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Cross-linking cellulose nanofibrils for potential elastic cryo-structured gels

Syverud, Kristin; Kirsebom, Harald LU ; Hajizadeh, Solmaz LU and Chinga-Carrasco, Gary (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)
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author
organization
publishing date
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
2012-02-24 13:25:04
date last changed
2017-07-02 03:18:35
@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},
  keyword      = {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},
  volume       = {6},
  year         = {2011},
}