Synthesis and characterization of polyacrylonitrile-grafted copolymers based on poly(vinylidene fluoride)

Synthesis and characterization of polyacrylonitrile-grafted copolymers based on poly(vinylidene fluoride)

Grafted poly(vinylidene fluoride) (PVDF)-based copolymers attract great attention due to their tunable ferroelectric and dielectric characteristics, which gives great perspectives for electronic applications. In this work, two strategies for poly-acrylonitrile-grafted PVDF-based copolymers synthesis...

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Bibliographic Details
Published in:Express polymer letters Vol. 15; no. 10; pp. 957 - 971
Main Authors: Khudyshkina, A. D., Luponosov, Yu. N., Shevchenko, V. G., Ponomarenko, S. A.
Format: Journal Article
Language:English
Published: Budapest Budapest University of Technology and Economics, Faculty of Mechanical Engineering, Department of Polymer Engineering 01-10-2021
Budapest University of Technology
Subjects:
atrp polymerization
Backbone
Chemical synthesis
Chlorotrifluoroethylene
Copolymers
Dielectric properties
Electron transfer
Energy efficiency
Ferroelectricity
Fluorides
fluoropolymer
Graft copolymers
grafted polymer
Investigations
poly(vinylidene fluoride)-based copolyme
Polyacrylonitrile
polymer synthesis, molecular engineering
Polymerization
Polymers
Polyvinylidene fluorides
Single electrons
Spectrum analysis
Temperature
Thermal stability
Vinylidene fluoride
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Summary:Grafted poly(vinylidene fluoride) (PVDF)-based copolymers attract great attention due to their tunable ferroelectric and dielectric characteristics, which gives great perspectives for electronic applications. In this work, two strategies for poly-acrylonitrile-grafted PVDF-based copolymers synthesis, namely single electron transfer radical polymerization (SET-LRP) and photoinduced Cu(II)-mediated reversible deactivation radical polymerization (RDRP) were investigated, their advantages and shortcomings are discussed. Using these methods two series of poly(vinylidene fluoride-co-chlorotrifluoroethylene)-grafted-polyacrylonitrile p(VDF-co-CTFE)-g-PAN and poly(vinylidene fluoride-co-trifluoroethylene-co-chlorotrifluoroeth-ylene)-grafted-polyacrylonitrile p(VDF-co-TrFE-co-CTFE)-g-PAN with different PAN content were prepared. Important characteristics of the grafted PVDF-based copolymers such as phase behavior, thermal stability, and dielectric properties were investigated, and impacts of the macromolecular backbone type, as well as the content of grafted PAN on these prop-erties, are discussed. It was shown that PAN incorporation leads to significant dielectric properties change since the dielectric permittivity of PAN-grafted copolymers is twice higher in comparison to the pristine copolymers. The crucial impact of PAN grafting onto PVDF-based copolymers backbone on their phase, thermal and dielectric behavior is demonstrated.
ISSN:1788-618X
1788-618X
DOI:10.3144/expresspolymlett.2021.77