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Issue 7, 2015
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Mercerisation of cellulose in aqueous NaOH at low concentrations

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Abstract

In this study, mercerisation of native cellulose I was achieved in an aqueous sodium hydroxide solution at a concentration of only 1 wt% NaOH by processing at temperatures below 0 °C. This represents a tenfold reduction in the use of NaOH to accomplish this very common transformation. The cellulose sample was a form of hydrolysed cotton with a high crystallinity. The samples were mixed with aqueous sodium hydroxide at various concentrations and stored at −17 °C. The samples were then defrosted, neutralised and dried before being analysed by Fourier-transform infrared spectroscopy, wide-angle X-ray diffraction and field-emission scanning electron microscopy. In the route described here, transformation from cellulose I to cellulose II was possible without greatly affecting the crystallinity or the microstructure of the samples.

Graphical abstract: Mercerisation of cellulose in aqueous NaOH at low concentrations

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Supplementary files

Article information


Submitted
13 Mar 2015
Accepted
29 May 2015
First published
02 Jun 2015

Green Chem., 2015,17, 3941-3947
Article type
Paper
Author version available

Mercerisation of cellulose in aqueous NaOH at low concentrations

B. J. C. Duchemin, Green Chem., 2015, 17, 3941
DOI: 10.1039/C5GC00563A

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