Skip to main content

Advertisement

Log in

Effect of micro- and nanofibrillated cellulose on the phase stability of sodium sulfate decahydrate based phase change material

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

Abstract

Fibrillated cellulose can be used as a gelation agent to thicken and improve phase stability of sodium sulfate decahydrate (SSD, Na2SO4·10H2O), a promising salt hydrate for storing thermal energy. It is expected that dissolved SSD influences the thickening action by changing the colloid interactions between the cellulose fibrils. The fibrillation degree and surface charge of the cellulose are hypothesized to control the thickening effect. Phase stability of dissolved SSD was evaluated by sedimentation. Viscoelastic behaviors were characterized to understand microstructural and thickening mechanism created by fibrillated cellulose. Effect of fibrillated cellulose on heat release of SSD was measured during phase change. Dissolved SSD reduced the electrostatic repulsion between the cellulose fibrils by compressing the electric double layer due to charge screening. This resulted in denser aggregates for the mechanically fibrillated cellulose, assisted by increased attraction force. Viscosity and storage modulus of SSD increased and stable phase was formed without sedimentation. Higher fibrillation degree of the mechanically produced cellulose eliminated phase separation due to the increased specific surface area. The phase stabilization of SSD resulted in higher and longer heat release caused by bonding between water and anhydrous sodium sulfate.

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
Fig. 6
Fig. 7

Similar content being viewed by others

References

Download references

Acknowledgments

This research was supported by a National Research Foundation of Korea (NRF) Grant funded by the Korean government (NRF-2019R1C1C1003126).

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Kyudeok Oh.

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.

The rheological properties of the fibrillated cellulose suspensions (DOCX 141 kb)

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Oh, K., Kwon, S., Xu, W. et al. Effect of micro- and nanofibrillated cellulose on the phase stability of sodium sulfate decahydrate based phase change material. Cellulose 27, 5003–5016 (2020). https://doi.org/10.1007/s10570-020-03121-w

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10570-020-03121-w

Keywords

Navigation