Skip to main content

Advertisement

Log in

Synthesis of cellulose nanofiber hydrogels from fique tow and Ag nanoparticles

  • Original Research
  • Published:
Cellulose Aims and scope Submit manuscript

Abstract

Composite cellulose hydrogels result from physical or chemical crosslinking processes. Unique tridimensional architectures, arising from the hydrogel components’ interactions, make these materials ideal to design function-driven structures. We follow the development of cellulose nanofiber/silver nanoparticle (Ag NP) hydrogels in aqueous media. TEMPO-oxidized cellulose nanofibers (TOCNs), extracted from fique residual biomass, acted as both capping and reducing agents for the in-situ synthesis of Ag NPs. Temperature and COONa:AgNO3 molar ratios influence hydrogel formation. Increasing temperatures (60 ºC) resulted in shorter reaction times (28 h) compared to the behavior at lower temperatures (25 ºC), which required longer reaction times (192 h). High COONa:AgNO3 molar ratios (1:3) produced stiffer and darker TOCN/Ag NP hydrogels at the expense of large cubic Ag NP clusters formation (1 µm). Conversely, lower COONa:AgNO3 molar ratios (1:1) resulted in softer hydrogels with spherical Ag NPs exhibiting diameters between 15 and 80 nm. Ag NP formation and crosslinking processes strongly depend on unreacted aldehydes on the TOCN surfaces after the TEMPO oxidation reaction. IR spectra indicated that there is a bridging bidentate interaction between COO groups and Ag+ ions. These carboxylate-metal complexes might weaken the hydrogen bond system by increasing the distance between cellulose molecules, decreasing the material’s crystallinity index, as observed in XRD analyses. TGA analyses demonstrated that Ag NPs significantly increased the TOCN/Ag NP hydrogels’ thermal stability compared to TOCN hydrogels. Rheological probing of the hydrogels elucidated the role of Ag NP distribution and loading on the elastic response to cyclical deformations, suggesting a myriad of uses for these materials, particularly in medicinal applications.

Graphic abstract

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5

Similar content being viewed by others

References

Download references

Acknowledgments

We thank Guatiguará Technology Park and the Central Research Laboratory Facility (X-ray and microscopy laboratories) at Universidad Industrial de Santander for infrastructural support. We also acknowledge a graduate fellowship from COLCIENCIAS Program No. 567/2012 and financial support from Universidad Industrial de Santander Vice-chancellor for Research Office (Grant 2316/2017). CH and JPH are grateful to the Fiber Science Laboratories - Human Ecology Building, at Cornell University for access to the rheometer and sample preparation equipment. LADS also acknowledges a traveling grant from Universidad Industrial de Santander Vice-chancellor for Research Office.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Marianny Y. Combariza.

Ethics declarations

Conflict of interest

The authors declare that they have no conflict of interest.

Additional information

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Electronic supplementary material

Below is the link to the electronic supplementary material.

Supplementary Material 1 (DOCX 849 kb)

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Ovalle-Serrano, S.A., Díaz-Serrano, L.A., Hong, C. et al. Synthesis of cellulose nanofiber hydrogels from fique tow and Ag nanoparticles. Cellulose 27, 9947–9961 (2020). https://doi.org/10.1007/s10570-020-03527-6

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10570-020-03527-6

Keywords

Navigation