该工作报道了一种具有纤维结构的高强韧、环境适应性强的有机-水凝胶材料，可用于构筑人工皮肤。在课题组前期发展的化学交联的静电纺丝PAA-PVA纤维膜基础上（Advanced Functional Materials, 2023, 33, 2213501），通过原位聚合引入聚苯胺（PANI）作为功能性组分，赋予有机-水凝胶导电性和应变敏感性。

相关研究结果以Mechanically robust, stretchable and environmentally adaptable organohydrogels with cross-linked fibrous structure for sensory artificial skins为题发表在Composites Part A上。

文章链接：https://www.sciencedirect.com/science/article/pii/S1359835X24002719

摘要：Hydrogels are promising materials for fabricating sensory artificial skins (SASs), but their mechanical properties and environment adaptability are often limited, leading to restricted performances of SASs. In this work, mechanically robust, stretchable and environment adaptable organohydrogels with cross-linked fibrous structure are designed and constructed. The organohydrogels are prepared by introducing doped polyaniline (PANI) into cross-linked fibrous mats of poly(acrylic acid) (PAA) and poly(vinyl alcohol) (PVA). Cross-linked PAA-PVA mat works as skeleton to account for the mechanical robustness while PANI serves as the conductive component to achieve mechanosensing functionality. Due to the unique structure, the resultant organohydrogels, being denoted as PAA-PVA/PANI organohydrogels, exhibit high tensile strength (5.06 MPa), stretchability, fatigue resistance and excellent environment adaptability (anti-freezing, anti-drying and swelling resistance). SASs of such organohydrogels have achieved a gauge factor of 1.81, a sensing range of 0–70 %, a response time of 0.28 s and a reversible sensing in more than 2,000 cycles. In addition, SASs are further attempted in monitoring diverse human motions and physiological activities, such as joint bending, muscle motion and pulse. Overall, this work has provided promising soft materials for future SASs that work properly under complicated environmental conditions.

恭喜王珂萱、郑博辉！

感谢各位审稿专家提出的宝贵意见和建议！

该工作得到了国家自然科学基金、陕西省自然科学基础研究计划重点项目、陕西省青年科技新星项目、陕西省高校青年杰出人才计划、陕西省高校科协青年人才托举计划项目的资助。