Homogeneous microwave-assisted carboxymethylation from totally chlorine free bleached olive tree pruning residues pulp
| Autor: | Omar Harzallah, Narjes Rjiba, Mohamed Hamdaoui, Chedly Boudokhane, Imen Landolsi |
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| Rok vydání: | 2022 |
| Předmět: |
Pulp (paper)
technology industry and agriculture macromolecular substances General Chemistry engineering.material Chemical synthesis Solvent chemistry.chemical_compound chemistry Chemical engineering Yield (chemistry) Scientific method engineering Cellulose Fourier transform infrared spectroscopy Derivative (chemistry) |
| Zdroj: | Journal of the Serbian Chemical Society. 87:247-261 |
| ISSN: | 1820-7421 0352-5139 |
| Popis: | This study deals with a new methodology for the production of carboxymethyl cellulose (CMC) from olive pruning residues, agricultural by-products. Cellulose was extracted by the soda?anthraquinone pulping process, and the pulp bleaching was performed using totally chlorine free (TCF) bleaching. Then, CMC microwave-assisted synthesis was performed in a homogeneous media, using DMA/LiCl as a cellulose solvent. A Box?Behnken design was applied in order to evaluate which parameters of the carboxymethylation process (viz. reaction time, reaction temperature, and amount of monochloroacetic acid) affect the degree of substitution and the yield of the synthesis reaction of this cellulose derivative. Optimized conditions to yield CMC were determined based on the desirability function approach. The prepared materials under synthesis using the optimal conditions were characterized using several analytical tools, i.e., FTIR, TGA, DSC and SEM. This cellulose derivative was successfully fabricated by a fast and efficient microwave-assisted method and thus would provide many opportunities for diverse applications. |
| Databáze: | OpenAIRE |
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