不同WO3纳米填料形态对WO3- pvdf纳米复合材料压电性能的影响研究

IF 4.7 3区 材料科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC
Ankur Verma, Pritha Dutta, Nilay Awasthi, Ashutosh K. Singh* and Subash Cherumannil Karumuthil*, 
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引用次数: 0

摘要

无铅压电聚合物纳米复合材料由于其可定制和生物相容性的特性,正在成为生物医学能源应用和柔性可穿戴电子产品的有前途的材料。然而,通过有效的纳米填料集成来优化其压电性能仍然是一个挑战。虽然以往的研究已经在聚偏氟乙烯(PVDF)中探索了各种纳米材料来提高其β相含量,但纳米填料的形貌、表面电荷和晶体结构对压电性能的影响尚不清楚。此外,这些材料的长期稳定性和实用性还有待进一步研究。本研究通过开发一种自极化能量收集器和生物力学压力传感器来解决这些空白,该传感器使用PVDF作为基质,使用不同形态的三氧化钨(WO3)作为纳米填料。为了对聚合物和纳米材料之间的相互作用进行实验理解,使用了具有不同形态、晶体结构和表面电荷的相同纳米填料。在四种不同的形貌中,具有最高表面电荷和单斜晶结构的纳米花在PVDF基质上表现最好,其zeta电位为- 58.4 mV。采用系统的方法优化了PVDF的β相含量,确定了理想的纳米填料浓度,通过制造能量产生装置来增强能量的产生。将优化后的聚合物纳米复合材料封装在柔性聚二甲基硅氧烷(PDMS)包装中,制成了一个原型。在10 ~ 11 N的生物力学力作用下,样品的输出电压为107 V,在1 MΩ电阻下的最大功率密度为377.46 μW/cm2。该原型的实时应用演示为气体泄漏检测系统和无线病人监测系统,以手机为显示接口。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Investigation of the Different WO3 Nanofiller Morphology Influence on the Piezoelectric Properties of WO3-PVDF Nanocomposites for Self-Powered Biomedical Devices and Flexible Wearable Sensors

Investigation of the Different WO3 Nanofiller Morphology Influence on the Piezoelectric Properties of WO3-PVDF Nanocomposites for Self-Powered Biomedical Devices and Flexible Wearable Sensors

Lead-free piezoelectric polymer nanocomposite materials are emerging as promising materials for biomedical energy applications and flexible, wearable electronics due to their tailorable and biocompatible properties. However, optimizing their piezoelectric performance through effective nanofiller integration remains a challenge. While previous studies have explored various nanomaterials in poly(vinylidene fluoride) (PVDF) to enhance its β-phase content, the influence of nanofiller morphology, surface charge, and crystal structure on piezoelectric properties is not well understood. Moreover, the long-term stability and practical applicability of such materials require further investigation. This study addresses these gaps by developing a self-polarized energy harvester and biomechanical pressure sensors using PVDF as the matrix and tungsten trioxide (WO3) in various morphologies as nanofillers. In order to develop an experimental understanding of the interactions between polymers and nanomaterials, the same nanofiller with varying morphologies, crystal structures, and surface charges is used. Out of the four distinct morphologies, the nanoflowers with the highest surface charge and monoclinic crystal structure, which had a zeta potential of −58.4 mV, performed best with the PVDF matrix in terms of producing β-phase content. A systematic approach was adopted to optimize the β-phase content of PVDF and determine the ideal nanofiller concentration for enhanced energy generation by fabricating energy-generating devices. A prototype was fabricated with the optimized combination of a polymer nanocomposite encapsulated in flexible polydimethylsiloxane (PDMS) packaging. The fabricated prototype demonstrated an output voltage of 107 V under biomechanical force ranging from 10 to 11 N, achieving a maximum power density of 377.46 μW/cm2 at 1 MΩ resistance. The real-time applications of the prototype are demonstrated as a gas leakage detection system and a wireless patient monitoring system with a cell-phone-based interface as a display.

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来源期刊
CiteScore
7.20
自引率
4.30%
发文量
567
期刊介绍: ACS Applied Electronic Materials is an interdisciplinary journal publishing original research covering all aspects of electronic materials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials science, engineering, optics, physics, and chemistry into important applications of electronic materials. Sample research topics that span the journal's scope are inorganic, organic, ionic and polymeric materials with properties that include conducting, semiconducting, superconducting, insulating, dielectric, magnetic, optoelectronic, piezoelectric, ferroelectric and thermoelectric. Indexed/​Abstracted: Web of Science SCIE Scopus CAS INSPEC Portico
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