Abstract Microencapsulated methyl laurate-based phase change materials (MEPCMs) with polyurethane shell materials was synthesized through Pickering emulsion polymerization. The synthesized MEPCMs showed core-shell structure, optically transparency and smooth surface. Moreover, the shell thickness was roughly uniform with 8∼10 μm and the size of MEPCMs was mainly distributed in the range of 150∼350 μm. And the thermal results indicated that the obtained MEPCMs exhibit excellent thermal reliability, high latent heat storage capacity and superior thermal cycling stability. The melting and freezing enthalpies of MEPCMs were as high as 147.71 J/g and 143.36 J/g, respectively, accompanied with 83.34 % of encapsulation efficiency. Furthermore, we also detected the chemical structure of MEPCMs before and after experiencing heating-cooling cycles test, indicating that these MEPCMs showed good chemical stability. Additionally, the obtained MEPCMs showed good storage stability. Our study demonstrated that Pickering emulsion polymerization could be applied to fabricate MEPCMs with PU shell materials.

中文翻译：

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在 Pickering 乳液中通过界面聚合合成和表征具有聚氨酯壳材料的微囊化月桂酸甲酯

摘要 通过Pickering乳液聚合合成了聚氨酯壳材料的微囊化月桂酸甲酯基相变材料(MEPCMs)。合成的 MEPCM 具有核壳结构、光学透明性和光滑表面。此外，壳厚度大致均匀，为 8~10 μm，MEPCMs 的尺寸主要分布在 150~350 μm 范围内。热结果表明，所获得的 MEPCM 具有优异的热可靠性、高潜热储存能力和优异的热循环稳定性。MEPCMs 的熔化焓和冷冻焓分别高达 147.71 J/g 和 143.36 J/g，封装效率为 83.34%。此外，我们还检测了经过加热-冷却循环测试前后的 MEPCMs 的化学结构，表明这些 MEPCM 显示出良好的化学稳定性。此外，获得的 MEPCM 显示出良好的储存稳定性。我们的研究表明，Pickering 乳液聚合可用于制造具有 PU 壳材料的 MEPCM。