Cross-linking cellulose nanofibrils for potential elastic cryo-structured gels
(2011) In Nanoscale Research Letters 6.- Abstract
- Cellulose nanofibrils were produced from P. radiata kraft pulp fibers. The nanofibrillation was facilitated by applying 2,2,6,6-tetramethylpiperidinyl-1-oxyl-mediated oxidation as pretreatment. The oxidized nanofibrils were cross-linked with polyethyleneimine and poly N-isopropylacrylamide-co-allylamine-co-methylenebisacrylamide particles and were frozen to form cryo-structured gels. Samples of the gels were critical-point dried, and the corresponding structures were assessed with scanning electron microscopy. It appears that the aldehyde groups in the oxidized nanofibrils are suitable reaction sites for cross-linking. The cryo-structured materials were spongy, elastic, and thus capable of regaining their shape after a given pressure was... (More)
- Cellulose nanofibrils were produced from P. radiata kraft pulp fibers. The nanofibrillation was facilitated by applying 2,2,6,6-tetramethylpiperidinyl-1-oxyl-mediated oxidation as pretreatment. The oxidized nanofibrils were cross-linked with polyethyleneimine and poly N-isopropylacrylamide-co-allylamine-co-methylenebisacrylamide particles and were frozen to form cryo-structured gels. Samples of the gels were critical-point dried, and the corresponding structures were assessed with scanning electron microscopy. It appears that the aldehyde groups in the oxidized nanofibrils are suitable reaction sites for cross-linking. The cryo-structured materials were spongy, elastic, and thus capable of regaining their shape after a given pressure was released, indicating a successful cross-linking. These novel types of gels are considered potential candidates in biomedical and biotechnological applications. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2345056
- author
- Syverud, Kristin ; Kirsebom, Harald LU ; Hajizadeh, Solmaz LU and Chinga-Carrasco, Gary
- organization
- publishing date
- 2011
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- cellulose nanofibrils, MFC, cryogelation, cross-linking
- in
- Nanoscale Research Letters
- volume
- 6
- publisher
- Springer
- external identifiers
-
- wos:000299160200001
- scopus:84856055076
- ISSN
- 1931-7573
- DOI
- 10.1186/1556-276X-6-626
- language
- English
- LU publication?
- yes
- id
- e5af34a4-e54b-4d24-a6e3-ab0ea411d1eb (old id 2345056)
- date added to LUP
- 2016-04-01 10:47:05
- date last changed
- 2022-04-28 01:23:23
@article{e5af34a4-e54b-4d24-a6e3-ab0ea411d1eb, abstract = {{Cellulose nanofibrils were produced from P. radiata kraft pulp fibers. The nanofibrillation was facilitated by applying 2,2,6,6-tetramethylpiperidinyl-1-oxyl-mediated oxidation as pretreatment. The oxidized nanofibrils were cross-linked with polyethyleneimine and poly N-isopropylacrylamide-co-allylamine-co-methylenebisacrylamide particles and were frozen to form cryo-structured gels. Samples of the gels were critical-point dried, and the corresponding structures were assessed with scanning electron microscopy. It appears that the aldehyde groups in the oxidized nanofibrils are suitable reaction sites for cross-linking. The cryo-structured materials were spongy, elastic, and thus capable of regaining their shape after a given pressure was released, indicating a successful cross-linking. These novel types of gels are considered potential candidates in biomedical and biotechnological applications.}}, author = {{Syverud, Kristin and Kirsebom, Harald and Hajizadeh, Solmaz and Chinga-Carrasco, Gary}}, issn = {{1931-7573}}, keywords = {{cellulose nanofibrils; MFC; cryogelation; cross-linking}}, language = {{eng}}, publisher = {{Springer}}, series = {{Nanoscale Research Letters}}, title = {{Cross-linking cellulose nanofibrils for potential elastic cryo-structured gels}}, url = {{http://dx.doi.org/10.1186/1556-276X-6-626}}, doi = {{10.1186/1556-276X-6-626}}, volume = {{6}}, year = {{2011}}, }