Efficient dissociation of ultra-high-strength bamboo original fibers via deep eutectic solvent pretreatment for sustainable composite reinforcement.
5 affiliations
- 1Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Light Industry and Food Engineering, College of Chemical Engineering, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, China.
- 2Center of Bee Research and its Products (CBRP), Biology Department, College of Science, King Khalid University, P.O. Box 9004, Abha, Saudi Arabia.
- 3Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Light Industry and Food Engineering, College of Chemical Engineering, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, China. [email protected].
- 4Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Light Industry and Food Engineering, College of Chemical Engineering, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, China. [email protected].
- 5Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Light Industry and Food Engineering, College of Chemical Engineering, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, China. [email protected].
Abstract
Sustainable structural fibers are highly desirable because many conventional high-performance fibers are neither renewable nor biodegradable. Bamboo original fibers, which possess a natural hollow vascular bundle architecture, represent a promising biomass-derived reinforcement but are difficult to isolate without damaging their structure. Here, we develop a mild "top-down" strategy to efficiently dissociate intact bamboo original fibers (BpOFs) from pretreated natural bamboo using a deep eutectic solvent (ChCl/OA-DES) treatment at 110 °C for 1 h. The treatment selectively weakens parenchyma cell cohesion (elastic modulus reduced from 6.24 to 3.14 GPa) while preserving fiber cell stiffness (15.04 to 15.92 GPa), enabling rapid separation of vascular bundles through subsequent CH₃COOH/H₂O₂ delignification and simple roller compaction. Controlled hydrogen-bond reconstruction during drying enhances mechanical performance, yielding fibers with an apparent tensile strength of 1947 ± 217 MPa while retaining the native hollow structure. Analysis of the load-bearing cell wall further reveals an intrinsic cell-wall stress of 2636 ± 197 MPa, indicating highly efficient stress transfer within the cellulose framework. The preserved tubular architecture provides low density, flexibility, and favorable interfacial interactions with polymer matrices. When incorporated into epoxy resin, BpOFs enhance bending strength and impact resistance, demonstrating their potential as lightweight, renewable reinforcement for high-performance composites.
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BibTeX
@article{dai2026efficient,
title = {{Efficient dissociation of ultra-high-strength bamboo original fibers via deep eutectic solvent pretreatment for sustainable composite reinforcement.}},
author = {Ziliang Dai and Lili Zhang and Juan Yu and Enqing Zhu and Rui Wang and Jiao Meng and Muhammad Wajid Ullah and Khalid Ali Khan and Wen He and Yimin Fan and Zhiguo Wang},
journal = {Nature communications},
year = {2026},
month = sep,
doi = {10.1038/s41467-026-74533-8},
url = {https://europepmc.org/article/MED/42875416},
note = {CC BY-NC-ND},
}
RIS
TY - JOUR
TI - Efficient dissociation of ultra-high-strength bamboo original fibers via deep eutectic solvent pretreatment for sustainable composite reinforcement.
AU - Ziliang Dai
AU - Lili Zhang
AU - Juan Yu
AU - Enqing Zhu
AU - Rui Wang
AU - Jiao Meng
AU - Muhammad Wajid Ullah
AU - Khalid Ali Khan
AU - Wen He
AU - Yimin Fan
AU - Zhiguo Wang
PY - 2026
DA - 2026/09/15
JO - Nature communications
DO - 10.1038/s41467-026-74533-8
UR - https://europepmc.org/article/MED/42875416
AB - Sustainable structural fibers are highly desirable because many conventional high-performance fibers are neither renewable nor biodegradable. Bamboo original fibers, which possess a natural hollow vascular bundle architecture, represent a promising biomass-derived reinforcement but are difficult to isolate without damaging their structure. Here, we develop a mild "top-down" strategy to efficiently dissociate intact bamboo original fibers (BpOFs) from pretreated natural bamboo using a deep eutectic solvent (ChCl/OA-DES) treatment at 110 °C for 1 h. The treatment selectively weakens parenchyma cell cohesion (elastic modulus reduced from 6.24 to 3.14 GPa) while preserving fiber cell stiffness (15.04 to 15.92 GPa), enabling rapid separation of vascular bundles through subsequent CH₃COOH/H₂O₂ delignification and simple roller compaction. Controlled hydrogen-bond reconstruction during drying enhances mechanical performance, yielding fibers with an apparent tensile strength of 1947 ± 217 MPa while retaining the native hollow structure. Analysis of the load-bearing cell wall further reveals an intrinsic cell-wall stress of 2636 ± 197 MPa, indicating highly efficient stress transfer within the cellulose framework. The preserved tubular architecture provides low density, flexibility, and favorable interfacial interactions with polymer matrices. When incorporated into epoxy resin, BpOFs enhance bending strength and impact resistance, demonstrating their potential as lightweight, renewable reinforcement for high-performance composites.
SN - 2041-1723
ER -