用于空气湿度测量的纳米纤维素电阻式传感器

IF 0.6 Q3 MULTIDISCIPLINARY SCIENCES
V. Lapshuda, V. Koval, M. Dusheiko, Yu. Yasiievych, V. Barbash, O. Yashchenko
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引用次数: 0

摘要

引言空气相对湿度的测量在人类生活的各个方面都起着至关重要的作用,例如气候控制系统、医疗呼吸和皮肤水合监测。湿度传感器通常使用无机材料和石油聚合物。然而,向可生物降解材料过渡的趋势日益明显,因为这种材料无需进行废物处理。目前,纳米纤维素(NC)作为一种很有前途的湿度传感器材料正在被探索之中。然而,纳米纤维素的化学成分和纳米颗粒大小对传感器特性的影响仍未得到充分研究。本研究旨在探讨 NC 的化学成分和结构对湿度传感器参数的影响。NC 是用芦苇秆和小麦秸秆通过氧化和酸水解方法合成的。已制造出质量在 0.3-3 毫克范围内的 NC 薄膜传感器。分析了传感器的静态参数(响应、灵敏度、可逆性和可重复性)和动态参数(短期和长期稳定性、响应和恢复时间)。制造方法会影响数控系统的化学成分,而原材料会影响其结构。与水解法相比,氧化法生产的传感器在灵敏度(2.69 - 106)、响应(0.2 (%RH)-1 )、恢复时间(60 秒)和长期稳定性(1.44%)方面都有所提高。此外,与芦苇秆 NC 相比,使用小麦秸秆 NC 作为源材料可提高可逆性(5%)、可重复性(5% 偏差)、短期稳定性(30% 偏差)和响应时间(1 秒)。研究证实,纳米纤维素的原材料会影响传感器的可逆性、可重复性、响应时间和短期稳定性。制造方法对传感器的灵敏度、响应、恢复时间和长期稳定性都有影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Nanocellulose-Based Resistive Sensors for Air Humidity Measurements
Introduction. The measurement of relative air humidity plays a crucial role in various aspects of human life, such as climate control systems, medical breath and skin hydration monitoring. Typically, humidity sensors use inorganic materials and petroleum-derived polymers. However, there is a growing trend towards the transition to biodegradable materials, which eliminates the need for waste disposal.Problem Statement. Currently, nanocellulose (NC) has been being explored as a promising material for humidity sensors. However, the influence of the chemical composition and nanoparticle size of NC on the sensor characteristics remains understudied.Purpose. This study aims to investigate the influence of the chemical composition and structure of NC on the parameters of humidity sensors.Materials and Methods. NC has been synthesized from reed stalks and wheat straw bz the oxidation and acid hydrolysis methods. NC-film sensors having a mass within 0.3—3 mg have been fabricated. The static parameters (response, sensitivity, reversibility, and repeatability) and the dynamic parameters (short and long-term stability, response and recovery time) of the sensors have been analyzed.Results. The manufacturing method influences the NC chemical composition, while the origin material affects its structure. The sensors produced by the oxidation method have demonstrated improved sensitivity (2.69 · 106), response (0.2 (%RH)–1), recovery time (60 s) and long-term stability (1.44%) as compared with those made by the hydrolysis method. Additionally, the application of wheat straw NC as origin material has resulted in improved reversibility (5%), repeatability (5% deviation), short-term stability (30% deviation), and response time (1 s) as compared with the reed stalks NC.Conclusions. It has been established that the origin material of nanocellulose influences the reversibility, repeatability, response time, and short-term stability of the sensors. The manufacturing method has effect on the sensitivity, response, recovery time, and long-term stability of the sensors.
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来源期刊
Science and innovation
Science and innovation MULTIDISCIPLINARY SCIENCES-
CiteScore
1.10
自引率
0.00%
发文量
55
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