High performance multifunctional bio-gel sensor prepared with konjac glucomannan and κ-carrageenan

IF 12.5 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers Pub Date : 2025-08-14 DOI:10.1016/j.carbpol.2025.124215

Yueguang Wang , Zifeng Huang , Di Zhang , Meining Li , Xinyan Wen , Xin Lei , Ziwei Ye , Jie Pang

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Abstract

In this study, a novel multifunctional biosensor was developed based on the synergistic cross-linking of Konjac glucomannan (KGM) and κ-Carrageenan (KC). This biosensor exhibits high sensitivity for detecting triple signals: temperature, humidity, and strain. This matrix demonstrates excellent mechanical toughness (elongation at break >300 %) and a low Young's modulus (173.017 ± 1.51 kPa). This material exhibits a high thermal sensitivity of 1.67 %°C⁻¹ in temperature detection, and a linear response range of −15 % to 45 % was achieved within the temperature range of 4–40 °C. For humidity sensing, it provides a three-stage linear response with sensitivities of −89.75 %/% RH (0–40 % RH), −182.21 %/% RH (40–75 % RH), and −53.45 %/% RH (75–95 % RH). In terms of the strain sensing performance, this material demonstrates excellent wide-range detection capability (1–350 % strain), with a response value of approximately 875 %, and it also has high sensitivity (GF = 2.54 ± 0.06). Compared with traditional biomass-based gel sensors, the response limit of this sensor has been significantly increased while maintaining higher sensitivity. Experiments confirmed that the sensor can be monitored via resistance signals and exhibits stable performance (>2000 cycles) in flexible wearable applications such as human breathing monitoring and joint motion tracking, offering an innovative solution for intelligent medical monitoring and environmentally friendly electronic skin development.

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以魔芋葡甘露聚糖和κ-卡拉胶制备的高性能多功能生物凝胶传感器

本研究利用魔芋葡甘露聚糖（KGM）和κ-卡拉胶（KC）的协同交联，研制了一种新型多功能生物传感器。这种生物传感器具有检测三重信号的高灵敏度：温度，湿度和应变。该基体具有优异的机械韧性（断裂伸长率>； 300%）和低杨氏模量（173.017±1.51 kPa）。该材料在温度检测中具有1.67%°C−1的高热敏度，在4-40°C的温度范围内实现了- 15%至45%的线性响应范围。对于湿度传感，它提供三级线性响应，灵敏度为−89.75% /% RH (0 - 40% RH),−182.21% /% RH （40 - 75% RH）和−53.45% /% RH （75 - 95% RH）。在应变传感性能方面，该材料具有优异的宽范围检测能力（1 - 350%应变），响应值约为875%，同时具有较高的灵敏度（GF = 2.54±0.06）。与传统的生物质凝胶传感器相比，该传感器在保持较高灵敏度的同时，响应极限显著提高。实验证实，该传感器可通过电阻信号进行监测，并在人体呼吸监测、关节运动跟踪等柔性可穿戴应用中表现出稳定的性能（>；2000周期），为智能医疗监测和环保电子皮肤开发提供了创新的解决方案。

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来源期刊

Carbohydrate Polymers 化学-高分子科学

CiteScore

22.40

自引率

8.00%

发文量

1286

审稿时长

47 days

期刊介绍： Carbohydrate Polymers stands as a prominent journal in the glycoscience field, dedicated to exploring and harnessing the potential of polysaccharides with applications spanning bioenergy, bioplastics, biomaterials, biorefining, chemistry, drug delivery, food, health, nanotechnology, packaging, paper, pharmaceuticals, medicine, oil recovery, textiles, tissue engineering, wood, and various aspects of glycoscience. The journal emphasizes the central role of well-characterized carbohydrate polymers, highlighting their significance as the primary focus rather than a peripheral topic. Each paper must prominently feature at least one named carbohydrate polymer, evident in both citation and title, with a commitment to innovative research that advances scientific knowledge.