Affiliation of Author(s):材料科学与技术学院

Journal:MATERIALS LETTERS

Key Words:Poly(vinylidene fluoride) Core-shell nanofiller Dielectric capacitor Polymeric composites Electrical properties

Abstract:Iron powder (IP) was modified by silane coupling agent to form coupling agent funtionalized iron powder (CIP). Then surfactant polyvinylpyrrolidone was adsorbed onto the surface of CIP. Finally, the aniline was polymerized onto CIP surface. Polyaniline (PANI) shell was formed on metal iron surface and it was verified by transmission electron microscopy (TEM) characterization. The PANI-CIP core-shell nanoparticles were used as fillers within poly(vinylidene difluoride) (PVDF) to prepare the (PANI-CIP)-PVDF dielectric composites. The dielectric constant of (PANI-CIP)-PVDF was obviously larger than that of IP-PVDF composite. 20%-(PANI-CIP)-PVDF showed high dielectric constant of 72.35 at 0.1 Hz, which was almost 3.5 times larger than that of 20%- IP-PVDF. (C) 2017 Elsevier B.V. All rights reserved.

ISSN No.:0167-577X

Translation or Not:no

Date of Publication:2018-01-01

Co-author:Liu, Bo

Correspondence Author:chentian