Development and thermophysical investigation of stable fatty alcohol/SiO2 phase change material microcapsules through interfacial polycondensation

IF 2.7 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Journal of Materials Research Pub Date : 2024-08-16 DOI:10.1557/s43578-024-01417-2
Veerakumar Chinnasamy, Nayoung You, Honghyun Cho
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Abstract

Developing competent energy storage materials is crucial for efficient thermal energy storage and utilization. Microencapsulated lauryl alcohol as phase change material using SiO2 shell was prepared through a novel one-pot synthesis of interfacial polycondensation using tetraethyl orthosilicate as a shell precursor. The thermal properties were analyzed through differential scanning calorimetry, which revealed that the melting and freezing points of microcapsules were 23 °C and 18.9 °C, respectively. For melting and freezing, the estimated latent heats were 90 J g−1 and 88.2 J g−1, respectively. Thermogravimetric analysis confirms that the microcapsules are stable at a higher temperature. Besides, the leak test of the developed microcapsules was performed to investigate the stability during the melting process. Moreover, the prepared microcapsules (MPCM2) show stable and excellent thermophysical properties after 500 thermal cycles, which shows that the developed microcapsule is an ideal candidate for thermal energy storage.

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通过界面缩聚技术开发稳定的脂肪醇/二氧化硅相变材料微胶囊并进行热物理研究
开发合格的储能材料对于高效的热能储存和利用至关重要。通过一种新颖的以正硅酸四乙酯为外壳前驱体的界面缩聚一锅合成法,制备出了以二氧化硅为外壳的微胶囊月桂醇相变材料。通过差示扫描量热法分析了微胶囊的热性能,结果表明微胶囊的熔点和凝固点分别为 23 ℃ 和 18.9 ℃。在熔化和冻结时,估计潜热分别为 90 J g-1 和 88.2 J g-1。热重分析证实,微胶囊在较高温度下是稳定的。此外,还对开发的微胶囊进行了泄漏测试,以研究其在熔化过程中的稳定性。此外,所制备的微胶囊(MPCM2)在经过 500 次热循环后显示出稳定而优异的热物理性能,这表明所开发的微胶囊是热能存储的理想候选材料。
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来源期刊
Journal of Materials Research
Journal of Materials Research 工程技术-材料科学:综合
CiteScore
4.50
自引率
3.70%
发文量
362
审稿时长
2.8 months
期刊介绍: Journal of Materials Research (JMR) publishes the latest advances about the creation of new materials and materials with novel functionalities, fundamental understanding of processes that control the response of materials, and development of materials with significant performance improvements relative to state of the art materials. JMR welcomes papers that highlight novel processing techniques, the application and development of new analytical tools, and interpretation of fundamental materials science to achieve enhanced materials properties and uses. Materials research papers in the following topical areas are welcome. • Novel materials discovery • Electronic, photonic and magnetic materials • Energy Conversion and storage materials • New thermal and structural materials • Soft materials • Biomaterials and related topics • Nanoscale science and technology • Advances in materials characterization methods and techniques • Computational materials science, modeling and theory
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