皮克林乳液
乳状液
差示扫描量热法
材料科学
热稳定性
化学工程
纤维素
相变材料
涂层
复合材料
超声
热能储存
织物
相变
工程类
物理
热力学
生物
工程物理
生态学
作者
Yi Zheng,Hale Oğuzlu,Alberto Baldelli,Yeling Zhu,Mingyao Song,Anubhav Pratap‐Singh,Feng Jiang
标识
DOI:10.1016/j.carbpol.2022.119583
摘要
Phase change materials (PCM) have been increasingly used over the past decades in applications requiring thermal energy storage or maintaining temperature uniformity, in particular in the textile industry. Organic PCM is desired in temperature control, but it suffers from thermal leaking and unstable form during phase transition. Here, cellulose nanofibrils (CNFs) were used as emulsifiers to stabilize paraffin Pickering emulsion by ultrasonication. Results indicated uniform PCM emulsion particles of 4.2 ± 2.1 μm could be obtained using 0.8 wt% CNF suspension sonicated at 100%A and 7 mins with 2:8 paraffin to CNF ratio. The CNF-stabilized paraffin emulsion showed excellent long-term stability with unchanged particle size when stored at 45 °C for 28 days. In addition, differential scanning calorimetry (DSC) results showed high thermal stability after 51 heating-cooling cycles with high latent heat of 117.6 J/g. The CNF-stabilized paraffin emulsion can be facilely spray-coated onto fabric to prepare thermal regulating textile.
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