Evaluation of eco-friendly cellulose and lignocellulose nanofibers from rice straw using Multiple Quality Index | ||
| Egyptian Journal of Chemistry | ||
| Article 68, Volume 64, Issue 8, August 2021, Pages 4707-4717 PDF (926.32 K) | ||
| Document Type: Review Articles | ||
| DOI: 10.21608/ejchem.2021.77618.3800 | ||
| Authors | ||
| Mohamed Taha1; Mohammad Hassan* 2; Montasser Dewidare3; M.A. kamel4; W. Y. Ali5; Alain Dufresne6 | ||
| 1Mechanical Engineering Department, College of Engineering and Technology, Arab Academy of Science, Technology and Maritime Transport, Sadat Road - P.O. Box 11, Aswan, Egypt | ||
| 2NRC | ||
| 3Higher Institute of Engineering and Technology, Kafrelsheikh 33516, Egypt | ||
| 4Faculty of Engineering, Minia University, Minia, Egypt | ||
| 5Faculty of Engineering, Minia University, Minia, Egypt. | ||
| 6Univ. Grenoble Alpes, CNRS, Grenoble INP, LGP2, F-38000 Grenoble, France | ||
| Abstract | ||
| Huge amounts of rice straw are left every year in different areas of the world; these residues still cause environmental problems due to un-safe practices such as burning. Isolation of nanomaterials such as cellulose nanofibers represents an effective way for utilization of rice straw in advanced products. The current work aimed at evaluating the properties of rice straw cellulose nanofibers isolated from bleached and high-lignin unbleached pulps using a multi-criterion quality index, which allows a benchmarking analysis between different sources, processes and features. Rice straw was subjected to neutral sulfite pulping process to obtain the high-lignin unbleached pulp while the bleached pulp was obtained by bleaching the produced pulp with NaClO2/acetic acid mixture. Using mechanical pretreatment (Valley beater), and ultrafine friction grinder both bleached and unbleached pulps were used to obtain cellulose nanofibers with and without lignin (L-CNF and CNF, respectively). Nanopaper sheets were prepared from both types of nanofibers and characterized using tensile tests, optical microscopy, atomic force microscopy, electron scanning microscopy, water contact angle and surface energy. Cellulose nanofibers generated from rice straw were scored using a multi-criterion quality index depending on characterization using eight tests (nanosized and macro size fraction, turbidity, Young's modulus, porosity, transmittance, tear resistance, and homogeneity). | ||
| Keywords | ||
| Rice straw; Rice Straw nanofibers (RSNF); Lignocellulose Rice Straw nanofibers (LRSNF); Nanopaper properties; Quality Index | ||
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