Multifunctional polypyrrole-based flexible composite materials for next-generation smart Material: Integrated piezoresistive sensing, energy storage, electrothermal heating, and UV protection

IF 14.2 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering Pub Date : 2025-06-19 DOI:10.1016/j.compositesb.2025.112726

Xinyu Jiao , Yuanjun Liu

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引用次数: 0

Abstract

With the continuous advancement of IoT and AI technologies, smart textiles are widely used in healthcare, sports, and defense. In particular, the aging society has significantly increased the demand for intelligent wheelchairs. However, traditional wheelchair cushions with single functions can no longer meet the modern need for intelligence. To address this, this study uses in situ polymerization to combine the conductive polymer polypyrrole (PPY) with pre-oxidized PAN fiber felt (PPFF) to create a multifunctional flexible composite material (PPY/PPFF) with excellent aging resistance. The material has a low resistivity of 24.55 kΩ·cm, high sensitivity (S₁ = 14.90 kPa⁻¹), and good linear response across different pressure ranges (R² > 0.97). It shows excellent electrochemical performance, with a CV curve exhibiting a closed-leaf shape and specific capacitance of 0.814 F·g⁻¹ (at a scan rate of 10 mV·s⁻¹). The material also exhibits excellent electrothermal performance, reaching temperatures of 54.38 °C at 6 V and 90.85 °C at 9 V. In terms of UV protection, it has a UPF value of 328. Furthermore, its hydrophilicity is good, with water droplets being absorbed within 0.1 s, and this only slightly increases to 0.2 s after aging. In conclusion, the PPY/PPFF composite integrates multiple smart functions and maintains stable performance even after aging, providing reliable technical support and material assurance for smart textile applications in fields such as healthcare.

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用于下一代智能材料的多功能聚吡咯基柔性复合材料：集成压阻传感、储能、电热加热和紫外线防护

随着物联网和人工智能技术的不断进步，智能纺织品被广泛应用于医疗、体育、国防等领域。特别是老龄化社会对智能轮椅的需求大幅增加。然而，传统的功能单一的轮椅坐垫已经不能满足现代人对智能化的需求。为了解决这一问题，本研究采用原位聚合的方法，将导电聚合物聚吡咯（PPY）与预氧化PAN纤维毡（PPFF）结合，制备出具有优异耐老化性能的多功能柔性复合材料（PPY/PPFF）。该材料电阻率低（24.55 kΩ·cm），灵敏度高（S1 = 14.90 kPa−1），在不同压力范围内具有良好的线性响应(R2 >；0.97)。该材料具有优良的电化学性能，CV曲线呈闭叶状，比电容为0.814 F·g−1（扫描速率为10 mV·s−1）。该材料还表现出优异的电热性能，在6 V和9 V下的温度分别达到54.38°C和90.85°C。在防紫外线方面，UPF值为328。亲水性好，水滴在0.1 s内被吸收，老化后仅略微增加到0.2 s。综上所述，PPY/PPFF复合材料集多种智能功能于一体，即使老化也能保持稳定的性能，为智能纺织品在医疗等领域的应用提供可靠的技术支持和材料保障。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Composites Part B: Engineering 工程技术-材料科学：复合

CiteScore

24.40

自引率

11.50%

发文量

784

审稿时长

21 days

期刊介绍： Composites Part B: Engineering is a journal that publishes impactful research of high quality on composite materials. This research is supported by fundamental mechanics and materials science and engineering approaches. The targeted research can cover a wide range of length scales, ranging from nano to micro and meso, and even to the full product and structure level. The journal specifically focuses on engineering applications that involve high performance composites. These applications can range from low volume and high cost to high volume and low cost composite development. The main goal of the journal is to provide a platform for the prompt publication of original and high quality research. The emphasis is on design, development, modeling, validation, and manufacturing of engineering details and concepts. The journal welcomes both basic research papers and proposals for review articles. Authors are encouraged to address challenges across various application areas. These areas include, but are not limited to, aerospace, automotive, and other surface transportation. The journal also covers energy-related applications, with a focus on renewable energy. Other application areas include infrastructure, off-shore and maritime projects, health care technology, and recreational products.