Electrospun polyvinylpyrrolidone fibers with cobalt ferrite nanoparticles

IF 3.1 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Carbon Trends Pub Date : 2025-02-05 DOI:10.1016/j.cartre.2025.100478

Vinicio J. Cevallos , Sarah Briceño , Guillermo Solorzano , Jules Gardener , Alexis Debut , Raúl Dávalos , Werner Bramer-Escamilla , Gema González

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引用次数: 0

Abstract

Polyvinylpyrrolidone (PVP) fibers with cobalt ferrite nanoparticles (CoFe₂O₄) were prepared by an electrospinning technique to study the electrical resistance and magnetic properties of the nanocomposite. The samples were characterized using Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, transmission electron microscopy (TEM), and thermogravimetric analysis (TGA). Magnetic properties were measured using vibrating sample magnetometry (VSM). PVP fibers showed an average diameter of

3.74 μ m

with a resistance of 121.58 G

Ω

and

2.22 μ m

and 1.20 G

Ω

with the incorporation of CoFe₂O₄ nanoparticles. Cobalt ferrite nanoparticles have a maximum magnetization of 81.9 emu/g, and the CoFe₂O₄/PVP fibers present a diamagnetic behavior with a maximum magnetization of 0.07 emu/g. Combining the versatility of PVP as a polymer matrix with the magnetic and electric properties of cobalt ferrite nanoparticles, this nanocomposite may open up new potential applications for developing electrically conductive novel nanomaterials and devices.

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含钴铁氧体纳米粒子的静电纺丝聚乙烯吡咯烷酮纤维

采用静电纺丝技术制备了含钴铁氧体纳米粒子（CoFe2O4）的聚乙烯吡咯烷酮（PVP）纤维，并对其电阻和磁性能进行了研究。采用傅里叶变换红外光谱（FTIR）、拉曼光谱（Raman）、透射电子显微镜（TEM）和热重分析（TGA）对样品进行了表征。用振动样品磁强计（VSM）测定其磁性能。加入CoFe2O4纳米粒子后，PVP纤维的平均直径为3.74μm，电阻分别为121.58 GΩ、2.22μm和1.20 GΩ。钴铁氧体纳米粒子的最大磁化强度为81.9 emu/g， CoFe2O4/PVP纤维的最大磁化强度为0.07 emu/g，具有抗磁性。结合PVP作为聚合物基体的多功能性和钴铁氧体纳米颗粒的磁性和电学性能，这种纳米复合材料可能为开发导电的新型纳米材料和器件开辟新的潜在应用。

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