You Muqiu, Xu Jinhao, Zao Yamei, Zhou Jing, Jin Yongcan, Li Dagang, Xu Zhaoyang, Chen Chuchu
College of Materials Science and Engineering, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, Jiangsu 210037, China.
College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China.
Carbohydr Polym. 2025 Nov 1;367:124013. doi: 10.1016/j.carbpol.2025.124013. Epub 2025 Jul 7.
The development of high-performance biomass-derived soft materials is crucial for advancing sustainable alternatives to petroleum-based systems, and bio-based composite gel materials became a favorable choice with their biocompatibility and sustainability. However, it still remains a challenge to fabricate bio-based composite gels with favorable mechanical performance and environmental stability via a simple and energy-efficient approach. Herein, a wood-based composite gel (WCG) was fabricated by compositing cellulose fibers with polymerizable deep eutectic solvents (PDES), consisting of choline chloride (ChCl), acrylic acid (AA) and acrylamide (AM) under a fast process of UV radiation within 2 min. The naturally oriented structure of the aligned cellulose fibers reinforced WCG with a high mechanical strength of 62.51 ± 4.41 MPa, while the multiple hydrogen bond networks contribute to the great toughness (7.77 ± 0.34 MJ m), simultaneously exhibiting a high tensile strain of 19.91 ± 2.39 %. Additionally, WCGs exhibited environmental stability (-60-100 °C) to overcome the critical limitations of conventional gel materials in low mechanical properties due to loss of solvents. Integrated with sensing performance and thermal-insulation, flame retardant, WCGs enabled human motion detection in smart building systems, showing a promising future for the rapid preparation of high-performance, sustainable bio-based efficient smart materials.
高性能生物质基软材料的开发对于推进石油基系统的可持续替代品至关重要，而生物基复合凝胶材料因其生物相容性和可持续性成为了一个不错的选择。然而，通过简单且节能的方法制备具有良好机械性能和环境稳定性的生物基复合凝胶仍然是一个挑战。在此，通过将纤维素纤维与由氯化胆碱（ChCl）、丙烯酸（AA）和丙烯酰胺（AM）组成的可聚合深共熔溶剂（PDES）复合，在2分钟内的快速紫外辐射过程中制备了一种木质基复合凝胶（WCG）。取向排列的纤维素纤维的天然取向结构增强了WCG，其具有62.51±4.41MPa的高机械强度，而多个氢键网络有助于其具有高韧性（7.77±0.34MJ·m），同时还表现出19.91±2.39%的高拉伸应变。此外，WCG在-60至100°C的环境中表现出稳定性，克服了传统凝胶材料因溶剂损失导致机械性能低的关键局限性。结合传感性能以及隔热、阻燃性能，WCG能够在智能建筑系统中实现人体运动检测，为快速制备高性能、可持续的生物基高效智能材料展现出了广阔的前景。
