Document Type
Article
Publication Date
10-17-2022
School
Polymer Science and Engineering
Abstract
Polymer-based composite films with multiple properties, such as low dielectric loss tangent, high dielectric constant, and low cost are promising materials in the area of electronics and electric industries. In this study, flexible dielectric films were fabricated via an electric field-assisted method. Polyaniline (PANI) was modified by polyvinylpyrrolidone (PVP) to form a core–shell structure to serve as functional particles and silicone rubber polydimethylsiloxane (PDMS) served as the matrix. The dielectric constant of the composites prepared under electric fields was improved by the micro-structures formed by external electric fields. With the addition of 2.5 wt% PVP@PANI, the dielectric constant could be significantly enhanced, up to 23; the dielectric loss tangent is only 1, which is lower than that of the aligned PANI samples. This new processing technology provides important insights for aligning fillers in polymer matrix to form composites with enhanced dielectric properties.
Publication Title
Polymers
Volume
14
Issue
20
Recommended Citation
Wei, H.,
Yuan, Y.,
Ren, T.,
Zhou, L.,
Liu, X.,
Saeed, H. A.,
Jin, P.,
Chen, Y.
(2022). High-Dielectric PVP@PANI/PDMS Composites Fabricated via an Electric Field-Assisted Approach. Polymers, 14(20).
Available at: https://aquila.usm.edu/fac_pubs/20523