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Syverud K, Kirsebom H, Hajizadeh S, et al. Cross-linking cellulose nanofibrils for potential elastic cryo-structured gels. Nanoscale Res Lett. 2011;6:626doi: 10.1186/1556-276X-6-626.
Syverud, K., Kirsebom, H., Hajizadeh, S., & Chinga-Carrasco, G. (2011). Cross-linking cellulose nanofibrils for potential elastic cryo-structured gels. Nanoscale research letters, 6626. https://doi.org/10.1186/1556-276X-6-626
Syverud, Kristin, et al. "Cross-linking cellulose nanofibrils for potential elastic cryo-structured gels." Nanoscale research letters vol. 6 (2011): 626. doi: https://doi.org/10.1186/1556-276X-6-626
Syverud K, Kirsebom H, Hajizadeh S, Chinga-Carrasco G. Cross-linking cellulose nanofibrils for potential elastic cryo-structured gels. Nanoscale Res Lett. 2011 Dec 12;6:626. doi: 10.1186/1556-276X-6-626. PMID: 22152032; PMCID: PMC3260332.
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Nanoscale Res Lett. 2011 Dec 12;6:626. doi: 10.1186/1556-276X-6-626.

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

Nanoscale research letters

Kristin Syverud, Harald Kirsebom, Solmaz Hajizadeh, Gary Chinga-Carrasco

Affiliations

  1. Paper and Fibre Research Institute (PFI), Høgskolerringen 6b, Trondheim, NO-7491, Norway. [email protected].

PMID: 22152032 PMCID: PMC3260332 DOI: 10.1186/1556-276X-6-626

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.

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