Use of multi-factorial analysis to determine the quality of cellulose nanofibers: effect of nanofibrillation treatment and residual lignin content
| Autor: | Julien Bras, Eduardo Espinosa, Fleur Rol, Alejandro Rodríguez |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Polymers and Plastics Pulp (paper) Plastics extrusion food and beverages 02 engineering and technology Straw engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology Pulp and paper industry 01 natural sciences 0104 chemical sciences Nanocellulose chemistry.chemical_compound chemistry Cellulosic ethanol Nanofiber engineering Lignin Cellulose 0210 nano-technology |
| Zdroj: | Cellulose. 27:10689-10705 |
| ISSN: | 1572-882X 0969-0239 |
| DOI: | 10.1007/s10570-020-03136-3 |
| Popis: | The aim of this work is to study and compare the influence of different nanofibrillation processes on the properties of cellulose nanofibers from wheat straw, and analyze the effect of the lignin in the nanocellulose quality and on the characteristics of the films produced. Wheat straw was subjected to a soda (NaOH) pulping process to obtain unbleached cellulosic pulp. The cellulosic pulp was bleached with NaClO2 in order to remove the lignin of the fiber. Both bleached and unbleached pulps were used to obtain nanocellulose using mechanical pretreatment (PFI refining) and treatments, (high pressure homogenization, twin-screw extruder and ultrafine friction grinder). The effect of the nanofibrillation treatments and the residual lignin content on cellulose nanofiber production was analyzed by means of a deep characterization. A multi-factorial quality index was used to score the cellulose nanofibers produced to enable a benchmarking study between different sources, processes and characteristics. In addition, an energetic study of the production process was carried out for the different treatments. The different nanofibers were used to produce cellulose nanofiber-based films and characterized in order to establish a relationship between the characteristics of cellulose nanofibers and the characteristics of the final product. |
| Databáze: | OpenAIRE |
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