Oxidation and sulfonation of cellulosics |
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| Authors: | Jianguo Zhang Nan Jiang Zheng Dang Thomas J Elder Arthur J Ragauskas |
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| Institution: | (1) School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332, USA;(2) School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA;(3) USDA-Forest Service, South Research Station, Pineville, LA 71360, USA |
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| Abstract: | Bleached hardwood (HW) kraft pulp and derived nanocellulosic structures were modified by a periodate oxidation followed by
treatment with sodium bisulfite to yield the corresponding C2/3 sulfonates. The impact of this oxidative–reductive protocol
on the chemical and physical properties of cellulose was evaluated by determining physical dimensions, functional groups,
and their water absorbency properties. It was found that the water absorbency of cellulosic material can be enhanced by 8.0–199.0%
with this oxidation/sulfonation protocol. Distinct differences were observed between sulfonated pulp fibers and nanocellulosic
structures, with the latter exhibiting relatively higher water retention values (WRV). |
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| Keywords: | Cellulose Nanostructures Periodate oxidation Sulfonation Water retention |
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