Amaka J. Onyianta
The Effects of morpholine pre-treated and carboxymethylated cellulose nanofibrils on the properties of alginate-based hydrogels
Onyianta, Amaka J.; Castellano, Maila; Dorris, Mark; Williams, Rhodri L.; Vicini, Silvia
Authors
Maila Castellano
Mark Dorris
Rhodri L. Williams
Silvia Vicini
Abstract
The effects of varying percentage loadings of morpholine pre-treated cellulose nanofibrils (MCNF) and carboxymethylated cellulose nanofibrils (CMCNF) on the aqueous swelling, compressive modulus and viscoelastic properties of calcium-ion-crosslinked alginate hydrogels were investigated. In addition, the pore structures of hydrogels with the highest compressive modulus were studied. The incorporation of 5 wt. % MCNF resulted in a slightly reduced aqueous swelling, a 36% increase in compressive modulus and a layered pore structure when compared with the neat alginate hydrogel. On the other hand, the addition of CMCNF at the same loading led to a slightly improved aqueous swelling, an increase in compressive modulus (17%) and high porosity. Further increases in CNF loadings did not result in significant increase in material properties. The alginate/CNF composite materials have potentials to be used in applications where good swelling and mechanical robustness are required.
Citation
Onyianta, A. J., Castellano, M., Dorris, M., Williams, R. L., & Vicini, S. (2018). The Effects of morpholine pre-treated and carboxymethylated cellulose nanofibrils on the properties of alginate-based hydrogels. Carbohydrate Polymers, 198, 320-327. https://doi.org/10.1016/j.carbpol.2018.06.084
Journal Article Type | Article |
---|---|
Acceptance Date | Jun 19, 2018 |
Online Publication Date | Jun 22, 2018 |
Publication Date | Oct 15, 2018 |
Deposit Date | Jun 28, 2018 |
Publicly Available Date | Jun 23, 2019 |
Journal | Carbohydrate Polymers |
Print ISSN | 0144-8617 |
Publisher | Elsevier |
Peer Reviewed | Peer Reviewed |
Volume | 198 |
Pages | 320-327 |
DOI | https://doi.org/10.1016/j.carbpol.2018.06.084 |
Keywords | Hydrogels; Alginates; Cellulose nanofibrils (CNF); Carboxymethylation; Surface modification; Compressive modulus |
Public URL | http://researchrepository.napier.ac.uk/Output/1234603 |
Contract Date | Jun 28, 2018 |
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