Development and properties of biodegradable PBAT/PPy/ETTPBAT yarn strain sensors

IF 4.1 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Sensors and Actuators A-physical Pub Date : 2025-07-18 DOI:10.1016/j.sna.2025.116901

Huikai Nan, Chunhui Zhang, Jianhong Liu, Chengxue Li, Chunxiu Liu, Shuolei Wang, Yubing Dong

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引用次数: 0

Abstract

Conventional flexible sensor substrates often suffer from critical limitations, such as non-biodegradability, restricted elastic strain ranges, and vulnerability of exposed conductive functional layers. The development of flexible wearable strain sensors with biodegradability, high ductility, broad elastic strain ranges, and reusability is imperative. Here, the epoxidized soybean oil (ESO)/tannic acid (TA)/triallyl isocyanurate (TAIC)/polybutylene adipate-co-terephthalate (PBAT) (ETTPBAT) fibers with significantly expanded elastic strain capability were synthesized via melt spinning and UV irradiation techniques, and the PBAT/polypyrrole (PPy)/ETTPBAT yarn strain sensors were fabricated via in-situ polymerization, twisting, and encapsulation processes. The effects of UV irradiation duration, polymerization time, and p-toluene sulfonic acid monohydrate (p-TSA) dopant concentration on the mechanical properties, thermodynamic characteristics, sensing performance, and electrothermal conversion capabilities of the PBAT/PPy/ETTPBAT yarn strain sensors were systematically investigated. The prepared biodegradable PBAT-based strain sensors have stable sensing performance and larger elastic strain range, which is valuable for enhancing the performance and application of biodegradable polymer-based strain sensors.

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可生物降解PBAT/PPy/ETTPBAT纱线应变传感器的研制与性能

传统的柔性传感器基片经常受到严重的限制，如不可生物降解性，有限的弹性应变范围，以及暴露的导电功能层的脆弱性。开发可生物降解、高延展性、弹性应变范围宽、可重复使用的柔性可穿戴应变传感器势在必行。本研究通过熔融纺丝和紫外辐照技术合成了具有显著扩展弹性应变能力的环氧大豆油(ESO)/单宁酸(TA)/异氰脲酸三烯丙酯(TAIC)/聚己二酸丁二酯-对苯二甲酸酯（PBAT）（ETTPBAT）纤维，并通过原位聚合、加捻和包封工艺制备了PBAT/聚吡啶(PPy)/ETTPBAT纱线应变传感器。系统研究了紫外光照射时间、聚合时间和对甲苯磺酸一水合物（p-TSA）掺杂浓度对PBAT/PPy/ETTPBAT纱线应变传感器的力学性能、热力学特性、传感性能和电热转换能力的影响。制备的可生物降解pbat基应变传感器具有稳定的传感性能和较大的弹性应变范围，对提高可生物降解聚合物基应变传感器的性能和应用具有重要意义。

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来源期刊

Sensors and Actuators A-physical 工程技术-工程：电子与电气

CiteScore

8.10

自引率

6.50%

发文量

630

审稿时长

49 days

期刊介绍： Sensors and Actuators A: Physical brings together multidisciplinary interests in one journal entirely devoted to disseminating information on all aspects of research and development of solid-state devices for transducing physical signals. Sensors and Actuators A: Physical regularly publishes original papers, letters to the Editors and from time to time invited review articles within the following device areas: • Fundamentals and Physics, such as: classification of effects, physical effects, measurement theory, modelling of sensors, measurement standards, measurement errors, units and constants, time and frequency measurement. Modeling papers should bring new modeling techniques to the field and be supported by experimental results. • Materials and their Processing, such as: piezoelectric materials, polymers, metal oxides, III-V and II-VI semiconductors, thick and thin films, optical glass fibres, amorphous, polycrystalline and monocrystalline silicon. • Optoelectronic sensors, such as: photovoltaic diodes, photoconductors, photodiodes, phototransistors, positron-sensitive photodetectors, optoisolators, photodiode arrays, charge-coupled devices, light-emitting diodes, injection lasers and liquid-crystal displays. • Mechanical sensors, such as: metallic, thin-film and semiconductor strain gauges, diffused silicon pressure sensors, silicon accelerometers, solid-state displacement transducers, piezo junction devices, piezoelectric field-effect transducers (PiFETs), tunnel-diode strain sensors, surface acoustic wave devices, silicon micromechanical switches, solid-state flow meters and electronic flow controllers. Etc...