Dissolution state of cellulose in aqueous systems. 1. Alkaline solvents
(2016) In Cellulose 23(1). p.247-258- Abstract
- The understanding of the state of dissolution of cellulose in a certain solvent is a critical step forward in the development of new efficient solvent systems for cellulose. Nevertheless, obtaining such information is not trivial. Recently, polarization transfer solid-state NMR (PTssNMR) was shown to be a very promising technique regarding an efficient and robust characterization of the solution state of cellulose. In the present study, combining PTssNMR, microscopic techniques and X-ray diffraction, a set of alkaline aqueous systems are investigated. The addition of specific additives, such as urea or thiourea, to aqueous NaOH based systems as well as the use of an amphiphilic organic cation, is found to have pronounced effects on the... (More)
- The understanding of the state of dissolution of cellulose in a certain solvent is a critical step forward in the development of new efficient solvent systems for cellulose. Nevertheless, obtaining such information is not trivial. Recently, polarization transfer solid-state NMR (PTssNMR) was shown to be a very promising technique regarding an efficient and robust characterization of the solution state of cellulose. In the present study, combining PTssNMR, microscopic techniques and X-ray diffraction, a set of alkaline aqueous systems are investigated. The addition of specific additives, such as urea or thiourea, to aqueous NaOH based systems as well as the use of an amphiphilic organic cation, is found to have pronounced effects on the dissolution efficiency of cellulose. Additionally, the characteristics of the regenerated material are strongly dependent on the dissolution system; typically less crystalline materials, presenting smoother morphologies, are obtained when amphiphilic solvents or additives are used. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/8728602
- author
- Alves, Luis ; Medronho, Bruno ; Antunes, Filipe E. ; Topgaard, Daniel LU and Lindman, Bjorn
- organization
- publishing date
- 2016
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Amphiphilicity, Chain packing, PTssNMR, NaOH, TBAH
- in
- Cellulose
- volume
- 23
- issue
- 1
- pages
- 247 - 258
- publisher
- Springer
- external identifiers
-
- wos:000368802700014
- scopus:84955678486
- ISSN
- 0969-0239
- DOI
- 10.1007/s10570-015-0809-6
- language
- English
- LU publication?
- yes
- id
- 148de532-6dc5-4bdc-8152-6a53aecd37a5 (old id 8728602)
- date added to LUP
- 2016-04-01 13:11:36
- date last changed
- 2022-03-21 17:06:18
@article{148de532-6dc5-4bdc-8152-6a53aecd37a5, abstract = {{The understanding of the state of dissolution of cellulose in a certain solvent is a critical step forward in the development of new efficient solvent systems for cellulose. Nevertheless, obtaining such information is not trivial. Recently, polarization transfer solid-state NMR (PTssNMR) was shown to be a very promising technique regarding an efficient and robust characterization of the solution state of cellulose. In the present study, combining PTssNMR, microscopic techniques and X-ray diffraction, a set of alkaline aqueous systems are investigated. The addition of specific additives, such as urea or thiourea, to aqueous NaOH based systems as well as the use of an amphiphilic organic cation, is found to have pronounced effects on the dissolution efficiency of cellulose. Additionally, the characteristics of the regenerated material are strongly dependent on the dissolution system; typically less crystalline materials, presenting smoother morphologies, are obtained when amphiphilic solvents or additives are used.}}, author = {{Alves, Luis and Medronho, Bruno and Antunes, Filipe E. and Topgaard, Daniel and Lindman, Bjorn}}, issn = {{0969-0239}}, keywords = {{Amphiphilicity; Chain packing; PTssNMR; NaOH; TBAH}}, language = {{eng}}, number = {{1}}, pages = {{247--258}}, publisher = {{Springer}}, series = {{Cellulose}}, title = {{Dissolution state of cellulose in aqueous systems. 1. Alkaline solvents}}, url = {{http://dx.doi.org/10.1007/s10570-015-0809-6}}, doi = {{10.1007/s10570-015-0809-6}}, volume = {{23}}, year = {{2016}}, }