Abstract:

Leather collagen is a kind of natural biomass material derived from animal skin. The advantages of good biocompatibility, degradability, low antigenicity and easy functionalization make the leather collagen showing great application potential in flexible intelligent wearable fields such as flexible sensing, electromagnetic shielding, human thermal management and energy storage. However, some inherent shortcomings, such as poor thermal stability, low mechanical strength and easy to mildew and insufficient functionality, limite the application of leather collagen in the field of flexible intelligent wearable. In this review, the multilevel structure and performance advantages of leather collagen were briefly introduced. Different modification methods of collagen were discussed, including physical crosslinking, chemical crosslinking and blending modification. In addition, this review paid more attention to the research progress of leather collagen as flexible wearable materials in flexible sensing, electromagnetic shielding, human thermal management and supercapacitors. Finally, the development trend of leather collagen in the field of flexible wearable electronics was forecasted, and it was pointed out that the development of multi-functional integrated leather collagen flexible wearable electronic materials with extreme environmental stability and the realization of on-demand customization of flexible intelligent wearable materials based on leather collagen would be the focus of further research.

Key words: leather collagen, modified, biomaterials, flexible intelligent wearable, energy harvesting, energy conversion

摘要：

皮胶原作为一种来源于动物皮肤的天然生物质材料，具有良好的生物相容性、可降解性、低抗原性以及易功能化等优势，在柔性传感、电磁屏蔽、人体热管理和储能等柔性智能可穿戴领域展现出巨大的应用潜力。然而，未经改性的皮胶原存在热稳定性差、机械强度较低以及功能性不足等一些固有缺点，使其在柔性智能可穿戴领域应用受限。本文简要介绍了皮胶原的多层级结构和性能优势，论述了皮胶原的不同改性方法，包括物理交联、化学交联以及共混改性，重点综述了其作为柔性可穿戴材料在柔性传感、电磁屏蔽、人体热管理和超级电容器中的研究进展。最后，就皮胶原在柔性可穿戴电子领域的发展趋势进行了展望，指出开发具有极端环境稳定性、多功能集成型皮胶原柔性可穿戴电子材料，实现皮胶原基柔性智能可穿戴材料的按需定制将成为下一步的研究重点。

关键词: 皮胶原, 改性, 生物质材料, 柔性智能可穿戴, 能量收集, 能量转化