用于高性能和可持续材料的低温水蒸发介导的木材融合和致密化

IF 9.6 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2025-04-22 DOI:10.1021/acs.nanolett.5c00562

Tao Zhang, Liangke Lin, Juya Zhu, Yizhong Cao, Qi Wang, Wentao Huang, Chi Zhang, Xiaoke Zhang, Zhuo Chen, Wenqiang Liu, Pei Yang, Weimin Chen, Minzhi Chen, Huining Xiao, Xiaoyan Zhou

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引用次数: 0

摘要

开发高性能木制品以取代碳密集型结构材料是减少碳排放的关键途径，而通过环保加工技术将低强度木材转化为高性能散装材料是具有挑战性的，但也是非常值得期待的。在此，一种简单而可持续的水处理策略被报道为通过脱木质素将木块牢固地组装成高性能的散装材料，然后在室温下蒸发水，消除了对传统粘合剂的需求。当水渗透并膨胀微原纤维时，软化木材的可塑性显著增强，从而促进了微原纤维的相互扩散。强大的毛细管应力驱动微原纤维如此接近，最终完成分子水平的融合和致密化，这赋予自组装木材优越的机械强度（抗拉强度~ 535.21 MPa，剪切强度~ 5.02 MPa，溶剂稳定性）。这种环保的水处理技术为开发先进、可持续和高性能的木制品铺平了道路。

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Low-Temperature Water Evaporation-Mediated Fusion and Densification of Wood for High-Performance and Sustainable Materials

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Low-Temperature Water Evaporation-Mediated Fusion and Densification of Wood for High-Performance and Sustainable Materials

Developing high-performance wood products to replace carbon-intensive structural materials is a key approach to reducing carbon emissions, whereas transforming low-strength wood into high-performance bulk materials through eco-friendly processing techniques is challenging but highly desired. Herein, a facile and sustainable water processing strategy is reported to robustly assemble wood pieces into high-performance bulk materials via delignification, followed by room-temperature water evaporation, eliminating the need for traditional adhesives. As water penetrates and swells the microfibrils, the plasticity of the softened wood is significantly enhanced, thereby facilitating the mutual diffusion of the microfibrils. The strong capillary stresses drive the microfibrils so close that they eventually accomplish molecular-level fusion and densification, which endows self-assembled wood with superior mechanical strength (tensile strength ∼ 535.21 MPa, lap shear strength ∼ 5.02 MPa, and solvent stability). This eco-friendly, water-mediated processing technique paves the way for the development of advanced, sustainable, and high-performance wood products.

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来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.