Swelling and dissolution of cellulose, Part V: cellulose derivatives fibres in aqueous systems and ionic liquids
The swelling and dissolution mechanisms of several cellulose derivatives (nitrocellulose, cyanoethylcellulose and xanthate fibres) are studied in aqueous systems (N-methylmorpholine-N-oxide—water with various contents of water, hydroxide sodium—water) and in ionic liquids. The results are compared with the five modes describing the swelling and dissolution mechanisms of cotton and wood cellulose fibres. The mechanisms observed for the cellulose derivatives are similar to the ones of cotton and wood fibres. Swelling by ballooning is also seen with cellulose derivatives, showing that this phenomenon is linked to the fibre morphology, which can be kept after undergoing a heterogeneous derivatisation.
KeywordsCyanoethylcellulose Cellulose Dissolution Ionic liquids Nitrocellulose N-methylmorpholine N-oxide Swelling Xanthate
- ([C4mim] + Cl−)
- ([Amim] + Br−)
- ([Bmim] + Br−)
European Polysaccharide Network of Excellence
The authors would like to thank Wolff Cellulosics (J. Engelhardt) and Innovia Films (J. Marshall and M. Cockroft) for their help.
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