Vinylidene fluoride- and trifluoroethylene-containing fluorinated electroactive copolymers. How does chemistry impact properties?

Soulestin, Thibaut; Ladmiral, Vincent; Santos, Fabrice Domingues Dos; Améduri, Bruno

doi:10.1016/j.progpolymsci.2017.04.004

Cited by 172 publications

(139 citation statements)

References 256 publications

Supporting

Mentioning

130

Contrasting

Order By: Relevance

“…However, in the P(VDF-TrFE)-BT nanocomposites a negative electro-caloric effect at a temperature lower than 60 °C can be observed, which is attributed to the abnormal increase of polarization with increasing temperature. Figure 3b shows the negative electro-caloric effect of P(VDF-TrFE)-BTNW nanocomposite calculated by the thermodynamic Maxwell's equation, which is about −12.5°C, much better than any other results reported to date [10][11][12][13][14][15][16][17]. In both positive and negative ECEs reported to date, usually, the ECE temperature changes of bulk and thick-film samples [3][4][5][6][7][8][9] are much smaller than their thin-film counterparts since the electric fields applied on the thin-film samples could be 2-10 times higher [11][12][13][14][15].…”

Section: Exceptionally High Negative Eces Of Nanocomposites Containinmentioning

confidence: 68%

See 1 more Smart Citation

Exceptionally High Negative Electro-Caloric Effects of Poly(VDF–co–TrFE) Based Nanocomposites Tuned by the Geometries of Barium Titanate Nanofillers

Jiang

Zheng

et al. 2017

Polymers

View full text Add to dashboard Cite

Exceptionally high electro-caloric effects (ECEs) are observed in nanocomposites consisting of poly(vinylidene fluoride-co-trifluoroethylene) (VDF-co-TrFE) copolymer and barium titanate (BT) nanoparticles and nanowires. The poly(VDF-co-TrFE) matrix nanocomposites containing 5% volume fraction of BT nanowires are found to exhibit a negative ECE temperature change as large as 12 • C or a refrigeration effect of 8.3 J/g, which is much larger than those reported to date. The mechanisms of negative ECE and the enhanced negative ECE in the nanocomposites consisting of poly(VDF-co-TrFE) and BT nanowires are explained by the Kauzmann theory on glassy polar states and the interaction between BT nanofillers and the copolymer matrix. The effects of geometries of BT nanofillers on the negative ECEs are elucidated by P-E loop measurements, and dielectric and dynamical mechanical analyses. The nanocomposites, with their enhanced negative ECE tuned by the geometries of BT nanofillers, provide us with promising ECE refrigerants for practical application to small-sized and environmentally-friendly ECE coolers in the heat management of electronic devices.

show abstract

Section: Exceptionally High Negative Eces Of Nanocomposites Containinmentioning

confidence: 68%

“…The nanocomposite consists of poly(VDF-co-TrFE) copolymer [17] and barium titanate (BT) nanoparticles and nanowires with typical sizes smaller than 30 nm. It is found that the BT nanowires in the nanocomposites are more effective in enhancing the negative ECE of poly(VDF-co-TrFE) copolymer than the BT nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Exceptionally High Negative Electro-Caloric Effects of Poly(VDF–co–TrFE) Based Nanocomposites Tuned by the Geometries of Barium Titanate Nanofillers

Jiang

Zheng

et al. 2017

Polymers

View full text Add to dashboard Cite

show abstract

“…Thus, strategies to copolymerize commercially availablef luoroalkenes with functional monomersi ss till of growing interest as the functionb rings ac omplementary property.S ynthesis and applications of copolymers of TFE have recently been reviewed in the excellent book chapter from Thrasher's team [18] while copolymers of CTFE, [19] of VDF [20,21] (Scheme 1) (or terpolymers from VDF and trifluoroethylene, TrFE [22] )h ave also been reported.…”

Section: Thermoplasticsmentioning

confidence: 99%

“…Another innovative topicd eals with piezo-or ferroelectricm aterials. [22] Amonga ll polymers, the dielectric constant of PVDF is the highest (8) but to reach such properties, the PVDF films must be poled to shift from a to b conformation. However, poly(VDF-co-TrFE) copolymers (with ca.…”

Section: Electroactive(ferro- Pyro-and Piezoelectric) Devicesmentioning

confidence: 99%

Fluoropolymers: The Right Material for the Right Applications

Améduri

2018

Chemistry A European J

141

View full text Add to dashboard Cite

An overview on the synthesis, properties, and applications of fluoropolymers (PFs) is presented. First, a non-exhaustive summary on the homopolymers from conventional radical polymerization of fluoromonomers is proposed. FPs are interesting materials thanks to their outstanding properties such as thermal, oxidative and chemical resistances, low dissipation factor, refractive index, permittivity, and water absorptivity, as well as excellent durability and weatherability. Various strategies of synthesis are proposed, especially on recent studies on radical (co)polymerization of fluoroalkenes, just like their properties and applications ranging from coatings and energy-related materials (e.g. fuel cell membranes, components for lithium ion batteries, electroactive devices, and photovoltaics) to original fluorinated elastomers, surfactants, thermoplastic elastomers, thermostables, and optical devices.

show abstract

“…[1] Hence,itfinds uses in many high-tech applications in aerospace and aeronautical engineering,c oatings, [1d] piezo/ferroelectric devices, [2] backsheets for photovoltaic devices and functional membranes for water treatment. It exhibits remarkable properties,s uch as hydrophobic and oleophobic properties,c hemical resistance to acids and solvents,l ow dielectric constants and excellent weathering.…”

mentioning

confidence: 99%

Organometallic‐Mediated Radical Polymerization of Vinylidene Fluoride

et al. 2018

Self Cite

View full text Add to dashboard Cite

An unprecedentedl evel of controlf or ther adical polymerization of vinylidene fluoride (VDF), yielding well-definedPVDF(at leastupto14500 gmol À1 )withlow dispersity ( 1.32), wasa chievedu sing organometallic-mediatedr adical polymerization (OMRP) with an organocobalt compound as initiator. Theh ighc hain-end fidelity wasd emonstratedb ythe synthesiso fP VDF-andP VA c-containing di-and triblock copolymers.DFT calculations rationalizethe efficientreactivation of both head andtailc hain enddormant species.

show abstract

Vinylidene fluoride- and trifluoroethylene-containing fluorinated electroactive copolymers. How does chemistry impact properties?

Cited by 172 publications

References 256 publications

Exceptionally High Negative Electro-Caloric Effects of Poly(VDF–co–TrFE) Based Nanocomposites Tuned by the Geometries of Barium Titanate Nanofillers

Exceptionally High Negative Electro-Caloric Effects of Poly(VDF–co–TrFE) Based Nanocomposites Tuned by the Geometries of Barium Titanate Nanofillers

Fluoropolymers: The Right Material for the Right Applications

Organometallic‐Mediated Radical Polymerization of Vinylidene Fluoride

Contact Info

Product

Resources

About