Reactive Deep Eutectic Solvent for an Eco-Friendly Synthesis of Cellulose Carbamate
Author:
Algieri Vincenzo1ORCID, Maiuolo Loredana1ORCID, Procopio Debora2ORCID, Costanzo Paola1ORCID, Nicoletta Fiore Pasquale2ORCID, Trombino Sonia2ORCID, Di Gioia Maria Luisa2ORCID, De Nino Antonio1ORCID
Affiliation:
1. Department of Chemistry and Chemical Technologies, University of Calabria, Via P. Bucci, Cubo 12C, 87036 Rende, CS, Italy 2. Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, ed. polifunzionale, 87036 Rende, CS, Italy
Abstract
The limited solubility of natural cellulose in water and common organic solvents hinders its diverse applications, despite being one of the most abundant and easily accessible biopolymers on Earth. Chemical derivatization, such as cellulose carbamate (CC), offers a pathway to enhance both solubility and industrial processability. In this study, CC was synthesized by exploiting a novel type IV deep eutectic solvent (DES) composed of erbium trichloride and urea. This DES was shown to be not only an environmentally friendly reaction medium/catalyst but also actively participated in the synthetic process as a reagent. The resultant cellulose carbamate samples were characterized through FT-IR and elemental analysis. A nitrogen content value of 1.59% was afforded determining a degree of substitution corresponding to a value of 0.19. One of the key scientific advancements lies in the preparation of cellulose carbamate using a straightforward and cost-effective method. This approach utilizes non-toxic compounds, aligning with the principles of green chemistry and contributing to sustainable development in cellulose derivative production.
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