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Sustainable, recyclable, and highly wear-resistant wood matrix as a new paper-based friction material

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Abstract

Shifting of the preparation strategy of paper-based friction materials from unsustainable to green, environmentally friendly, and recyclable constitutes an important part of low-carbon manufacturing. Herein, a solvent encapsulation strategy involving wood dissolution in a deep eutectic solvent and lignin–cellulose structural reorganization was adopted to obtain a recyclable wood-based slurry from poplar powder. Lignin–cellulose film (LCF) was obtained by vacuum filtration and followed by removal of moisture from slurry. Micro-nanocellulose was used as a reinforcement, which interacted with the lignin binder through hydrogen bonding. The average tensile strength and flexibility of LCF reached 68.7 MPa and 3.06 MJ m−3 respectively. With a minimum coefficient of friction of 0.19 and a minimum wear rate of 6.9 × 10−3 mm3 (N m)−1, LCF could maintain long-lasting frictional stability in a stable condition. Moreover, the wood-based slurry could be easily recycled through convenient experimental treatments, or degraded by microorganisms in the natural environment within 40 days. This sustainable wood-based material obtained via a green and recyclable production strategy provides a promising alternative method to that of traditional paper-based friction materials.

Graphical abstract

Herein, a solvent encapsulation strategy which involved wood dissolution in deep eutectic solvent (DES) and lignin–cellulose structural reorganization was adopted to obtain recyclable wood-based films from poplar wood, which shows high mechanical strength, excellent flexibility, water stability, and high wear resistance.

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All data generated or analyzed during this study are included in this published article and its supplementary information file.

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Acknowledgments

This work is supported by National Natural Science Foundation of China (51875330 and 51975342), Natural Science Foundation of Shaanxi Province (2021JQ-552, 2021JQ-538, and 2019JZ-24).

Funding

National Natural Science Foundation of China (51875330 and 51975342); National Key Research and Development Program of China (2022YFB3809001).

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ZS: Methodology, data curation, writing-original draft. XJ: project administration, supervision, funding acquisition. RT: characterization. JY: writing -review and editing. SW and YL: software. DS and LF: conceptualization. HS: writing-review and editing, Funding acquisition, conceptualization, supervision.

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Correspondence to Xiaohua Jia or Haojie Song.

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Shan, Z., Jia, X., Tian, R. et al. Sustainable, recyclable, and highly wear-resistant wood matrix as a new paper-based friction material. Cellulose 30, 6601–6619 (2023). https://doi.org/10.1007/s10570-023-05292-8

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  • DOI: https://doi.org/10.1007/s10570-023-05292-8

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