溶剂蒸发法制备硬脂酸十二烷基酯相变微胶囊及性能OA
Preparation of Dodecyl Stearate Phase Change Microcapsules by Solvent Evaporation Method and Its Properties
采用溶剂蒸发法制备了以硬脂酸十二烷基酯(DS)为核的微胶囊化相变材料,研究了不同种类的聚合物壁材、芯壁比等对微胶囊性能的影响.利用光学显微镜、扫描电镜(SEM)、红外光谱(FT-IR)、差式扫描量热仪(DSC)和热重分析仪(TG)对微胶囊的外观形貌、化学组成、相变特性和热稳定性进行表征.结果表明,采用聚砜(PSF)为壁材、芯壁比为 2∶1时,制得的微胶囊整体性能最好,熔融焓和包覆效率分别为 118.80 J/g和 61.52%,热失重 5%时的温度高达261℃;经过100次加热-冷却循环后,相变微胶囊的熔融焓保持在初始值的95%以上.
Microencapsulated phase change materials with dodecyl stearate(DS)as the core were prepared via solvent evaporation.The effects of encapsulation parameters on the properties of microcapsules were studied,including the kinds of polymer shell material and the mass ratio of core material to shell material.The surface morphology,chemical composition,phase transition characteristics,and thermal stability of microcapsules were characterized by optical microscopy,scanning electron microscopy(SEM),infrared spectroscopy(FT-IR),differential scanning calorimetry(DSC),and thermogravimetric analyzer(TG).The experimental results showed that when polysulfone(PSF)was used as the shell material and the core-shell ratio was 2∶1,the overall performance of the microcapsules was the best.The melting enthalpy and encapsulation efficiency were 118.80 J/g and 61.52%,respectively.When the heat loss weight was 5%,the temperature was as high as 261℃.After 100 heating-cooling cycles,the melting enthalpy of the phase change microcapsule was maintained by over 95%.
汪海平;周瑞彤;陈吕鑫;罗翠鸽;刘芸;张玉敏
江汉大学 光电化学材料与器件教育部重点实验室,光电材料与技术学院,湖北 武汉 430056江汉大学 光电化学材料与器件教育部重点实验室,光电材料与技术学院,湖北 武汉 430056江汉大学 光电化学材料与器件教育部重点实验室,光电材料与技术学院,湖北 武汉 430056江汉大学 光电化学材料与器件教育部重点实验室,光电材料与技术学院,湖北 武汉 430056江汉大学 光电化学材料与器件教育部重点实验室,光电材料与技术学院,湖北 武汉 430056江汉大学 光电化学材料与器件教育部重点实验室,光电材料与技术学院,湖北 武汉 430056
硬脂酸十二烷基酯相变微胶囊溶剂蒸发
dodecyl stearatephase change microcapsulesolvent evaporation
《江汉大学学报（自然科学版）》 2025 (2)
16-25,10
江汉大学校级科研项目(2021yb023)
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