Morphological and property investigations of carboxylated cellulose nanofibers extracted from different biological species

• Published in: Cellulose (London) Vol. 22; no. 5; pp. 3127 - 3135
• Main Authors: Su, Ying, Burger, Christian, Ma, Hongyang, Chu, Benjamin, Hsiao, Benjamin S.
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01.10.2015; Springer Nature B.V; Springer
• Subjects: Bamboo; Bioorganic Chemistry; Cellulose; Ceramics; Chemistry; Chemistry and Materials Science; Composites; Cotton; Glass; Nanofibers; Natural Materials; Organic Chemistry; Original Paper; Oxidation; Physical Chemistry; Piperidine; Polymer Sciences; Small angle X ray scattering; Sustainable Development; Transmission electron microscopy; TEMPO oxidation; Wood; Cotton; Bamboo; Cellulose nanofibers; SAXS
• ISSN: 0969-0239; 1572-882X
• DOI: 10.1007/s10570-015-0698-8

Carboxylated cellulose nanofibers were extracted from different biological species, including cotton, spruce wood, bamboo and bacterial cellulose, through a combined (2,2,6,6-tetramethyl- piperidine-1-yl)oxyl (TEMPO)-mediated oxidation and mechanical defibrillation treatment. The cross-section dimensions of isolated cellulose nanofibers in suspension were characterized by small-angle X-ray scattering, where the results were in agreement with the transmission electron microscopy measurement. For the spruce wood samples, the effects of three experimental variables in the combined TEMPO-oxidation and mechanical treatment on the dimensions and degree of oxidation of the resulting cellulose nanofibers were quantitatively investigated.