Description:
This study aimed to develop promising poly (allyl methacrylate, AMA) based palmitic acid microencapsulation using emulsion polymerization method as thermal energy storage materials. Poly (AMA) and palmitic acid were chosen as capsule shell material and core material respectively. The obtained analyses results show that the poly (AMA) based palmitic acid microcapsules synthesized successfully with good latent heat storage capacity; 143-188 J/g. This study has aimed to evaluate the effect of core material ratio of microcapsules on the thermal, structural and chemical properties of palmitic acid microcapsules. To determine thermal performances of prepared microcapsules, mortar-based composite materials containing PA microcapsules were prepared with a ratio of 90:10 respectively and analyzed during heating and cooling via infrared methods. The analysis shows that the temperature of the mortar composite materials containing PA microcapsules was 13.9 oC lower than that of the reference composite in the 60th minute of heating. This indicates that mortar composites containing PA microcapsules were less affected by heating and cooling and can thus be recommended as promising energy storage materials for thermal management applications, especially in buildings