Li Xuebo, Niu Yuan, Jiang Zhanpeng, Pang Jiuyin, Niu Xiaoyi
Key Laboratory of Wood Materials Science and Engineering, Beihua University, Jilin 132013, China.
Polymers (Basel). 2025 Jul 25;17(15):2030. doi: 10.3390/polym17152030.
This study focuses on the development of lignin-based carbon-fiber-reinforced laminated veneer lumber (LVL) beams for garden timber structures, addressing wood shortages and environmental concerns. The research consisted of three main phases: the extraction and characterization of the lignin from corn stalks; the preparation and characterization of lignin-based carbon fibers; the fabrication and testing of reinforced LVL beams. Lignin was extracted from corn stalks using a deep eutectic solvent, followed by the preparation of lignin-based carbon fibers through electrospinning. These carbon fibers were integrated with poplar veneers to create reinforced LVL beams. The test results demonstrated significant improvements in mechanical properties, with the reinforced LVL beams exhibiting a 17% increase in elastic modulus and a 30% enhancement in flexural strength compared with conventional LVL beams. Notable improvements were also observed in tensile strength, compressive strength, and shear strength. This research provides a novel approach for producing high-value-added carbon fibers from agricultural waste, advancing the development of sustainable building materials.
本研究聚焦于用于园林木结构的木质素基碳纤维增强单板层积材（LVL）梁的开发，以解决木材短缺和环境问题。该研究包括三个主要阶段：从玉米秸秆中提取木质素并进行表征；制备并表征木质素基碳纤维；制造并测试增强LVL梁。使用深共熔溶剂从玉米秸秆中提取木质素，随后通过静电纺丝制备木质素基碳纤维。这些碳纤维与杨树单板结合制成增强LVL梁。测试结果表明，与传统LVL梁相比，增强LVL梁的力学性能有显著提高，弹性模量提高了17%，抗弯强度提高了30%。在拉伸强度、抗压强度和抗剪强度方面也观察到了显著改善。本研究为利用农业废弃物生产高附加值碳纤维提供了一种新方法，推动了可持续建筑材料的发展。
