State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, China.
Zhongyuan University of Technology, Zhengzhou, Henan, 450007, China.
J Colloid Interface Sci. 2023 Jan;629(Pt A):478-486. doi: 10.1016/j.jcis.2022.08.132. Epub 2022 Aug 24.
Novel phase change materials composed of polyethylene glycol (PEG), cellulose nanofibers (CNFs) and carbon nanotubes (CNTs) were developed by an efficient and environment friendly strategy. The CNFs were modified and cross-linked by chitosan to form three-dimensional network structure, which provides strong support for the resulting CNF/CNT/PEG composites. The structure and properties of CNF/CNT/PEG composites were characterized using scanning electron microscopy, spectrums, and differential scanning calorimeter. They exhibit high latent heat (158.3 J/g), low heat loss (0.75%) and excellent photo-thermal conversion (energy storage efficiency 85.6%), electro-thermal conversion (energy storage efficiency 92.3%) properties. Due to their excellent performances, CNF/CNT/PEG composites have great potential to be used as thermal management materials.
采用高效环保的策略，开发了由聚乙烯醇（PEG）、纤维素纳米纤维（CNF）和碳纳米管（CNT）组成的新型相变材料。通过壳聚糖对 CNF 进行改性和交联，形成三维网络结构，为所得的 CNF/CNT/PEG 复合材料提供了有力的支撑。采用扫描电子显微镜、光谱和差示扫描量热仪对 CNF/CNT/PEG 复合材料的结构和性能进行了表征。它们表现出高潜热（158.3 J/g）、低热损失（0.75%）和优异的光热转换（储能效率 85.6%）、电热转换（储能效率 92.3%）性能。由于其优异的性能，CNF/CNT/PEG 复合材料在热管理材料方面具有巨大的应用潜力。
