A May 16, 2025 article on bioengineer.org announces a new hydrogel,

In the relentless quest to develop materials that combine flexibility, durability, and functionality, a novel breakthrough in hydrogel technology shines a promising light on the future of wearable electronics and soft robotics. Engineers and material scientists from Southwest Forestry University in China have synthesized an ultra-robust hydrogel utilizing bamboo cellulose-based carbon nanomaterials (C-BCN), a development that could set new standards in the performance of flexible devices.

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A May 16, 2025 Journal of Bioresources and Bioproducts press release on EurekAlert, which originated the article, delves further into the topic,

Hydrogels have long been recognized for their potential in various applications, including tissue engineering, drug delivery, and wearable electronics. However, traditional hydrogels often lack the mechanical strength and durability needed for demanding applications. Now, researchers from Southwest Forestry University in China have developed an innovative solution using bamboo cellulose-based carbon nanomaterials (C-BCN) to create an ultra-robust hydrogel with remarkable properties.

The study, published in the Journal of Bioresources and Bioproducts, details the process of creating the hydrogel. The researchers treated bamboo fibers with phthalic anhydride and then carbonized them to produce C-BCN. These nanomaterials were integrated into an acrylamide precursor solution to synthesize a conductive hydrogel (PAM-C-BCN) with exceptional mechanical properties. The hydrogel exhibited a fracture strength of 363 kPa, an elongation of 2,254%, a fracture energy of 30 kJ/m², and a toughness of 3.04 MJ/m³. Additionally, the hydrogel demonstrated high adhesion (up to 7.5 kPa on pigskin) and conductivity (0.21 S/m).

The researchers found that the C-BCN significantly enhanced the mechanical resilience and energy dissipation capabilities of the hydrogel. The nanomaterials formed strong interfacial interactions with the polyacrylamide (PAM) matrix, creating a densely interpenetrated network. This structure not only improved the hydrogel’s mechanical properties but also provided excellent fatigue resistance and adhesion. The hydrogel’s ability to restrain crack propagation was particularly noteworthy, making it highly suitable for applications requiring high mechanical performance.

The study’s findings have significant implications for the development of flexible electronics and wearable devices. The PAM-C-BCN hydrogel’s excellent mechanical properties, combined with its high conductivity and adhesion, make it a promising material for applications such as electronic skin, soft robotics, and strain sensors. The researchers suggest that further optimization of the C-BCN production process could enhance the hydrogel’s performance even further.

Here’s a link to and a citation for the paper,

Fabricating ultra-robust hydrogels with adhesive properties by restraining crack propagation with bamboo cellulose-based carbon nanomaterials by Xin Duan, Huanxin Huo, Hongshan Li, Yihong Gao, Haoran Shi, Feng Kuang, Yumeng Chen, Jianyong Wan, Jingjie Shen, Guanben Du, Long Yang. Journal of Bioresources and Bioproducts DOI: https://doi.org/10.1016/j.jobab.2025.05.002 In Press, Corrected Proof Available online 14 May 2025 Creative Commons Licence: CC BY-NC-ND 4.0 (Attribution-NonCommercial-NoDerivatives 4.0 International Deed)

This paper is open access.