Hybrid cellulose nanofibril/MXene/polydimethylsiloxane conductive composites for enhanced strain sensing

IF 4.8 2区工程技术 Q1 MATERIALS SCIENCE, PAPER & WOOD

Cellulose Pub Date : 2025-07-02 DOI:10.1007/s10570-025-06623-7

Mohammad Shayan, Meen Sung Koo, Ragab Abouzeid, Yan Chen, Jaegyoung Gwon, Qinglin Wu

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引用次数: 0

Abstract

Fabrication of stretchable hybrid cellulose nanofibril (CNF)/MXene/polydimethylsiloxane (PDMS) nanocomposite sensors is a challenging task due to inherent incompatibility between hydrophilic CNFs and MXene, and hydrophobic PDMS. In this work, a porous CNF sponge embedded with MXene nanoflakes was created, which was then infiltrated with PDMS to form a flexible, stretchable nanocomposite film. The resultant CNF/MXene network within the PDMS matrix enhanced electrical conductivity and strain sensitivity, while the PDMS provided mechanical flexibility. Scanning and transmission electron microscopy images revealed a well-integrated structure with good dispersion of MXene along CNFs, promoting strong interfacial interactions and mechanical stability. The sensor demonstrated consistent mechanical performance, with tensile strengths of 320 ± 19 kPa and 400 ± 24 kPa at 5% and 10% strains, respectively. Strain sensing tests revealed ΔR/R0 increased in the 0–17% strain range, with a higher gauge factor at increased strain levels, making it suitable for small workable strain ranges. Furthermore, thermal analysis showed that the incorporation of MXene accelerated thermal degradation, while the addition of PDMS enhanced the thermal stability of the composite, resulting in improved durability for long-term strain sensing applications.

Graphical abstract

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混合纤维素纳米纤维/MXene/聚二甲基硅氧烷导电复合材料增强应变传感

可拉伸复合纤维素纳米纤维(CNF)/MXene/聚二甲基硅氧烷（PDMS）纳米复合传感器的制备是一项具有挑战性的任务，因为CNF与MXene亲水性和PDMS疏水性之间存在固有的不相容性。在这项工作中，我们制作了一个嵌入MXene纳米片的多孔CNF海绵，然后将PDMS渗透到海绵中，形成一个柔性的、可拉伸的纳米复合薄膜。PDMS基体内的CNF/MXene网络增强了电导率和应变灵敏度，而PDMS提供了机械灵活性。扫描电镜和透射电镜图像显示，MXene在CNFs上具有良好的分散结构，促进了强的界面相互作用和机械稳定性。在5%应变和10%应变下，传感器的抗拉强度分别为320±19 kPa和400±24 kPa。应变传感测试显示ΔR/R0在0-17%应变范围内增加，应变水平增加时具有更高的测量因子，使其适用于较小的工作应变范围。此外，热分析表明，MXene的加入加速了热降解，而PDMS的加入增强了复合材料的热稳定性，从而提高了长期应变传感应用的耐久性。图形抽象

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来源期刊

Cellulose 工程技术-材料科学：纺织

CiteScore

10.10

自引率

10.50%

发文量

580

审稿时长

3-8 weeks

期刊介绍： Cellulose is an international journal devoted to the dissemination of research and scientific and technological progress in the field of cellulose and related naturally occurring polymers. The journal is concerned with the pure and applied science of cellulose and related materials, and also with the development of relevant new technologies. This includes the chemistry, biochemistry, physics and materials science of cellulose and its sources, including wood and other biomass resources, and their derivatives. Coverage extends to the conversion of these polymers and resources into manufactured goods, such as pulp, paper, textiles, and manufactured as well natural fibers, and to the chemistry of materials used in their processing. Cellulose publishes review articles, research papers, and technical notes.