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Preparation and characterization of sulfated nanocellulose [Elektronski vir] : from hydrogels to highly transparent filmsJaouahar, Mohamed ...This study focuses on the production of sulfated cellulose microfibers and nanocellulose hydrogels from native cellulose microfibers (CMF). The process involves using a combination of H2SO4 and urea, ... resulting in highly sulfated cellulose microfiber hydrogel (SC) with notable properties such as a sulfur content of 7.5 %, a degree of sulfation of 0.49, a surface charge content of 2.2 mmol. g−1, and a high yield of 81 %. The SC hydrogel can be easily fibrillated into sulfated nanocellulose hydrogel (S-NC) with elongated nanocellulose structures having an average diameter of 6.85 ± 3.11 nm, as determined using atomic force microscopy (AFM). X-ray photoelectron spectroscopy (XPS) analysis confirms the presence of sulfate groups on the surface of the nanocellulose material. Transparent films with good mechanical properties can be produced from both cellulose microfiber and nanocellulose hydrogels. The sulfate functionality gives the hydrogel attractive rheological properties and makes S-NC re-dispersible in water, which can be beneficial for various applications. This study demonstrates the potential of this process to address previous challenges related to nanocellulose materials production.Source: International journal of biological macromolecules [Elektronski vir]. - ISSN 1879-0003 (Vol. 260, pt. 1, [article no.] 129464, Mar. 2024, str. 1-12)Type of material - e-article ; adult, seriousPublish date - 2024Language - englishCOBISS.SI-ID - 183296259
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Jaouahar, Mohamed | |
Ablouh, El-Houssaine | |
Hanani, Zouhair | 56293 |
Jaklič, Blaž, kemijski inženir | 55766 |
Spreitzer, Matjaž, 1979- | 24273 |
Sehaqui, Houssine |
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