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Deep Eutectic Solvent-Assisted Preparation of Cellulose Nanoparticles from Peanut Shell Waste | ||
| Chemical Process Design | ||
| مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 07 مهر 1405 | ||
| نوع مقاله: Research Article | ||
| شناسه دیجیتال (DOI): 10.22111/cpd.2026.56492.1100 | ||
| نویسندگان | ||
| Targol Najjaran-Tousi1؛ Zahra Hejri* 2؛ Maryam Omidvar1؛ Nadia Sahebjamee1 | ||
| 1Department Of Chemical Engineering, Qu. C., Islamic Azad University, Quchan, Iran | ||
| 2Department Of Chemical Engineering, Faculty of Engineering, Islamic Azad University, Quchan, Iran | ||
| چکیده | ||
| This study presents an environmentally friendly method for extracting cellulose from peanut shells—an abundant agricultural by-product—and converting it into cellulose nanoparticles (CNPs). Cellulose was extracted using a choline chloride : urea (2:1) deep eutectic solvent (DES) at 90 °C for 3 h, followed by bleaching and subsequent mechanical disintegration using probe ultrasonication. The extracted cellulose and CNPs were characterized using Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), dynamic light scattering (DLS), and zeta-potential analysis. FT-IR confirmed the substantial removal of non-cellulosic components while preserving cellulose integrity, whereas XRD indicated the retention of the cellulose structure with good crystallinity. FE-SEM and TEM revealed the formation of nanoscale cellulose structures with particle-like morphology. DLS provided quantitative information on the hydrodynamic size distribution and aggregation behavior of CNPs in aqueous suspension, while zeta-potential measurements indicated the colloidal stability of the resulting suspension. Overall, the results demonstrate that the choline chloride : urea DES provides a sustainable alternative to conventional alkaline–acid processes, avoiding hazardous chemicals while enabling the production of cellulose nanoparticles from peanut shell biomass. The produced CNPs show potential for applications in sustainable packaging, nanocomposites, and other cellulose-based functional materials. | ||
| کلیدواژهها | ||
| Peanut shell؛ Deep eutectic solvent؛ Cellulose؛ Nanofiber؛ Green chemistry؛ Delignification | ||
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