The liquid barrier is a central component of functional liquid packaging materials and is crucial for encapsulating liquid food. To develop high-performance liquid packaging materials for the long-term storage of liquid food, a strong and stable liquid barrier and the simultaneous integration of diverse functionalities must be realized. In this study, inspired by mussel adhesion proteins, nanoparticles are synthesized through oxidative self-polymerization. Furthermore, electrostatic spinning is used for creating multifunctional electrospun fibers for liquid food packaging, which is inspired by the superhydrophobicity of lotus leaf surface and structures of red blood cells. A unique Janus structure with a thin hydrophilic layer and a thick hydrophobic layer prevents liquid food penetration for 12 (EHN/KN electrospun fibers) and 17 days (KN/EHN electrospun fibers). The liquid infiltration mechanism of Janus electrospun fibers is elucidated using the multibody dissipative particle dynamics method, emphasizing their efficacy in avoiding liquid penetration. Moreover, multifunctional KN/EHN electrospun fibers exhibit remarkable characteristics such as water resistance (water contact angle > 150°), UV-blocking (∼100 %), degradability (70 days in soil), biosafety (∼100 %), antioxidation (> 90 %), antimicrobial (∼100 %), grapes and meat freshness retention properties. Thus, this study provides insights into sustainable, high-performance liquid food packaging for enhanced preservation.

中文翻译：

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全天然和三重启发的 Janus 电纺纤维，具有集成功能，适用于高性能液体食品包装


液体屏障是功能性液体包装材料的核心组成部分，对于封装液体食品至关重要。要开发用于长期储存液体食品的高性能液体包装材料，必须实现强大而稳定的液体阻隔性以及多种功能的同时集成。在这项研究中，受贻贝粘附蛋白的启发，通过氧化自聚合合成纳米颗粒。此外，受荷叶表面的超疏水性和红细胞结构的启发，静电纺丝可用于制造用于液体食品包装的多功能静电纺丝纤维。独特的 Janus 结构具有薄亲水层和厚疏水层，可防止液体食物渗透 12 天（EHN/KN 电纺纤维）和 17 天（KN/EHN 电纺纤维）。使用多体耗散粒子动力学方法阐明了 Janus 电纺纤维的液体渗透机制，强调了其避免液体渗透的功效。此外，多功能 KN/EHN 电纺纤维表现出显着的特性，如耐水性（水接触角 > 150°）、阻挡紫外线（∼100%）、可降解性（在土壤中 70 天）、生物安全性（∼100%）、抗氧化（ > 90%）、抗菌（∼100%）、葡萄和肉类保鲜性能。因此，这项研究为可持续、高性能液体食品包装提供了见解，以增强保存效果。