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Polymers 2017, 9(9), 421; doi:10.3390/polym9090421

TEMPO-Oxidized Cellulose with High Degree of Oxidation

College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China
Author to whom correspondence should be addressed.
Received: 5 August 2017 / Revised: 31 August 2017 / Accepted: 3 September 2017 / Published: 6 September 2017
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In this paper, water-soluble 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-oxidized cellulose with a high degree of oxidation was prepared by a two-step process using bamboo dissolving pulp. The first step was to destroy the cellulose crystal I by NaOH/urea solution to obtain cellulose powder with decreased crystallinity. The second step was to oxidize the cellulose powder by TEMPO oxidation. The TEMPO-oxidized cellulose was analyzed by Fourier transform infrared spectroscopy (FTIR), conductimetry, X-ray diffraction (XRD), fiber analyzer, and transmission electron microscopy (TEM). FTIR showed that the hydroxymethyl groups in cellulose chains were converted into carboxyl groups. The degree of oxidation measured by conductimetry titration was as high as 91.0%. The TEMPO-oxidized cellulose was soluble in water for valuable polyelectrolytes and intermediates. View Full-Text
Keywords: cellulose; degree of oxidation; TEMPO cellulose; degree of oxidation; TEMPO

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Tang, Z.; Li, W.; Lin, X.; Xiao, H.; Miao, Q.; Huang, L.; Chen, L.; Wu, H. TEMPO-Oxidized Cellulose with High Degree of Oxidation. Polymers 2017, 9, 421.

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