Encapsulation of polyethylene glycol in cellulose-based porous capsules for latent heat storage and light-to-thermal conversion

作     者：Jiangwei Li Lina Meng Jiaxuan Chen Xu Chen Yonggui Wang Zefang Xiao Haigang Wang Daxin Liang Yanjun Xie Jiangwei Li;Lina Meng;Jiaxuan Chen;Xu Chen;Yonggui Wang;Zefang Xiao;Haigang Wang;Daxin Liang;Yanjun Xie

作者机构：Key Laboratory of Bio-based Material Science and Technology(Ministry of Education)College of Material Science and EngineeringNortheast Forestry UniversityHarbin 150040China 

出 版 物：《Frontiers of Chemical Science and Engineering》 (化学科学与工程前沿（英文版）)

年 卷 期：2023年第17卷第8期

页      面：1038-1050页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：This work was supported by the National Natural Science Foundation of China(Grant Nos.31890774 and 31890770) the Fundamental Research Funds for the Central Universities(Grant No.2572018AB40) the National Training Program of Innovation and Entrepreneurship for Undergraduates of Northeast Forestry University(Grant No.202110225432) 

主　　题：cellulose polyelectrolytes phase change materials thermal energy storage light-to-thermal conversion 

摘      要：Phase change materials are potential candidates for the application of latent heat ***,we fabricated porous capsules as shape-stable materials from cellulose-based polyelectrolyte complex,which were first prepared using cellulose 6-(N-pyridinium)hexanoyl ester as the cationic polyelectrolyte and carboxymethyl cellulose as the anionic polyelectrolyte to encapsulate polyethylene glycol by the vacuum impregnation ***,the multi-walled carbon nanotube or graphene oxide,which were separately composited into the polyelectrolytes complex capsules to enhance thermal conductivity and light-to-thermal conversion *** capsules owned a typical core–shell structure,with an extremely high polyethylene glycol loading up to 34.33 g∙g^(‒1).After loading of polyethylene glycol,the resulted cellulose-based composite phase change materials exhibited high thermal energy storage ability with the latent heat up to 142.2 J∙g^(‒1),which was 98.5%of pure polyethylene *** results showed that the composite phase change materials demonstrated good form-stable property and thermal ***,studies involving light-to-thermal conversion determined that composite phase change materials exhibited outstanding light-to-thermal conversion *** their exceptional comprehensive features,innovative composite phase change materials generated from cellulose presented a highly interesting choice for thermal management and renewable thermal energy storage.