Cellulose gelation in NaOH solutions is due to cellulose crystallization
(2018) In Cellulose 25(6). p.3205-3210- Abstract
Abstract: Cellulose gelation in 2 M NaOH aqueous solution was followed by time resolved turbidity and rheology measurements. The kinetics of gelation is observed to change from several hours down to few seconds when the temperature is increased from 25 to 30 °C. The increase of turbidity upon gelation demonstrates the formation of larger cellulose aggregates, while wide angle X-ray scattering data confirms the gradual formation of crystalline domains. This suggests that the gelation can be understood as cellulose precipitation/crystallization where an effectively cross linked network and gelation results from that cellulose chains may participate in more than one crystallite. Graphical Abstract: The gelation of cellulose solutions is... (More)
Abstract: Cellulose gelation in 2 M NaOH aqueous solution was followed by time resolved turbidity and rheology measurements. The kinetics of gelation is observed to change from several hours down to few seconds when the temperature is increased from 25 to 30 °C. The increase of turbidity upon gelation demonstrates the formation of larger cellulose aggregates, while wide angle X-ray scattering data confirms the gradual formation of crystalline domains. This suggests that the gelation can be understood as cellulose precipitation/crystallization where an effectively cross linked network and gelation results from that cellulose chains may participate in more than one crystallite. Graphical Abstract: The gelation of cellulose solutions is due to crystallization and precipitation of cellulose.[Figure not available: see fulltext.]
(Less)
- author
- Pereira, Ana ; Duarte, Hugo ; Nosrati, Pegah ; Gubitosi, Marta LU ; Gentile, Luigi LU ; Romano, Anabela ; Medronho, Bruno LU and Olsson, Ulf LU
- organization
- publishing date
- 2018-06
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Cellulose, Crystallites, WAXS, Gelation, NaOH
- in
- Cellulose
- volume
- 25
- issue
- 6
- pages
- 3205 - 3210
- publisher
- Springer
- external identifiers
-
- scopus:85045763220
- ISSN
- 0969-0239
- DOI
- 10.1007/s10570-018-1794-3
- language
- English
- LU publication?
- yes
- id
- 4b685837-8fb5-456a-82cd-ebd1fba42233
- date added to LUP
- 2018-05-23 10:24:35
- date last changed
- 2022-04-17 20:38:24
@article{4b685837-8fb5-456a-82cd-ebd1fba42233, abstract = {{<p>Abstract: Cellulose gelation in 2 M NaOH aqueous solution was followed by time resolved turbidity and rheology measurements. The kinetics of gelation is observed to change from several hours down to few seconds when the temperature is increased from 25 to 30 °C. The increase of turbidity upon gelation demonstrates the formation of larger cellulose aggregates, while wide angle X-ray scattering data confirms the gradual formation of crystalline domains. This suggests that the gelation can be understood as cellulose precipitation/crystallization where an effectively cross linked network and gelation results from that cellulose chains may participate in more than one crystallite. Graphical Abstract: The gelation of cellulose solutions is due to crystallization and precipitation of cellulose.[Figure not available: see fulltext.]</p>}}, author = {{Pereira, Ana and Duarte, Hugo and Nosrati, Pegah and Gubitosi, Marta and Gentile, Luigi and Romano, Anabela and Medronho, Bruno and Olsson, Ulf}}, issn = {{0969-0239}}, keywords = {{Cellulose; Crystallites, WAXS; Gelation; NaOH}}, language = {{eng}}, number = {{6}}, pages = {{3205--3210}}, publisher = {{Springer}}, series = {{Cellulose}}, title = {{Cellulose gelation in NaOH solutions is due to cellulose crystallization}}, url = {{http://dx.doi.org/10.1007/s10570-018-1794-3}}, doi = {{10.1007/s10570-018-1794-3}}, volume = {{25}}, year = {{2018}}, }