Valorization of Pineapple Residues from the Colombian Agroindustry to Produce Cellulose Nanofibers

Cellulose nanofiber is the world’s most advanced biomass material. Most importantly, it is biodegradable. In this work, nanofibers were obtained from pineapple leaves, a large solid waste in Colombia, using a combined extraction method (chemical procedures and ultrasound). The native fibers were ble...

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Bibliographic Details
Published in:Applied sciences 2022-07, Vol.12 (14), p.6956
Main Authors: Guancha-Chalapud, Marcelo A., Serna-Cock, Liliana, Tirado, Diego F.
Format: Article
Language:English
Subjects:
agro-industrial waste revalorization
Biodegradability
Biodegradable materials
Biodegradation
bioeconomy
Biopolymers
bioprospecting
Bleaching
Cellulose
Cellulose fibers
cellulose nanofiber
circular economy
Composite materials
Cosmetics
Crystalline cellulose
Electron microscopy
Electronic equipment
Electronic packaging
Fibers
Fruits
Health care
Industrial wastes
Infrared analysis
Leaves
Lignin
Lignocellulose
Morphology
Nanofibers
Packaging
Physical characteristics
Physical properties
Pineapples
Polymer matrix composites
Residues
Scanning electron microscopy
Solid wastes
Sustainable materials
Thermogravimetric analysis
Transmission electron microscopy
Ultrasonic imaging
Ultrasonic testing
Ultrasound
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Summary:Cellulose nanofiber is the world’s most advanced biomass material. Most importantly, it is biodegradable. In this work, nanofibers were obtained from pineapple leaves, a large solid waste in Colombia, using a combined extraction method (chemical procedures and ultrasound). The native fibers were bleached, hydrolyzed, treated with ultrasound, and characterized by scanning electron microscopy (SEM), infrared analysis (FTIR), thermogravimetric analysis (TGA), and transmission electron microscopy (TEM). As a comparison, a commercial microcrystalline cellulose sample was analyzed, which demonstrated the efficiency of cellulose extraction. The nanofibers had a diameter and a length of 18 nm and 237 nm, respectively, with a maximum degradation temperature of 306 °C. The analysis showed the efficiency of acid treatment combined with ultrasound to obtain nanofibers and confirmed that pineapple residues can be valorized by this method. These results indicate that lignocellulosic matrices from pineapple leaves have potential application for obtaining polymeric-type composite materials. Due to their morphology and characteristic physical properties, the cellulose nanofibers obtained in this work could be a promising material for use in a wealth of fields and applications such as filter material, high gas barrier packaging material, electronic devices, foods, medicine, construction, cosmetics, pharmacy, and health care, among others.
ISSN:2076-3417
2076-3417
DOI:10.3390/app12146956