In the progress of red‐winemaking, eco‐friendly, facile, and efficient reutilization of grape pomace is an important issue for sustainable industrial processes. In this manuscript, cellulose nanocrystals (CNCs) as extensive and expensive nanomaterials, are efficiently extracted from grape pomace by using deep eutectic solvents. Moreover, the obtained CNCs as the renewable reinforcing agent are successfully fabricated of self‐healing nanocomposite hydrogels. The self‐healing (93.5%) and mechanical strength (4.77 MPa) in hydrogels are outstandingly improved by the addition of functional CNCs, in which abundant carboxyl functional groups are modified by in situ esterification in the process of extracting CNCs. Importantly, these strain‐sensitive and self‐healing nanocomposite hydrogels can be further used as flexible strain sensors to detect human motion.

中文翻译：

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深共晶溶剂从葡萄果渣中提取纤维素纳米晶体及其在自修复纳米复合水凝胶中的应用

在进行红葡萄酒酿造的过程中，对果渣的生态友好，便捷和有效的再利用是可持续工业过程的重要问题。在此手稿中，纤维素深结晶（CNC）作为广泛而昂贵的纳米材料，是通过使用深共熔溶剂从葡萄果渣中有效提取的。此外，获得的作为可再生增强剂的CNCs是由自修复的纳米复合水凝胶成功制成的。添加功能性CNCs可以显着改善水凝胶的自愈性（93.5％）和机械强度（4.77 MPa），其中在提取CNCs的过程中通过原位酯化修饰丰富的羧基官能团。重要的，