Preparation and Characterization of a Novel Microencapsulation Process of Modified-Phase Change Material
Volume Title: 1
Polymer Engineering Department, Faculty of Chemical Engineering, Tarbiat Modares University, P.O.Box 14115-143, Tehran, I.R.Iran
The purpose of this study was manufacturing microencapsulated phase change material (MPCM) as the thermal energy storage material, containing paraffin wax with polyurethane (PU) shell. The microcapsules were synthesized using three stages of the PCM surface modification, the preparation of modified-paraffin wax nanoparticles via the new method, and the microencapsulation process of PCM through the interfacial polymerization. The chemical structure, morphology, and thermal properties of the modified-nanoparticles and microcapsules were characterized according to the Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM), and differential scanning calorimetry (DSC), respectively. All of the results showed that the microcapsules of the modified paraffin wax with PU shell were synthesized successfully and the melting/crystallization enthalpy of PCM into the microcapsules were measure 38/38.9 J/g, and the mean particle diameter of microcapsules were calculated from 2 to 4 .