Molecular weight as a key for electroactive phase formation in poly(vinylidene fluoride)

Fan, Zengxuan; Schwedes, Martin; Schwaderer, Jan; Beuermann, Sabine; Fischlschweiger, Michael

doi:10.1080/21663831.2022.2036840

Cited by 5 publications

(16 citation statements)

References 42 publications

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“…The results indicate that the molecular weight distribution has a significant effect on the formation of electroactive phases and is therefore an important factor in the design of electroactive phases. [16] The electroactive properties make PVDF an important material for various applications. [16,17] In principle, PVDF can exhibit five crystallographic phases, namely 𝛼, 𝛽, 𝛾, 𝛿, and 𝜖.…”

Section: Influence Of Pvdf's Macromolecular Architecture On Polymorph...mentioning

confidence: 99%

“…[16] The electroactive properties make PVDF an important material for various applications. [16,17] In principle, PVDF can exhibit five crystallographic phases, namely 𝛼, 𝛽, 𝛾, 𝛿, and 𝜖. [17] The 𝛼-phase is a nonpolar crystallographic phase with a monoclinic lattice and a transgauche conformation (TGTG'), which can be obtained by melt crystallization or solution deposition.…”

Section: Influence Of Pvdf's Macromolecular Architecture On Polymorph...mentioning

confidence: 99%

“…As a result the polymorphous phase fractions in wt% F(𝛼) and F(𝛾), of the fractionated PVDFs are given in Figure 3, while the evaluation of the polymorphous phases has been carried out according to Ref. [16].…”

Section: Polymorphous Phase Behavior and Thermal Properties In Depend...mentioning

confidence: 99%

“…The evaluation is carried out according to Ref. [16]. It turned out that PVDF-Fr40°C shows the highest degree of crystallinity of 65.2 wt%.…”

Section: Polymorphous Phase Behavior and Thermal Properties In Depend...mentioning

confidence: 99%

“…In Ref. [16], the relationship between molecular weight distribution and thermal and caloric properties as well as the polymorphic phase behavior of PVDF is systematically investigated. The results indicate that the molecular weight distribution has a significant effect on the formation of electroactive phases and is therefore an important factor in the design of electroactive phases.…”

Section: Introductionmentioning

confidence: 99%

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Macromolecular Architecture‐Dependent Polymorphous Crystallization Behavior of PVDF in the PVDF/γ‐BL System via Thermally Induced Phase Separation

Gaßdorf,

Fan,

Schwaderer

et al. 2023

Macromol. Rapid Commun.

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This study investigates the effect of the macromolecular architecture of poly(vinylidene fluoride) (PVDF) on its thermally induced phase separation (TIPS) behavior and polymorphic crystallization in the PVDF/γ‐butyrolactone (PVDF/γ‐BL) system. Preparative PVDF fractions with specific macromolecular architecture and phase constitution are generated. The results show that PVDF's macromolecular architecture, particularly the degree of branching and regio‐defects, plays a significant role in its temperature‐dependent crystallization and resulting polymorphic phases. While regio‐defects dominate crystallization in the temperature range between 30 and 25 °C, the degree of branching becomes decisive in the 25–20 °C interval. The developed fractions of PVDF are further analyzed in terms of their molecular weight distribution, revealing that the PVDF fractions crystallized out of solution have similar molecular weight distributions with lower dispersity compared with the feed polymer. These findings are crucial for macromolecular separation and adjustment of PVDF polymorphic properties and hence for the development of tailor‐made PVDF matrix materials for composites and membranes. The findings suggest the possibility of polymorphous phase tailoring of PVDF based on macromolecular architecture due to temperature‐controlled crystallization out of solution and strongly motivate further research to reveal deeper knowledge of regio‐defect and branching influence of PVDF solution crystallization.

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Section: Influence Of Pvdf's Macromolecular Architecture On Polymorph...mentioning

confidence: 99%

Section: Influence Of Pvdf's Macromolecular Architecture On Polymorph...mentioning

confidence: 99%

Section: Polymorphous Phase Behavior and Thermal Properties In Depend...mentioning

confidence: 99%

“…The evaluation is carried out according to Ref. [16]. It turned out that PVDF-Fr40°C shows the highest degree of crystallinity of 65.2 wt%.…”

Section: Polymorphous Phase Behavior and Thermal Properties In Depend...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Macromolecular Architecture‐Dependent Polymorphous Crystallization Behavior of PVDF in the PVDF/γ‐BL System via Thermally Induced Phase Separation

Gaßdorf,

Fan,

Schwaderer

et al. 2023

Macromol. Rapid Commun.

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Comprehensive Study of Physicochemical Properties in Poly‐(Vinylidene Fluoride) Membranes Loaded with OPEFB's Lignin/ Lignosulfonate via Phase Inversion

Adi Nugroho,

Widiyanto,

Karimah

et al. 2024

ChemistrySelect

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The development of membrane technology is rapidly advancing, such as hydrophilic PVDF membranes, which provide anti‐fouling properties to the membrane. Therefore, this research innovates the development of hydrophilic PVDF membranes by incorporating lignin‐lignosulfonate fillers from OPEFBs in situ. This study successfully prepared hybrid PVDF membranes using the phase inversion method. ATR‐FTIR, XRD, and TGA/DSC analyses confirmed that the addition of 2 % filler promoted the formation of the β‐phase in PVDF, which was more dominant than with the addition of 4 % filler, especially in the PLs2 % membrane. SEM images of the membranes showed an asymmetric structure with finger‐like and sponge‐like pores. Interactive 3D surface imaging demonstrated increased pore potential peaks when lignosulfonate was added compared to lignin. The addition of 4 % filler had a hydrophilic‐hydrophobic repelling effect, increasing the porosity and water absorption of the PL4 % and PLs4 % membranes. Phase inversion membranes were relatively hydrophilic with a water contact angle of 61°, and adding filler reduced the membrane‘s contact angle by 8°. Based on the obtained results, it can be concluded that PVDF hybrid membranes with lignin and lignosulfonate fillers have significant potential for development in membrane technology applications that require hydrophilic membranes, such as wastewater treatment and seawater desalination.

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Electrical capability of 3D printed unpoled polyvinylidene fluoride (PVDF)/thermoplastic polyurethane (TPU) sensors combined with carbon black and barium titanate

Simunec

Breedon

Muhammad

et al. 2023

Additive Manufacturing

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Molecular weight as a key for electroactive phase formation in poly(vinylidene fluoride)

Cited by 5 publications

References 42 publications

Macromolecular Architecture‐Dependent Polymorphous Crystallization Behavior of PVDF in the PVDF/γ‐BL System via Thermally Induced Phase Separation

Macromolecular Architecture‐Dependent Polymorphous Crystallization Behavior of PVDF in the PVDF/γ‐BL System via Thermally Induced Phase Separation

Comprehensive Study of Physicochemical Properties in Poly‐(Vinylidene Fluoride) Membranes Loaded with OPEFB's Lignin/ Lignosulfonate via Phase Inversion

Electrical capability of 3D printed unpoled polyvinylidene fluoride (PVDF)/thermoplastic polyurethane (TPU) sensors combined with carbon black and barium titanate

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