Sustainable and Shape-Stabilized Phase Change Material Based on Polyamide 12/N,N-bis(2-Hydroxyethyl)dodecanamide via...

Area of Science:

• Materials Science
• Sustainable Energy
• Chemical Engineering

Background:

• Traditional paraffin-based phase-change materials (PCMs) rely on fossil fuels.
• Bio-based PCMs are sought for sustainable energy storage applications.
• Coconut oil derivatives offer promising alternatives.

Purpose of the Study:

• Evaluate N,N-bis(2-hydroxyethyl)dodecanamide (BHD) as a bio-based PCM.
• Develop shape-stable, non-leakage BHD-based PCMs using polyamide 12 (PA12).
• Assess the potential for sustainable thermal management solutions.

Main Methods:

• Utilized a thermally induced phase-separation (TIPS) method.
• Encapsulated BHD within PA12 scaffolds.
• Characterized thermal properties, morphology, and stability over 100 thermal cycles.

Main Results:

• BHD exhibits a high latent heat (143 J/g) and a melting point of 32-38°C.
• PA12 encapsulation yielded shape-stable BHD PCMs with retained latent heat (111 J/g).
• Materials demonstrated structural integrity over 100 cycles, with high BHD content (up to 95m%) showing recyclability.

Conclusions:

• Shape-stable, non-leakage bio-based PCMs were successfully produced using BHD and PA12.
• These materials are suitable for sustainable energy storage and thermal management.
• Addition of carbon fillers enhanced heat transfer and morphological control.