Preparation of elastomeric nanocomposites using nanocellulose and recycled alum sludge for flexible dielectric materials

作     者：Dongyang Sun Bernard L.H.Saw Amaka J.Onyianta Bowen Wang Callum Wilson Dominic O’Rourke Chan H.See Carmen-Mihaela Popescu Mark Dorris Islam Shyha Zhilun Lu 

作者机构：School of Engineering and Built EnvironmentEdinburgh Napier UniversityEdinburghUK Lee Kong Chian Faculty of Engineering and ScienceUniversiti Tunku Abdul Rahman KajangMalaysia Bristol Composites InstituteSchool of CivilAerospace and Mechanical Engineering University of BristolUniversity WalkBristolBS81TRUK School of Engineering and Materials ScienceQueen Mary University of LondonLondonUK Petru Poni Institute of Macromolecular Chemistry of the Romanian AcademyIasiRomania 

出 版 物：《Journal of Advanced Dielectrics》 (先进电介质学报（英文）)

年 卷 期：2023年第13卷第1期

页      面：57-65页

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 0817[工学-化学工程与技术] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported by a Research Environment Links Grant No.MIGHT/CEO/NUOF/1-2022(2)from the British Council and Malaysia Industry-Government Group for High Technology part of the British Council’s Going Global Partnerships program The program builds stronger,more inclusive,internationally connected higher education and TVET systems 

主　　题：Nanocellulose biodegradable sustainable alum sludge nanocomposite flexible dielectric 

摘      要：Flexible dielectric materials with environmental-friendly,low-cost and high-energy density characteristics are in increasing demand as the world steps into the new Industrial 4.0 *** this work,an elastomeric nanocomposite was developed by incor­porating two components:cellulose nanofibrils(CNFs)and recycled alum sludge,as the reinforcement phase and to improve the dielectric properties,in a bio-elastomer *** and alum sludge were produced by processing waste materials that would otherwise be disposed to landfills.A biodegradable elastomer polydimethylsiloxane was used as the matrix and the nanocompos­ites were processed by casting the materials in Petri *** extraction and heat treatment of alum sludge were con­ducted and characterized using various techniques including scanning electron microscopy(SEM),thermogravimetric analysis/derivative thermogravimetric(TGA/DTG)and X-ray diffraction(XRD)*** preparing the nanocomposite samples,various amount of alum sludge was added to examine their impact on the mechanical,thermal and electrical *** have shown that it could be a sustainable practice of reusing such wastes in preparing flexible,lightweight and miniature dielectric materials that can be used for energy storage applications.