Chinya, Ipsita and Sen, Shrabanee (2017) Improved dielectric and touch sensing performance of surface modified zinc ferrite (ZF)/Polyvinylidene fluoride (PVDF) composite. Sensors and Actuators A-Physical, 267. pp. 301-309. ISSN 0924-4247

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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 mu Wcm(-3) under repeated single finger touch. (c) 2017 Elsevier B.V. All rights reserved.

Item Type: Article
Subjects: Engineering Materials
Divisions: Sensor and Actuator
Depositing User: Bidhan Chaudhuri
Date Deposited: 23 Jan 2018 07:12
Last Modified: 23 Jan 2018 07:12

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