Electronic Resource
The effect of residual lignin on the rheological properties of cellulose nanofibril suspensions
| العنوان: | The effect of residual lignin on the rheological properties of cellulose nanofibril suspensions |
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| المؤلفون: | Sustainable Biomaterials, Macromolecules Innovation Institute, Iglesias, Maria C., Shivyari, Niloofar, Norris, Ann, Martin-Sampedro, Raquel, Eugenio, M. E., Lahtinen, Panu, Auad, Maria L., Elder, Thomas, Jiang, Zhihua, Frazier, Charles E., Peresin, Maria S. |
| بيانات النشر: | 2020-10-10 |
| نوع الوثيقة: | Electronic Resource |
| مستخلص: | Although the removal of lignin and hemicelluloses from cellulose pulp to produce fully bleached cellulose nanofibrils (B-CNF) is the most common practice, the presence of residual lignin and hemicelluloses in raw materials for the production of lignin containing cellulose nanofibrils (LCNFs) holds several advantages. In this work, we investigated the effect of residual lignin inEucalyptus globuluscellulose fibers on the properties of the resulting LCNFs. The stability of the colloidal suspensions was assessed by zeta-potential values and charge density analyses. Morphology of the CNFs was studied using scanning electron microscopy and atomic force microscopy. Fibril diameter and diameter distributions for CNFs with different levels of residual lignin showed a decrease on fiber diameter as the lignin content increases. Differences in the chemical composition of the CNFs was evidenced as indicated in the Fourier-transform infrared spectroscopy spectra, particularly in fingerprint region. Thermal behavior of the CNFs was not altered by the presence of lignin, as indicated by thermogravimetric analysis. Finally, the rheological behavior of the samples was evaluated observing a gel-like behavior as well as an increase of the viscosity in LCNFs with higher lignin contents. |
| مصطلحات الفهرس: | Lignin-containing cellulose nanofibrils, LCNFs, rheology, residual lignin, ligno-nanofibers, cellulosic nanofibers, Article - Refereed |
| URL: | |
| الاتاحة: | Open access content. Open access content http://creativecommons.org/publicdomain/mark/1.0 Public Domain |
| ملاحظة: | English |
| Other Numbers: | VPI oai:vtechworks.lib.vt.edu:10919/102641 0277-3813 https://doi.org/10.1080/02773813.2020.1828472 40 6 1532-2319 1389867192 |
| المصدر المساهم: | VIRGINIA TECH From OAIster®, provided by the OCLC Cooperative. |
| رقم الانضمام: | edsoai.on1389867192 |
| قاعدة البيانات: | OAIster |
| الوصف غير متاح. |