Dielectric relaxation behaviour in semi-crystalline polyvinylidene fluoride (PVDF)/TiO2 nanocomposites

被引：150

作者：

Rekik, Houda ^{[1
,2
]}

Ghallabi, Zied ^{[1
,2
]}

Royaud, Isabelle ^{[2
,3
]}

Arous, Mourad ^{[1
]}

Seytre, Gerard ^{[2
]}

Boiteux, Gisele ^{[2
]}

Kallel, Ali ^{[1
]}

机构：

[1] Fac Sci Sfax, Lab Mat Composites Ceram & Polymeres, Sfax 3018, Tunisia

[2] Univ Lyon 1, CNRS, IMP, UMR 5223, F-69622 Villeurbanne, France

[3] Univ Lorraine, Ecole Mines, Inst Jean Lamour, Dept SI2M,CNRS UMR 7198, F-54042 Nancy, France

来源：

COMPOSITES PART B-ENGINEERING | 2013年 / 45卷 / 01期

关键词：

Nano-structures; Thermal properties; Electrical properties; Thermal analysis; POLY(VINYLIDENE FLUORIDE); REORIENTATIONAL DYNAMICS; BLENDS; SPECTROSCOPY; PHASE; TIMES;

D O I：

10.1016/j.compositesb.2012.08.002

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Polymer nanocomposites based on polyvinylidene fluoride (PVDF) matrix filled with TiO2 nanoparticles (1%, 2%, 3% and 5% by v/v%) were studied by broadband dielectric spectroscopy (BDS) in order to investigate the filler effect on the molecular mobility of the polymer chains. The formalism of electric modulus was used to analyze the dielectric response, thus three relaxation processes were observed. In fact, the first one, which is around -40 degrees C at 10 Hz, is attributed to the glass transition at low temperature. As for the second phenomenon, around 30 degrees C at 10 Hz, it is related to the dipolar relaxations in the crystalline phase. Regarding the third one, around 100 degrees C at 10 Hz, it can be due to the interfacial polarization (IP). The crystallinity ratio decreases and the electric modulus of the interfacial polarization increases with the increase of the TiO2 content. (c) 2012 Elsevier Ltd. All rights reserved.

引用

页码：1199 / 1206

页数：8

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