Polydopamine-treated hierarchical cellulosic fibers as versatile reinforcement of polybutylene succinate biocomposites for electromagnetic shielding

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2022-02-01
Major/Subject
Mcode
Degree programme
Language
en
Pages
11
Series
Carbohydrate Polymers, Volume 277
Abstract
There is a need for scalable technologies to reduce electromagnetic pollution with materials of low density and low carbon footprint. Unfortunately, environmental adaptability, economic feasibility and lightweight are factors that are still far from optimal in most electromagnetic shielding materials. Herein, we address these challenges with polybutylene succinate (PBS) reinforced with bamboo fibers functionalized with Fe3O4 nanoparticles (Fe3O4-NPs) and polypyrrole (PPy). Such hybrid system was compatibilized via polydopamine (PDA) coupling, demonstrating magnetic, dielectric and interfacial polarization losses as well as distributed reflection, yielding a shielding effectiveness of ~36.9 dB. Simultaneously, the composite displayed gains in tensile strength and modulus (by 18 and 38%, respectively) combined with improved flexural strength and modulus (by 33% and 15%, respectively). Overall, this work demonstrates a new pathway toward low cost and lightweight bio-based materials for high-performance electromagnetic shielding.
Description
| openaire: EC/H2020/788489/EU//BioELCell Funding Information: The financial support for this work was provided by the National Natural Science Foundation of China ( 32171707 ) and Beijing Natural Science Foundation ( 6202024 ). Orlando J. Rojas and Gonghua Hong acknowledge funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program (ERC Advanced Grant Agreement No. 788489 , “BioElCell”). Orlando J. Rojas is grateful to the Canada Excellence Research Chair initiative and the Canada Foundation for Innovation (CFI). Gonghua Hong is grateful to the funding from China Scholarship Council (CSC). Publisher Copyright: © 2021
Keywords
Absorption-type electromagnetic shielding, Biocomposites, Cellulosic fibers, Polydopamine coupling, Surface functionalization
Other note
Citation
Hong, G, Cheng, H, Zhang, S & Rojas, O J 2022, ' Polydopamine-treated hierarchical cellulosic fibers as versatile reinforcement of polybutylene succinate biocomposites for electromagnetic shielding ', Carbohydrate Polymers, vol. 277, 118818 . https://doi.org/10.1016/j.carbpol.2021.118818