Lawer-Yolar Gideon, Dawson-Andoh Benjamin, Atta-Obeng Emmanuel
Department of Forestry, West Virginia University, Morgantown, WV 26505, USA.
Biotechnol Rep (Amst). 2019 Jun 30;24:e00359. doi: 10.1016/j.btre.2019.e00359. eCollection 2019 Dec.
We report for the first time the evaluation of oils from the tropical forest tree, Allanblackia, shea butter and palm kernel oil as a potential phase change material for thermal energy storage based upon its thermo-physical and chemical properties. Differential Scanning Calorimetry showed that all the oils were polymorphic and hence exhibited multiple melting/freezing profile over a wide range. For both melting and freezing cycles, Allanblackia oil showed high latent heat of energy (80.53 J/g) with the highest melting point profile (34.74 °C) of all the oils. Thermo-gravimetric analysis showed that all the oil samples were thermally stable and did not degrade within the temperature of interest even though Allanblackia oil showed an increase in weight around 37 °C indicating oxidative instability. Chemical stability was confirmed by FTIR spectra. Of all the oils studied, Allanblackia exhibited a potential for use as a PCM for thermal energy storage if purified to improve oxidative stability.
我们首次报告了对热带森林树木阿兰布鲁克木油、乳木果油和棕榈仁油的评估，基于其热物理和化学性质，它们作为热能储存潜在相变材料的情况。差示扫描量热法表明，所有这些油都是多晶型的，因此在很宽的范围内呈现出多个熔化/凝固曲线。对于熔化和凝固循环，阿兰布鲁克木油显示出高能量潜热（80.53 J/g），且在所有油中具有最高的熔点曲线（34.74°C）。热重分析表明，所有油样在感兴趣的温度范围内都是热稳定的，不会降解，尽管阿兰布鲁克木油在37°C左右显示出重量增加，表明其氧化稳定性较差。傅里叶变换红外光谱证实了其化学稳定性。在所有研究的油中，如果经过纯化以提高氧化稳定性，阿兰布鲁克木油显示出作为热能储存相变材料的潜力。
