Preparation and thermal properties of ethylene glycole distearate as a novel phase change material for energy storage

作者：Alkan Cemil^*; Kaya Kemal; Sari Ahmet

来源：Materials Letters, 2008, 62(6-7): 1122-1125.

DOI：10.1016/j.matlet.2007.07.061

• stearic acid
• esterification
• ethylene glycole distearate
• phase change material
• thermal analysis

The latent heat thermal energy storage (LHTES) capacity of phase change materials (PCMs) increases with molecular weight and secondary interactions as their efficiency depends on the energy storage capacity per unit mass during its melting and freezing. In this study, ethylene glycole distearate(EGDS) as a novel PCM having high energy storage capacity (215.80 J/g) and suitablephase change temperature for LHTES was synthesized by esterification of stearic acid with ethylene glycol. The esterification reaction was proven by Fourier Transform Infrared (FT-IR) Spectroscopy. Thermal stability of the novel PCM was investigated by thermal cycling (1000 melfing/freezing cycles). Latent heats of melting and freezing of EGDS were found 215.43 J/g-216.45 J/g by Differential Scanning Calorimetry (DSC) method, respectively after thermal cycling as melting and freezing temperatures were 65.35 and 65.83 degrees C, respectively. Thermal gravimetric analysis (TGA) was used to determine endurance of EGDS.

• 出版日期2008-3-15