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Interfacial Engineered Cellulose-Based HIPPEs for Thermal Energy Storage and 3D Printing
Qi Dai1,2, Jiayi Lv3, Yanpeng Cheng1
1State Key Laboratory of Woody Oil Resources Utilization, Northeast Forestry University, Harbin 150040, China.
Biomacromolecules
|November 27, 2025
Summary
We developed stable phase change material-in-water high internal phase Pickering emulsions (HIPPEs) using cellulose nanofibrils and DDAB. These HIPPEs offer a versatile platform for latent-heat storage and thermal management applications.
Area of Science:
- Materials Science
- Colloid and Surface Chemistry
Background:
- Stabilizing phase change materials (PCMs) within high internal phase emulsions (HIPEs) is difficult, limiting their use in functional materials.
- Existing methods struggle with the inherent properties of PCMs, creating a need for novel stabilization strategies.
Purpose of the Study:
- To introduce a novel strategy for creating stable PCM-in-water high internal phase Pickering emulsions (HIPPEs).
- To explore the dual stabilization mechanism involving cellulose nanofibrils (CNF) and didodecyl dimethylammonium bromide (DDAB).
Main Methods:
- Utilized oppositely charged CNF and DDAB to form PCM-in-water HIPPEs.
- Investigated a dual stabilization mechanism involving interfacial complex adsorption and a continuous CNF network.
Main Results:
- Achieved stable HIPPEs for over 30 days at room temperature.
- Demonstrated suitability for diverse oils, including liquid paraffin, with up to 92% internal-phase volume.
- HIPPEs showed promise as green templates and 3D printing inks.
Conclusions:
- The CNF/DDAB complexation provides a robust dual barrier for HIPPE stabilization.
- This method expands the fabrication possibilities for programmable HIPPEs in energy storage and thermal management.
