article · International Journal of Polymer Analysis and Characterization
A sequence of chemical treatments has been developed to extract cellulose microfibers from Palmyra palm fruit fibers, involving acidified chlorination, alkalisation, and acid hydrolysis. Comprehensive characterisation demonstrated that the resulting microfibers possessed a higher proportion of alpha-cellulose alongside reduced levels of non-cellulosic components, specifically lignin and hemicellulose. Spectroscopic analysis confirmed the effective removal of these non-cellulosic constituents. Furthermore, X-ray diffraction showed that the chemical processing partially converted cellulose I into cellulose II, leading to a significant rise in the crystallinity index relative to raw fibers. Thermal analysis established that the cellulose microfibers gained noticeably higher thermal stability, while microscopic imaging revealed that the microfibers developed cleaner and rougher surfaces compared to the untreated starting material.
Plant-derived microfibers provide renewable building blocks for materials science and bio-based manufacturing. Demonstrating an effective extraction method for Palmyra palm fruit fibers helps convert agricultural residue into refined cellulose with increased crystallinity and thermal stability, expanding the range of natural raw materials available for technical processing.
The abstract does not indicate a specific application pathway, end user, or commercial readiness level for the extracted microfibers.
AI-generated from the published abstract. Always read the original work before citing.
To obtain cellulose microfibers from Palmyra palm fruit fibers, a new succession of specific chemical treatments including acidified chlorination, alkalization, and acid hydrolysis have been developed. Cellulose microfibers obtained were characterized by different techniques. The chemical analysis indicated an increase in α-cellulose content and decrease in lignin and hemicellulose for the cellulose microfibers over raw fibers. Fourier transform infrared and 13C NMR spectra confirmed the removal of non-cellulosic (lignin and hemicellulose) components after chemical treatments. The X-ray diffraction results revealed that the cellulose I was partly transformed into cellulose II by chemical treatments and the crystallinity index of cellulose microfibers was significantly increased as compared to raw fibers owing to removal of non-cellulosic components. Thermogravimetric analysis results demonstrated that the thermal stability was enhanced noticeably for cellulose microfibers than for the raw fibers. The scanning electron micrographs illustrated cleaner and rough surfaces for the cellulose microfibers when compared to those of raw fibers.
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DOI: 10.1080/1023666x.2016.1147799
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