Facile fabrication of polystyrene particles/graphene composites for improved dielectric and thermal properties

Autor: Wei Deng, Guoan Li, Wanyu Li, Meng Yang, Weiwei Cui
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Designed Monomers and Polymers, Vol 26, Iss 1, Pp 23-30 (2023)
Druh dokumentu: article
ISSN: 1385-772X
1568-5551
15685551
DOI: 10.1080/15685551.2022.2162282
Popis: In this paper, polystyrene (PS)-based reduced graphene oxide (rGO) composites were prepared by mixing PS latex particles with graphene oxide (GO) and the following in-situ reduction. The structure and morphology of PS/rGO composites were characterized, and the effects of rGO content on the dielectric properties as well as thermal stability of PS/rGO composites were investigated. Results showed that rGO sheets armoured on the surface of PS particles and exhibited well dispersion in the PS matrix after hot compression. The introduction of rGO improved the dielectric properties of the composites remarkably. When rGO content was 0.12 vol%, the dielectric permittivity and breakdown strength of PS/rGO arrived at 6.3 at102 Hz and 107 kV/mm, with 50% and 35.4% enhancement compared to the pristine PS. Furthermore, PS/rGO presented better thermal stability than the pristine PS, but the overlapping of rGO sheets in PS matrix induced the instability of dielectric loss with frequency.
Databáze: Directory of Open Access Journals
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