用于可拉伸织物的架构化双网络无溶剂胶粘剂
Architected Dual-Network Solvent-free Adhesives for Stretchable Fabrics
AI总结：
受肌腱和蜘蛛丝启发，本文提出一种基于PMMA-b-PnBA-b-PMMA三嵌段共聚物与原位聚合PnBA网络的无溶剂双网络胶粘剂，通过调控次级网络交联密度实现高强度与可拉伸性，性能媲美缝纫，适用于软体机器人、柔性电子和运动服装等领域。
摘要：
天然系统（如肌腱和蜘蛛丝）展示了如何通过整合刚性与柔性网络结构来有效实现强度与可拉伸性的结合。受这些系统启发，我们开发了一种新型无溶剂双网络胶粘剂，其基于自组装ABA三嵌段共聚物聚（甲基丙烯酸甲酯）-聚（丙烯酸正丁酯）-聚（甲基丙烯酸甲酯）（PMMA-b-PnBA-b-PMMA），专为同时需要高强度和高可拉伸性的应用而设计。该三嵌段共聚物通过PMMA端段的微区形成物理交联网络，提供结构完整性，而PnBA中间段形成柔软、可拉伸的基体。为进一步增强力学性能，第二种聚（丙烯酸正丁酯）（PnBA）网络被原位聚合，将PMMA微区锁定在位并形成承力体系。通过改变次级网络的交联密度，我们调控胶粘剂的力学性能（杨氏模量：0.17 - 1.18 MPa）以适应不同基材，从而形成力学透明的接缝。所得双网络体系结合了不同策略以实现高强度和高可拉伸性，其胶粘性能可与缝纫等工业方法相媲美，特别是在粘合氯丁橡胶织物复合材料及密封接缝方面。我们的无溶剂方法还消除了冗长的溶剂蒸发步骤，为软体机器人、柔性电子和运动服装等领域的柔性胶粘应用提供了一种环保且更高效的替代方案。
英文摘要：
Natural systems, such as tendons and spider silk, demonstrate how the combination of strength and stretchability can be effectively achieved by integrating stiff and flexible network structures. Inspired by these systems, we developed a novel, solvent-free dual-network adhesive based on a self-assembling ABA triblock copolymer, poly(methyl methacrylate)-poly(n-butyl acrylate)-poly(methyl methacrylate) (PMMA-b-PnBA-b-PMMA), designed for applications requiring both high strength and stretchability. The triblock copolymer forms a physically crosslinked network through microdomains of PMMA end-blocks that provide structural integrity, while the PnBA mid-block forms a soft, stretchable matrix. To further enhance mechanical performance, a second poly(n-butyl acrylate) (PnBA) network is polymerized in situ, locking the PMMA microdomains in place and creating a load-bearing system. By varying the crosslinking density of the secondary network, we tailor the adhesive's mechanical properties (Young's modulus: 0.17 - 1.18 MPa) to suit different substrates, creating a mechanically transparent seam. The resulting dual-network system combines different strategies to achieve high strength and stretchability, with adhesive performance comparable to industrial methods such as sewing, particularly in bonding neoprene fabric composites and sealing the joints. Our solvent-free approach also eliminates the need for lengthy solvent evaporation steps, offering an eco-friendly and more efficient alternative for flexible adhesive applications in fields such as soft robotics, flexible electronics, and sports apparel.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
