Journal
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
Volume 483, Issue -, Pages 257-263Publisher
ELSEVIER
DOI: 10.1016/j.colsurfa.2015.03.011
Keywords
Cellulose; Dissolution; Crystallinity; Regeneration; Hydrophobic interactions; Tetrabutylammonium hydroxide
Categories
Funding
- Portuguese Foundation for Science and Technology (FCT) [PTDC/AGR-TEC/4049/2012, SFRH/BD/80556/2011, SFRH/BPD/74540/2010]
- Sodra Skogsagarnas Stiftelse
- Stiftelsen Nils och Dorthi Troedssons forskningsfond
- CelluNova consortium
- Fundação para a Ciência e a Tecnologia [SFRH/BD/80556/2011, PTDC/AGR-TEC/4049/2012] Funding Source: FCT
Ask authors/readers for more resources
The development of strategies for dissolution and regeneration of cellulose constitutes an increasingly active research field due to the direct relevance for many production processes and applications. A wide variety of suitable solvents for cellulose are already available. However, cellulose solvents are of highly different nature reflecting the great challenges in the understanding of the subtle balance between the different interactions. Here, we report on the effect of two different solvents on the dissolution of cellulose on multiple length scales and its consequences for the characteristics of the regenerated material. While an aqueous tetrabutylammonium hydroxide solution gives rise to what appears to be dissolution down to the molecular level, a sodium hydroxide solution does not dissolve cellulose molecularly but rather leaves aggregates of high crystallinity stable in the cellulose dope. The dramatic difference between a small inorganic cation and an amphiphilic cation indicates a critical role of hydrophobic interactions between cellulose molecules and provides support for the picture that cellulose molecules have pronounced amphiphilic properties. (C) 2015 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available