Frontiers in Nanotechnology | |
Flexible highly conductive films based on expanded graphite /polymer nanocomposites | |
Nanotechnology | |
Silvia V. G. Nista1  Yuri H. Isayama1  Stanislav A. Moshkalev1  Lucia H. I. Mei2  Andrei V. Alaferdov3  | |
[1] Center for Semiconductor Components and Nanotechnology (CCSNano), UNICAMP, Campinas, Brazil;Department of Materials and Bioprocess Engineering (DEMBio), Faculty of Chemical Engineering, UNICAMP, Campinas, Brazil;Eldorado Research Institute, Campinas, Brazil; | |
关键词: nanographite; expanded graphite; composite; hydroxyethylcellulose; electrical and thermal conductivity; graphene; | |
DOI : 10.3389/fnano.2023.1135835 | |
received in 2023-01-01, accepted in 2023-03-27, 发布年份 2023 | |
来源: Frontiers | |
【 摘 要 】
Highly electrically and thermally conducting films of expanded graphite/polymer nanocomposites were fabricated using an approach based on solution mixing methods. The use of Hydroxyethylcellulose and benzylic alcohol based solutions provides efficient dispersion and better exfoliation of multilayer graphene (nanographite) flakes that are further aligned in extended 2D layers forming continuous conductive pathways during lamination (hot calendering) process. Very high electrical conductivity (190 S/cm) was obtained for fabricated layered films. In contrast, for films produced by a conventional mixing and deposition method with acrylic copolymer and the same nanographitic material, with flakes randomly distributed within the composite, much lower conductivities (2.4 S/cm) were obtained.
【 授权许可】
Unknown
Copyright © 2023 Nista, Alaferdov, Isayama, Mei and Moshkalev.
【 预 览 】
Files | Size | Format | View |
---|---|---|---|
RO202310100443826ZK.pdf | 2574KB | download |