• français
    • English
    français
  • Login
Help
View Item 
  •   Home
  • Laboratoire Procédés et Ingénierie en Mécanique et Matériaux (PIMM)
  • View Item
  • Home
  • Laboratoire Procédés et Ingénierie en Mécanique et Matériaux (PIMM)
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Thermal behavior of poly(VDF-ter-TrFE-ter-CTFE) copolymers: Influence of CTFE termonomer on the crystal-crystal transitions

Article dans une revue avec comité de lecture
Author
BARGAIN, François
THUAU, Damien
24472 Laboratoire de l'intégration, du matériau au système [IMS]
247140 Laboratoire de Chimie des Polymères Organiques [LCPO]
300387 École Nationale Supérieure de Chimie et de Physique de Bordeaux (ENSCPB)
PANINE, Pierre
148619 xenocs
HADZIIOANNOU, Georges
247140 Laboratoire de Chimie des Polymères Organiques [LCPO]
300387 École Nationale Supérieure de Chimie et de Physique de Bordeaux (ENSCPB)
DOMINGUES DOS SANTOS, Fabrice
TENCE-GIRAULT, Sylvie
2073 Laboratoire Matière Molle et Chimie [MMC]
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]

URI
http://hdl.handle.net/10985/14645
DOI
10.1016/j.polymer.2018.11.064
Date
2019
Journal
Polymer

Abstract

Depending on their CTFE content (from 0 to 10 mol %), poly (VDF-ter-TrFE-ter-CTFE), poly(vinylidene fluoride-ter-trifluoroethylene-ter-chlorotrifluoroethylene) copolymers exhibit ferroelectric (FE) or relaxor ferroelectric (RFE) properties at low temperature whereas they all present paraelectric (PE) behavior at high temperature. This thermal evolution of their electro-active properties is related to reversible crystal-crystal transitions. We studied these structural transitions for three different copolymers with various amount of CTFE (0, 4.4 and 9.7 mol %) using simultaneous SAXS-WAXS experiments along thermal cycles. We identified two types of crystalline phase at low temperature with their proper crystal-crystal transition: the first one containing all-trans conformations (orthorhombic FE phase) has a discontinuous transition towards the hexagonal PE phase, the second one which incorporates gauche disordered conformations (orthorhombic DFE (Defective Ferroelectric) or RFE) transits continuously towards the same hexagonal PE phase. For the intermediate composition (4.4 mol % CTFE), we observe the coexistence of these two simultaneous phase transitions, one discontinuous (FE to PE) and one continuous (RFE to PE), whereas only the continuous one exists in the higher CTFE composition (9.7 mol %). Relaxor ferroelectric properties are precisely observed in the temperature range of the structural RFE to PE transition [0 °C, 40 °C], highlighting the importance of this crystal-crystal transition. By coupling electric displacement−electric field (D−E) loop measurements, thermo-mechanical experiments (DSC and DMA) and dielectric spectroscopy, we propose a model to explain this RFE-PE continuous crystal-crystal transition in terpolymers.

Files in this item

Name:
PIMM-P-BARGAIN-2019.pdf
Size:
3.261Mb
Format:
PDF
Embargoed until:
2019-05-31
View/Open

Collections

  • Laboratoire Procédés et Ingénierie en Mécanique et Matériaux (PIMM)

Related items

Showing items related by title, author, creator and subject.

  • Crystal-Crystal transitions in poly(VDF-ter-TrFE-ter-CTFE): Influence of CTFE termonomers 
    Communication sans acte
    BARGAIN, François; ccTHUAU, Damien; PANINE, Pierre; ccHADZIIOANNOU, Georges; DOMINGUES DOS SANTOS, Fabrice; ccTENCÉ-GIRAULT, Sylvie (2019-06)
    The increasing industrial interest for printed organic electronics these last years has led to the development of VDF-based electroactive polymers for numerous energy-related applications (sensors, actuators, capacitors) ...
  • High and Temperature-Independent Dielectric Constant Dielectrics from PVDF-Based Terpolymer and Copolymer Blends 
    Article dans une revue avec comité de lecture
    THUAU, Damien; KALLITSIS, Konstantinos; HA, Sara; BARGAIN, François; SOULESTIN, Thibaut; PÉCASTAINGS, Gilles; TENCÉ-GIRAULT, Sylvie; DOMINGUES-DOS SANTOS, Fabrice; HADZIIOANNOU, Georges (Wiley, 2020)
    Relaxor ferroelectric polymers exhibit high k at their structural phase transition around room temperature. They are particularly attractive as gate dielectric in organic field effect transistor (OFET). Nevertheless, their ...
  • Phase diagram of poly(VDF-ter-TrFE-ter-CTFE) copolymers: Relationship between crystalline structure and material properties 
    Article dans une revue avec comité de lecture
    BARGAIN, François; THUAU, Damien; HADZIIOANNOU, Georges; DOMINGUES DOS SANTOS, Fabrice; TENCÉ-GIRAULT, Sylvie (Elsevier, 2021)
    Depending on their CTFE content (from 0 to 10 mol %), poly(VDF-ter-TrFE-ter-CTFE), poly(vinylidene fluoride-ter-trifluoroethylene-ter-chlorotrifluoroethylene) copolymers, exhibit ferroelectric (FE) or relaxor ferroelectric ...
  • Unraveling the morphological diversity of P(VDF-ter-TrFE-ter-CTFE) semi-crystalline terpolymers via combined AFM and SAXS experiments 
    Article dans une revue avec comité de lecture
    ZANCHI, Sara; ENGEL, Marie; ccPASCAUD, Antoine; BARGAIN, François; LEBRETON, Sylvie; DOMINGUE DOS SANTOS, Fabrice; ccROLAND, Sébastien; ccTENCE-GIRAULT, Sylvie (Elsevier BV, 2023-03)
    In this article, the diverse morphologies observed after annealing or crystallization from the melt in P(VDF-ter-TrFE-ter-CTFE) terpolymers with varying CTFE amounts were explained through a combination of AFM and SAXS ...
  • Introducing Functionality to Fluorinated Electroactive Polymers 
    Article dans une revue avec comité de lecture
    KALLITSIS, Konstantinos; SOULESTIN, Thibaut; TENCÉ-GIRAULT, Sylvie; BROCHON, Cyril; CLOUTET, Éric; DOMINGUES-DOS SANTOS, Fabrice; HADZIIOANNOU, Georges (American Chemical Society, 2019)
    Fluorinated electroactive polymers (FEPs) are among the most interesting insulating materials for the production of organic electronic devices. Their ability to tune their response to an applied electric field makes them ...

Browse

All SAMCommunities & CollectionsAuthorsIssue DateCenter / InstitutionThis CollectionAuthorsIssue DateCenter / Institution

Newsletter

Latest newsletterPrevious newsletters

Statistics

Most Popular ItemsStatistics by CountryMost Popular Authors

ÉCOLE NATIONALE SUPERIEURE D'ARTS ET METIERS

  • Contact
  • Mentions légales

ÉCOLE NATIONALE SUPERIEURE D'ARTS ET METIERS

  • Contact
  • Mentions légales