Fatty acid eutectic mixtures and derivatives from non-edible animal fat as phase change materials
作者:Pau Gallart-Sirvent、Marc Martín、Gemma Villorbina、Mercè Balcells、Aran Solé、Camila Barrenche、Luisa F. Cabeza、Ramon Canela-Garayoa
DOI:10.1039/c7ra03845c
日期:——
The loss in melting and solidification enthalpies was below 14% in all mixtures showing a promising behavior for PCM applications. Additionally, the unsaturated fatty acids were recovered and transformed to threo-9,10-dihydroxystearic acid (DHSA) and some of their inorganic salts, which were analyzed by FT-IR (Fourier transform-infrared spectroscopy) and tested for the first time using the DSC technique
从非食用脂肪废物中制备了一组化合物,并研究了它们的热行为。通过简单而稳定的过程将脂肪水解和结晶,生成棕榈酸-硬脂酸(PA-SA)混合物。通过GC-FID(气相色谱-火焰电离检测)测定的PA-SA质量比与PCM(相变材料)的共晶混合物的相近。DSC(差示扫描量热法)结果表明,熔融和凝固温度分别在55℃和52℃左右,并且所测得的结晶馏分的潜热为180kJ·kg -1左右。。共晶混合物的热循环可靠性也在1000次熔化/冷冻循环中进行了测试。在所有混合物中,熔融和凝固焓的损失均低于14%,显示了PCM应用的良好前景。此外,还回收了不饱和脂肪酸并将其转化为苏式-9,10-二羟基硬脂酸(DHSA)及其一些无机盐,并通过FT-IR(傅里叶变换红外光谱法)进行了分析,并首次进行了测试。 DSC技术。