journal article·2019-09-23

Poly(vinylpyrrolidone)/Poly(vinylidene fluoride) as Guest/Host Polymer Blends: Understanding the Role of Compositional Transformation on Nanoscale Dielectric Behavior through a Simple Solution–Process Route

Prateek, Ritamay Bhunia, Ashish Garg, Raju Kumar Gupta

ACS Applied Energy Materials· Volume 2· Issue 9
Publisher page

Abstract

We report on the role of poly(vinylpyrrolidone) (PVP) additives in PVP/poly(vinylidene fluoride) (PVDF) polymer blends on compositional transformation dependent dielectric behavior. Our results show that the dielectric performance is controlled by spherulite growth, dipole–dipole interaction, and porosity in PVP/PVDF blends. The breakdown strength, energy density, and efficiency of polymer blends was improved through reducing the content of the α-PVDF crystalline phase. The maximum energy density of 4.6 J cm–3 at 3369 kV cm–1 was obtained which was 77% and 283% higher than those of pristine PVDF and commercially available biaxially oriented polypropylene, respectively, and was further investigated by piezoforce microscopy.
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Research context

OpenAlex topics: Dielectric materials and actuators · Advanced Sensor and Energy Harvesting Materials · High voltage insulation and dielectric phenomena

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Chemical Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India

Department of Materials Science and Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India

Center for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India

Funding

Board of Research in Nuclear Sciences · Department of Science and Technology, Ministry of Science and Technology

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