polyurethane Foam for Vegetal Oil Sorption

Martins, Larissa de Souza; Zanini, Noelle C.; Pinheiro, Lara A.

doi:10.1080/15440478.2021.1958414

Cited by 9 publications

(7 citation statements)

References 30 publications

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“…All the RPUF presented similarly shaped FTIR spectra ( Figure 3 ), which indirectly indicates chemically similar structures. Main FTIR signals were found at 900–1200 (C–O–C groups from the polyol and C–N urethane linkages), 1520 (N–H amide II groups), 1720 (H–C=O urethane linkages) and 2850–2970 (CH 2 and CH 3 groups) cm −1 [ 8 , 12 , 24 ]. In addition, the broad peak at 3400 cm −1 can be associated with –OH groups from absorbed moisture [ 8 ].…”

Section: Resultsmentioning

confidence: 99%

“…Main FTIR signals were found at 900–1200 (C–O–C groups from the polyol and C–N urethane linkages), 1520 (N–H amide II groups), 1720 (H–C=O urethane linkages) and 2850–2970 (CH 2 and CH 3 groups) cm −1 [ 8 , 12 , 24 ]. In addition, the broad peak at 3400 cm −1 can be associated with –OH groups from absorbed moisture [ 8 ]. The prominent peak at 2270 cm −1 , which was founded for the RPUF filled with 10 and 15 wt% of bergamot, is related to unreacted NCO groups.…”

Section: Resultsmentioning

confidence: 99%

“…Cellulose-based fibers, micro/nanofibers, nanocrystals, paper and powder, wood flour, lignin particles, natural macro-fibers, silica-based micro/nanoparticles, and domestic and industrial solid residues are some already studied fillers for RPUF [ 7 , 8 , 9 , 10 ]. These vegetable resources provide a higher cost benefit compared to synthetic fibers and also represent an increase in sustainable appeal [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

“…Studies on maximizing the use of this fruit have been addressing new applications for leaves, pseudo stem, stalk, and peels. The banana peel represents 30–40% of the entire banana weight, generating about 50 million tons of waste annually, so its peel wastes are readily available and underutilized [ 8 ]. Bergamot fruits are mainly processed by wash-scraping for extract juice and essential oils.…”

Section: Introductionmentioning

confidence: 99%

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Rigid Polyurethane Biofoams Filled with Chemically Compatible Fruit Peels

et al. 2022

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Banana and bergamot peels are underutilized byproducts of the essential oil and juice-processing industry. This study was designed for the development of rigid polyurethane foam (RPUF) composites using polysaccharide-rich fruit peels as fillers. These fillers were characterized for chemical properties using wet analyses. Additionally, the influences of the filler type and filler content on morphological, thermal, mechanical, hygroscopic, and colorimetric properties of the RPUF were investigated. The main results indicated that, in a comparison with the neat RPUF, the insertion of up to 15% of fillers yielded similar water uptake, apparent density, compressive strength, and color properties, as well as increases up to 115% in thermal stability and up to 80% in cell size.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Rigid Polyurethane Biofoams Filled with Chemically Compatible Fruit Peels

et al. 2022

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“…Natural vegetable oil is widely used to prepare polyurethane coating materials because of its low cost, containing a large number of active groups, environmental friendliness and other characteristics 1–3 . Among them, castor oil (CO) has good stability, wettability, degradability and biocompatibility 4–8 .…”

Section: Introductionmentioning

confidence: 99%

Preparation and properties of UV curable room temperature repair bio‐based poly(siloxane‐urethane) coating

Zhang,

et al. 2023

J of Applied Polymer Sci

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In order to improve the problems of traditional self‐healing polyurethane coating, such as harsh curing and repair conditions, poor hydrophobicity, thermal stability and human affinity, the prepolymer was synthesized by bio‐based polyol castor oil (CO), self‐made alkyl aryl modified silicone polyol (SiOH) and isophorone diisocyanate (IPDI), and dimethylglyoxime (DOU) was used as chain extender containing dynamic imine bond, methacrylic acid 2‐(tert‐butylamino)ethyl ester (MABE) was used as a capping agent containing acrylate and high steric hindrance amino structure, and a UV curable room temperature repair bio‐based poly(siloxane‐urethane) coating (PUESi) was prepared by stepwise polymerization. In this article, the effect of the amount of DOU on the properties of PUESi was studied. The results showed that PUESi with different dosages of DOU could achieve self‐healing at room temperature. The maximum repair efficiency of full cut could reach 91.8%, and the scratch repair efficiency could reach 99.3%; The contact angle meter and synchronous thermal analyzer proved that the introduction of SiOH significantly improved the hydrophobicity, oil repellency and thermal stability of PUESi. The water contact angle increased from 78° to 104°, the oil contact angle increased from 63° to 91°, and the 5% thermal decomposition temperature increased from 179 to 196°C. The coating has broad application prospects in the fields such as antifouling and anticorrosion, building material protection, and automotive instruments.

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