Thermo‐responsive dielectric pulse in poly(vinylidene fluoride)/polyethylene glycol fibrous mats

Zhou, Weijie; Gong, Yutie; Li, Hairong; Huang, Jing; Liu, Qiongxin; Wang, Wei; Qu, Xiaoyuan; Jiang, Ming; Sun, Jiuxiao

doi:10.1002/pen.26135

Cited by 4 publications

(2 citation statements)

References 38 publications

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“…Meanwhile, a versatile range of studies have been conducted on SMP and nanoarchitectures recently with versatile enhanced properties for multifunctional applications. [ 98–180 ]…”

Section: Discussionmentioning

confidence: 99%

Multifunctional properties optimization and stimuli‐responsivity of shape memory polymeric nanoarchitectures and applications

Idumah

2023

Polymer Engineering & Sci

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As a result of nanotechnological advancement, parameters inducing flaws in shape memory polymers (SMP), such as weak mechanical properties, low electrical, and thermal conductivities, and so on, were mitigated through the inclusion of a versatile range of nanomaterials such as montmorillonites, carbon nanotubes, graphene and derivatives, cellulose nanocrystals, carbon nanofibers, and so on, thereby forming shape memory polymeric nanoarchitectures (SMPNs). Hence, this work elucidates most recently emerging advancements on multifunctional SMPNs filled by differing nanoparticulates. Varying multifunctional SMPNs exhibit responsivity to varying forms of stimulation strategies, including thermal responsivity, electroactivated, alternating magnetic field responsivity, light sensitivity, and water induced SMPs. Therefore, this article presents very recently emerging advancements in the construction, characterization, properties, and multifunctional applications of stimuliresponsive SMPNs, with special emphasis on functional and stimuli-responsive SMPNs. Furthermore, important functions of SMPNs such as stimuli-memory effect and self-mending abilities, as well as prospective strategies for future progress of these materials are highlighted.

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“…Meanwhile, a versatile range of studies have been conducted on SMP and nanoarchitectures recently with versatile enhanced properties for multifunctional applications. [ 98–180 ]…”

Section: Discussionmentioning

confidence: 99%

Multifunctional properties optimization and stimuli‐responsivity of shape memory polymeric nanoarchitectures and applications

Idumah

2023

Polymer Engineering & Sci

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“…The absorption peak at 1175 cm À1 represents the stretching vibrations of C F. The series of absorption peaks at 3400 cm À1 (broadband, the stretching vibration of the O H group), 2867 cm À1 (stretching vibration of C H), and 1106 cm À1 (stretching vibration of C O) are assigned to the typical characteristic bands of PEG, which are observed in the infrared spectra of all fibrous films. [24][25][26] Combining SEM, TEM, and FTIR, it can be demonstrated that PEG-PVDF coaxial nanofiber films are successfully prepared under different processing conditions.…”

Section: Morphology and Structurementioning

confidence: 99%

Simple regulation of dielectric pulsing properties of polyethylene glycol‐poly(vinylidene fluoride) coaxial nanofiber films based on blow‐spinning process

Li,

Gong,

et al. 2023

Polymer Engineering & Sci

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Understanding the relationship between the fabrication process and the dielectric behavior of thermo‐responsive dielectric materials and accordingly optimizing the dielectric response behavior through simple regulation is critical to advancing their practical applications. For this purpose, we systematically analyze and demonstrate the effects of blow‐spinning process parameters, the feed rate and airflow pressure, on the orientation of poly(vinylidene fluoride) (PVDF) chains, the individual phase fractions of PVDF, the structure of the core‐sheath nanofibers, the mechanical properties, and the dielectric pulsing properties in polyethylene glycol (PEG)‐PVDF core‐sheath fiber films, and achieve the goal of effectively regulating the thermo‐responsive dielectric behavior. In particular, by increasing the airflow pressure, the polar phase fraction of the PVDF can be effectively increased, thus strengthening the dielectric pulsing effect. The significant influence of the processing parameters on the nanofiber structure also allows us to tailor the strength and toughness of the nanofiber films over a wide range by adjusting the feed rate and airflow pressure. Our work shows that the regulation of feed rate and airflow pressure can be used as an effective strategy to optimize the dielectric pulsing and mechanical properties of PEG‐PVDF films, enabling a simple and low‐cost performance optimization of thermo‐responsive dielectric materials.Highlights Effective regulation of thermal dielectric behavior by tuning process parameters. Simple tuning of mechanical properties of nanofiber films over a wide range. High ratio of β‐ and γ‐phases of PVDF by solution blow spinning. Major polar phases contribute to improved mechanical and dielectric properties.

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Relaxation‐Induced Significant Room‐Temperature Dielectric Pulsing Effects

Gong

et al. 2023

Adv Funct Materials

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Thermo‐responsive dielectric materials are in urgent demand owing to the rapid development of smart electronic/electrical systems. Although different types and structures of thermally responsive dielectric materials have been continuously reported, their dielectric response behaviors all originate from thermodynamic phase transitions. Herein, it is demonstrated that structural relaxation in poly(vinylidene fluoride) (PVDF), a non‐thermodynamic phase transition, can induce a significant thermal dielectric pulse at room temperature. The dielectric pulse strength of up to 6.3 × 105 at 20 Hz, with a dielectric pulsing temperature of 24 °C, is achieved from polyethylene glycol (PEG)‐PVDF coaxial nanofibrous films (PVDF@PEG), fabricated via a continuous blow spinning method. Moreover, the films exhibit excellent flexibility, adjustable strength and toughness, switchable hydrophilicity/hydrophobicity, and effective thermal management capability. The relaxation‐induced dielectric pulsing effect, outstanding multifunctionality, and simple preparation combine to promote further scalability and prospects of PVDF@PEG. In particular, the work contributes to the discovery of the relaxation‐induced dielectric response mechanism, which provides a new strategy for the generation of thermo‐responsive dielectric materials.

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Thermo‐responsive dielectric pulse in poly(vinylidene fluoride)/polyethylene glycol fibrous mats

Cited by 4 publications

References 38 publications

Multifunctional properties optimization and stimuli‐responsivity of shape memory polymeric nanoarchitectures and applications

Multifunctional properties optimization and stimuli‐responsivity of shape memory polymeric nanoarchitectures and applications

Simple regulation of dielectric pulsing properties of polyethylene glycol‐poly(vinylidene fluoride) coaxial nanofiber films based on blow‐spinning process

Relaxation‐Induced Significant Room‐Temperature Dielectric Pulsing Effects

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