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 

机构地区：[1]School of Engineering and Built Environment,Edinburgh Napier University,Edinburgh,UK [2]Lee Kong Chian Faculty of Engineering and Science,Universiti Tunku Abdul Rahman Kajang,Malaysia [3]Bristol Composites Institute,School of Civil,Aerospace and Mechanical Engineering University of Bristol,University Walk,Bristol,BS81TR,UK [4]School of Engineering and Materials Science,Queen Mary University of London,London,UK [5]Petru Poni Institute of Macromolecular Chemistry of the Romanian Academy,Iasi,Romania

出　　处：《Journal of Advanced Dielectrics》2023年第1期57-65,共9页先进电介质学报（英文）

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。

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 era.In 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 matrix.CNF 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 dishes.Nanocellulose 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)analysis.When preparing the nanocomposite samples,various amount of alum sludge was added to examine their impact on the mechanical,thermal and electrical properties.Results 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.

关 键 词：NANOCELLULOSE BIODEGRADABLE sustainable alum sludge NANOCOMPOSITE FLEXIBLE dielectric 

分 类 号：TB33[一般工业技术—材料科学与工程]