采用近场电纺技术制备 Ag-NPs 掺杂 PVDF 纳米复合纤维膜的压电性能表征。

Characterization of Piezoelectric Properties of Ag-NPs Doped PVDF Nanocomposite Fibres Membrane Prepared by Near Field Electrospinning.

机构信息

Department of Mechanical and Electro-Mechanical Engineering, National Sun Yat-Sen University, Kaohsiung 80424,Taiwan | Institute of Medical Science and Technology, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan | Institute of Precision Medicine, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan.

Department of Mechanical and Electro-Mechanical Engineering, National Sun Yat-Sen University, Kaohsiung 80424,Taiwan.

出版信息

Comb Chem High Throughput Screen. 2022;25(4):720-729. doi: 10.2174/1386207324666210302100728.

DOI:10.2174/1386207324666210302100728

PMID:33653246

Abstract

BACKGROUND

In this study, Near-field electrospinning (NFES) technique is used with a cylindrical collector to fabricate a large area permanent piezoelectric micro and nanofibers by a prepared solution. NFES requires a small electric field to fabricate fibers Objective: The objective of this paper to investigate silver nanoparticle (Ag-NP)/ Polyvinylidene fluoride (PVDF) composite as the best piezoelectric material with improved properties to produced tremendously flexible and sensitive piezoelectric material with pertinent conductance Methods: In this paper, we used controllable electrospinning technique based on Near-field electrospinning (NFES). The process parameter for Ag-NP/PVDF composite electrospun fiber based on pure PVDF fiber. A PVDF solution concentration of 18 wt.% and 6 wt.% silver nitrate, which is relative to the weight of PVDF wt.% with 1058 μS conductivity fibers, have been directly written on a rotating cylindrical collector for aligned fiber PVDF/Ag-NP fibers are patterned on fabricated copper (Cu) interdigitated electrodes were implemented on a thin flexible polyethylene terephthalate (PET) substrate and Polydimethylsiloxane (PDMS) used as a package to enhance the durability of the PVDF/ Ag-NP device.

RESULTS

A notable effect on the piezoelectric response has been observed after Ag-NP addition, confirmed by XRD characterization and tapping test of Ag-NP/PVDF composite fiber. The morphology of the PVDF/Ag-NP fibers and measure diameter by scanning electron microscopy (SEM) and Optical micrograph (OM), of fiber. Finally, a diameter of PVDF/Ag-NP fibers up to ~7 μm. The high diffraction peak at 2θ = 20.5˚ was investigated by X-ray diffraction (XRD) in the piezoelectric crystal β-phase structure. Further addition of silver nanoparticles (Ag- NPs) in the PVDF solution resulted in enhancing the electromechanical conversion of the fibers from ~0.1 V to ~1 V.

CONCLUSION

In conclusion, we can say that confirmed and validated the addition of Ag-NP in PVDF could enhance the piezoelectric property by using NFES technique with improved crystalline phase content can be useful for a wide range of power and sensing applications like biomedical devices and energy harvesting, among others.

摘要

背景

在这项研究中，使用圆柱形收集器通过制备的溶液利用近场电纺技术（NFES）制造大面积的永久性压电微纳纤维。NFES 需要小电场来制造纤维。

目的

本文旨在研究银纳米粒子（Ag-NP）/聚偏二氟乙烯（PVDF）复合材料作为最佳压电材料，以提高性能，从而生产出具有极高柔韧性和灵敏度的压电材料，并具有相关电导性。

方法

在本文中，我们使用基于近场电纺（NFES）的可控电纺技术。该过程参数基于纯 PVDF 纤维的 Ag-NP/PVDF 复合纤维电纺。使用浓度为 18wt.%的 PVDF 溶液和 6wt.%的硝酸银，相对于 PVDF 的重量比为 1058μS 电导率纤维，直接写入旋转圆柱形收集器上，用于对齐纤维 PVDF/Ag-NP 纤维在制造的铜（Cu）叉指电极上进行图案化，并在薄而灵活的聚对苯二甲酸乙二醇酯（PET）基板和聚二甲基硅氧烷（PDMS）上实施，以增强 PVDF/Ag-NP 器件的耐用性。

结果

通过 X 射线衍射（XRD）表征和 Ag-NP/PVDF 复合纤维的敲击测试，观察到添加 Ag-NP 后对压电响应有明显影响。PVDF/Ag-NP 纤维的形态和通过扫描电子显微镜（SEM）和光学显微镜（OM）测量纤维直径。最后，PVDF/Ag-NP 纤维的直径达到约 7μm。在压电晶体β相结构中，通过 X 射线衍射（XRD）研究了 2θ=20.5˚处的高衍射峰。进一步在 PVDF 溶液中添加银纳米粒子（Ag-NPs）会导致纤维的机电转换从约 0.1V 增强到约 1V。