該工作報道了一種具有纖維結構的高強韌、環境適應性強的有機-水凝膠材料，可用于構筑人工皮膚。在課題組前期發展的化學交聯的靜電紡絲PAA-PVA纖維膜基礎上（Advanced Functional Materials, 2023, 33, 2213501），通過原位聚合引入聚苯胺（PANI）作為功能性組分，賦予有機-水凝膠導電性和應變敏感性。
該研究結果以Mechanically robust, stretchable and environmentally adaptable organohydrogels with cross-linked fibrous structure for sensory artificial skins為題發表在Composites Part A上。
文章鏈接：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、鄭博輝！
感謝各位審稿專家提出的寶貴意見和建議！
該工作得到了國家自然科學基金、陜西省自然科學基礎研究計劃重點項目、陜西省青年科技新星項目、陜西省高校青年杰出人才計劃、陜西省高校科協青年人才托舉計劃項目的資助。