PVDF/BaTiO3 Composites as Dielectric Materials: Influence of Processing on Properties

被引：2

作者：

Brunengo, Elisabetta ^{[1
,3
]}

Conzatti, Lucia ^{[1
]}

Schizzi, Ilaria ^{[1
]}

Costa, Chiara ^{[2
]}

Buscaglia, Maria Teresa ^{[2
]}

Canu, Giovanna ^{[2
]}

Castellano, Maila ^{[3
]}

Buscaglia, Vincenzo ^{[2
]}

Stagnaro, Paola ^{[1
]}

机构：

[1] Natl Res Council CNR, Inst Macromol Studies ISMAC, Via Marini 6, I-16149 Genoa, Italy

[2] Natl Res Council CNR, Inst Condensed Matter Chem & Technol Energy ICMAT, Via Marini 6, I-16149 Genoa, Italy

[3] Univ Genoa, Dept Chem & Ind Chem, Via Dodecaneso 31, I-16146 Genoa, Italy

来源：

9TH INTERNATIONAL CONFERENCE ON TIMES OF POLYMERS AND COMPOSITES: FROM AEROSPACE TO NANOTECHNOLOGY | 2018年 / 1981卷

关键词：

PVDF; BaTiO3; Polymer composites; Processing; Dielectric permittivity; PHASES;

D O I：

10.1063/1.5045994

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

In this work 0-3 connectivity composites based on poly(vinylidene fluoride) (PVDF) and containing 30 vol% of BaTiO3 nanoparticles were prepared by using two different processing methods: solvent casting and melt blending. In both eases, the ensuing composite materials were compression molded to obtain sheets suitable for the subsequent characterization. In order to induce the formation of the electro-active beta polymorph of PVDF, the compression molding conditions were properly adjusted. A thorough characterization was then performed to investigate the influence of processing conditions on the dielectric properties of the composites, taking into account PVDF polymorphism and particles dispersion within the polymer matrix. Experimental evidences suggest that dielectric characteristics of the composites are strongly affected by the processing procedure; in particular, composites from melt blending with high amounts of beta phase have higher permittivity values compared to those obtained from solvent casting, probably due to a synergistic contribution of PVDF polymorphism and morphological features.

引用

页数：4

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