The influence of PPVE/PMVE/CFE monomers insertion on the ferroelectric behavior of the P(VDF-TrFE)-based electroactive terpolymers

IF 4.1 2区化学 Q2 POLYMER SCIENCE

Polymer Pub Date : 2024-12-06 DOI:10.1016/j.polymer.2024.127931

Jinxiang Shi, Weimin Xia, Yutao Xu, Xiaofang Zhang, Jing Li, Xusheng Wang, Chengmin Hou, Jingjing Liu

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引用次数: 0

Abstract

The perfluoroalkyl ethylene ether (PMVE), perfluoro propoxyethylene (PPVE), and chlorofluoroethylene (CFE) (<4 mol%) as the third monomers are embed into the ferroelectric polyvinylidene-trifluoroethylene (P(VDF-TrFE)), respectively, aiming to modify the ferroelectric behaviors of the copolymers. Through calculation, we find the PPVE and PMVE molecular segments possess a large free volume but a low polarity, effective promoting the formation of all-trans β phase in the crystal region of P(VDF-TrFE), and contributing to the high maximum and remnant polarization (P_s and P_r) of related P(VDF-TrFE-PPVE) (∼6.3 and 6.8 μC·cm^-2) and P(VDF-TrFE-PMVE) (∼5.0 and 5.6 μC·cm^-2) under 200 MV·m^-1, respectively. Differently, the CFE segment provides not only a large volume but also a high polarity, resulting in the phase transition from β to α and thus, the target terpolymer P(VDF-TrFE-CFE) appears a transition from ferroelectrics to relaxor ferroelectrics, and shows a high dielectric permittivity (ε_r∼55.4) at 100Hz. This work may provide a comprehensive insight of modifying the structures of P(VDF-TrFE), offering crucial guidance for optimizing the design of this type ferroelectric materials.

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来源期刊

Polymer 化学-高分子科学

CiteScore

7.90

自引率

8.70%

发文量

959

审稿时长

32 days

期刊介绍： Polymer is an interdisciplinary journal dedicated to publishing innovative and significant advances in Polymer Physics, Chemistry and Technology. We welcome submissions on polymer hybrids, nanocomposites, characterisation and self-assembly. Polymer also publishes work on the technological application of polymers in energy and optoelectronics. The main scope is covered but not limited to the following core areas: Polymer Materials Nanocomposites and hybrid nanomaterials Polymer blends, films, fibres, networks and porous materials Physical Characterization Characterisation, modelling and simulation* of molecular and materials properties in bulk, solution, and thin films Polymer Engineering Advanced multiscale processing methods Polymer Synthesis, Modification and Self-assembly Including designer polymer architectures, mechanisms and kinetics, and supramolecular polymerization Technological Applications Polymers for energy generation and storage Polymer membranes for separation technology Polymers for opto- and microelectronics.