Article

TEMPO-Oxidized Cellulose with High Degree of Oxidation

Zuwu TangCollege of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, ChinaWenyan LiCollege of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, ChinaXinxing LinCollege of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, ChinaHe XiaoCollege of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, ChinaQingxian MiaoCollege of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, ChinaLiulian HuangCollege of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, ChinaLihui ChenCollege of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, ChinaHui WuCollege of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China

2017en

ABI

Abstract

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.

Identifiers

DOI: 10.3390/polym9090421

Citations and references

Cited by 20 references

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