Flexible highly conductive films based on expanded graphite /polymer nanocomposites
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...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2023-04-01
|
| Series: | Frontiers in Nanotechnology |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fnano.2023.1135835/full |
| _version_ | 1797848192940769280 |
|---|---|
| author | Silvia V. G. Nista Andrei V. Alaferdov Yuri H. Isayama Lucia H. I. Mei Stanislav A. Moshkalev |
| author_facet | Silvia V. G. Nista Andrei V. Alaferdov Yuri H. Isayama Lucia H. I. Mei Stanislav A. Moshkalev |
| author_sort | Silvia V. G. Nista |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-04-09T18:24:33Z |
| format | Article |
| id | doaj.art-9cd9ded567b34a11aae76ce52148eed5 |
| institution | Directory Open Access Journal |
| issn | 2673-3013 |
| language | English |
| last_indexed | 2024-04-09T18:24:33Z |
| publishDate | 2023-04-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Nanotechnology |
| spelling | doaj.art-9cd9ded567b34a11aae76ce52148eed52023-04-12T05:19:07ZengFrontiers Media S.A.Frontiers in Nanotechnology2673-30132023-04-01510.3389/fnano.2023.11358351135835Flexible highly conductive films based on expanded graphite /polymer nanocompositesSilvia V. G. Nista0Andrei V. Alaferdov1Yuri H. Isayama2Lucia H. I. Mei3Stanislav A. Moshkalev4Center for Semiconductor Components and Nanotechnology (CCSNano), UNICAMP, Campinas, BrazilEldorado Research Institute, Campinas, BrazilCenter for Semiconductor Components and Nanotechnology (CCSNano), UNICAMP, Campinas, BrazilDepartment of Materials and Bioprocess Engineering (DEMBio), Faculty of Chemical Engineering, UNICAMP, Campinas, BrazilCenter for Semiconductor Components and Nanotechnology (CCSNano), UNICAMP, Campinas, BrazilHighly 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.https://www.frontiersin.org/articles/10.3389/fnano.2023.1135835/fullnanographiteexpanded graphitecompositehydroxyethylcelluloseelectrical and thermal conductivitygraphene |
| spellingShingle | Silvia V. G. Nista Andrei V. Alaferdov Yuri H. Isayama Lucia H. I. Mei Stanislav A. Moshkalev Flexible highly conductive films based on expanded graphite /polymer nanocomposites Frontiers in Nanotechnology nanographite expanded graphite composite hydroxyethylcellulose electrical and thermal conductivity graphene |
| title | Flexible highly conductive films based on expanded graphite /polymer nanocomposites |
| title_full | Flexible highly conductive films based on expanded graphite /polymer nanocomposites |
| title_fullStr | Flexible highly conductive films based on expanded graphite /polymer nanocomposites |
| title_full_unstemmed | Flexible highly conductive films based on expanded graphite /polymer nanocomposites |
| title_short | Flexible highly conductive films based on expanded graphite /polymer nanocomposites |
| title_sort | flexible highly conductive films based on expanded graphite polymer nanocomposites |
| topic | nanographite expanded graphite composite hydroxyethylcellulose electrical and thermal conductivity graphene |
| url | https://www.frontiersin.org/articles/10.3389/fnano.2023.1135835/full |
| work_keys_str_mv | AT silviavgnista flexiblehighlyconductivefilmsbasedonexpandedgraphitepolymernanocomposites AT andreivalaferdov flexiblehighlyconductivefilmsbasedonexpandedgraphitepolymernanocomposites AT yurihisayama flexiblehighlyconductivefilmsbasedonexpandedgraphitepolymernanocomposites AT luciahimei flexiblehighlyconductivefilmsbasedonexpandedgraphitepolymernanocomposites AT stanislavamoshkalev flexiblehighlyconductivefilmsbasedonexpandedgraphitepolymernanocomposites |