A simple sonochemical method for fabricating poly(methyl methacrylate)/stearic acid phase change energy storage nanocapsules

作者：Wang, Guxia; Xu, Weibing^*; Hou, Qian; Guo, Shengwei

来源：Ultrasonics Sonochemistry, 2015, 27: 403-407.

DOI：10.1016/j.ultsonch.2015.06.007

• Phase change energy storage
• Nanoencapsulation
• In situ polymerization
• Sonochemistry

In this study, stearic acid suitable for thermal energy storage applications was nanoencapsulated in a poly(methyl methacrylate) shell. The nanocapsules were prepared using a simple ultrasonically initiated in situ polymerization method. The morphology and particle size of the poly(methyl methacrylate)/stearic acid phase change energy storage nanocapsules (PMS-PCESNs) were analyzed using transmission electron microscopy, scanning electron microscopy, atomic force microscopy and dynamic light scattering. The latent heat storage capacities of stearic acid and the PMS-PCESNs were determined using differential scanning calorimetry. The chemical composition of the nanocapsules was characterized using Fourier transform infrared spectroscopy. All of the results show that the PMS-PCESNs were synthesized successfully and that the latent heat storage capacity and encapsulation efficiency were 155.6 J/g and 83.0%, respectively, and the diameter of each nanocapsule was 80-90 nm.

• 出版日期2015-11
• 单位北方民族大学; 合肥工业大学