Improved dielectric and touch sensing performance of surface modified zinc ferrite (ZF)/Polyvinylidene fluoride (PVDF) composite
| Autor: | Ipsita Chinya, Shrabanee Sen |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Composite number 02 engineering and technology Dielectric 010402 general chemistry 01 natural sciences chemistry.chemical_compound Ceramic Electrical and Electronic Engineering Composite material Instrumentation Nanocomposite Open-circuit voltage Metals and Alloys 021001 nanoscience & nanotechnology Condensed Matter Physics Polyvinylidene fluoride 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Tetraethyl orthosilicate Zinc ferrite chemistry visual_art visual_art.visual_art_medium 0210 nano-technology |
| Zdroj: | Sensors and Actuators A: Physical. 267:301-309 |
| ISSN: | 0924-4247 |
| DOI: | 10.1016/j.sna.2017.10.031 |
| Popis: | The continuous demand of fabricating self-powered body implantable devices have raised the development of new lead free polymer-ceramic composites. Herein, we have fabricated Zinc Ferrite (ZF)/Polyvinylidene Fluoride (PVDF) composite by simple solution casting technique. The inherent difficulty of compatibility between two phases (polymer and ceramic) for homogeneous film was addressed by addition of two different modifiers: Sodium dodecyl sulphate (SDS) and Tetraethyl orthosilicate (TEOS). Similarity in the piezo/ferro electrical properties between the externally poled unmodified nanocomposite with that of the surface modified composites were observed which were basically attributed to higher dispersion of nanoparticles in the polymer matrix and improved interfacial interaction between organic and inorganic matrix. It indicates that a self polarization effect has been induced in the surface modified composites. The mechanism for the interaction between two phases was discussed on the basis of zeta potential results and spectroscopic analysis. Further, external poled MSDS-ZF(C)-PVDF composite offered the highest energy storage density (0.25 Jcm−3), whereas poled TEOS modified ZF-PVDF composite exhibited an output open circuit voltage of 2.2 V with power density of 3.7 μWcm−3 under repeated single finger touch. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect