Polyvinylidene fluoride (PVDF) is a modern polymer material used in a wide variety of ways. Thanks to its excellent resistance to chemical or thermal degradation and low reactivity, it finds use in biology, chemistry, and electronics as well. By enriching the polymer with an easily accessible and cheap variant of graphite, it is possible to affect the ratio of crystalline phases. A correlation between the ratios of crystalline phases and different properties, like dielectric constant as well as piezo- and triboelectric properties, has been found, but the relationship between them is highly complex. These changes have been observed by a number of methods from structural, chemical and electrical points of view. Results of these methods have been documented to create a basis for further research and experimentation on the usability of this combined material in more complex structures and devices.
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http://dx.doi.org/10.3390/polym12122766 | DOI Listing |
Int J Nanomedicine
January 2025
Department of Burns and Plastic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China.
Purpose: The purpose of this study is to develop an innovative solution for chronic wounds in high-mobility areas, such as joints, where conventional treatments are hindered by passive healing mechanisms and the need for immobilization. By designing a micro-electro-Nanofiber dressing composed of piezoelectric polyvinylidene fluoride (PVDF) integrated with antimicrobial silver nanoparticles (AgNPs), this research aims to address the dual challenges of promoting effective wound healing and maintaining joint mobility.
Methods: Herein, we developed a novel micro-electro-Nanofiber dressing using electrospinning technology, incorporating polyvinylidene fluoride (PVDF) with silver nanoparticles (AgNPs).
Langmuir
January 2025
School of Chemistry and Chemical Engineering, State Key Laboratory of Polyolefins and Catalysis, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China.
Polyvinylidene fluoride (PVDF) latex nanoparticles serve as a versatile platform for surface modification due to their role as precursors in PVDF manufacturing. However, the strong chemical stability and poor compatibility of PVDF present significant challenges for effective surface modification. To address this, we developed a method that facilitates surface modification through chain entanglement.
View Article and Find Full Text PDFBiosens Bioelectron
January 2025
Institute of Biomedical Engineering, College of Medicine, Southwest Jiaotong University, Chengdu, 610031, Sichuan, PR China; Key Laboratory of Advanced Technologies of Materials Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, PR China. Electronic address:
Monitoring cardiac rhythm is crucial for diagnosis of heart failure. However, the deficient sensitivity of polyvinylidene fluoride (PVDF) sensors impede their application in monitoring of cardiac rhythm due to the limited piezoelectricity. Here, doping of CoFeO and aligning fibers were jointly adopted to enhance the piezoelectricity of PVDF, attributed to the transformation of α-PVDF to β-PVDF from 51.
View Article and Find Full Text PDFRSC Adv
January 2025
School of Materials Design and Engineering, Beijing Institute of Fashion Technology Beijing China
Unidirectional moisture-conducting fabrics were prepared by electrospraying polyvinylidene fluoride (PVDF) and polyvinyl chloride (PVC) onto three green fabric substrates, namely cotton, hemp, and modal. Experiments were conducted to examine the effects of coating thickness, coating material, and substrate material on the moisture conductivity of the fabrics. The electrospraying technique was effective in forming uniform and strongly adhered PVDF and PVC coatings on the fabric substrates, and the coating thickness and material type had a significant effect on the fabric's moisture conductivity.
View Article and Find Full Text PDFSmall
January 2025
Faculty of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji, 721013, China.
Dielectric nanocomposites have garnered significant interest owing to their potential applications in energy storage. However, achieving high energy density (U) and charge/discharge efficiency (η) remains a challenge in their fabrication. In this paper, core-shell structured BaTiO@Polyvinylpyrrolidone (BT@PVP) nanoparticles are prepared, and incorporated into a semi-crystalline polyvinylidene fluoride (PVDF) matrix.
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