Highly Efficient Self-Repairing Slippery Liquid-Infused Surface with Promising Anti-Icing and Anti-Fouling Performance
Highly Efficient Self-Repairing Slippery Liquid-Infused Surface with Promising Anti-Icing and Anti-Fouling Performance
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高效自修复光滑注液表面，具有良好的防冰和防污性能
DOI：
10.1021/acsami.1c09491
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发表时间：
2021
影响因子：
9.5
通讯作者：
Zhang Qinghua
中科院分区：
文献类型：
--
作者：
Rao Qingqing;Lu Yulin;Song Lina;Hou Yang;Zhan Xiaoli;Zhang Qinghua
智能光滑充液多孔表面在生物医学仪器和工业领域具有巨大的应用前景，引起了人们的广泛关注。然而，在制造耐用SLIPS方面仍然存在挑战。以聚氨酯膜和硅油为基材，制备了一种快速、高效的自修复滑面（SPU-60 M）。通过在聚合物主链中引入大量可逆二硫键和在聚合物链间引入氢键，该材料可在15 min内快速修复，修复效率达97.8%。在第10次切割愈合循环后，自愈合效率仍能保持在42.75%。值得注意的是，SPU-60 M不仅在环境中，而且在水下环境和超低温下都表现出出色的自修复能力。SPU-60 M在-15 °C时的结冰延迟时间（DT）可延长至1182 s，在-30 °C时的冰粘附强度仅为10.33 kPa。SPU-60 M对BSA的吸附量为2.41 μg/cm 2，对大肠杆菌的菌落数为41 × 104。这些发现提供了一种简便的方法来设计高效的自修复SLIPS与多功能。
Smart slippery liquid-infused porous surfaces (SLIPSs) have aroused remarkable attention owing to tremendous application foreground in biomedical instruments and industry. However, challenges still remain in fabricating durable SLIPSs. In this work, a fast and highly efficient self-repairing slippery surface (SPU-60M) was fabricated based on a polyurethane membrane and silicone oil. By introducing a great quantity of reversible disulfide bonds into the polymer backbone and hydrogen bonds in the polymer interchain, this SLIPS material could be quickly repaired in 15 min with 97.8% healing efficiency. Moreover, the self-healing efficiency could be maintained at 42.75% after the 10th cutting–healing cycle. Notably, SPU-60M showed excellent self-repairing ability not only in an ambient environment but also in an underwater environment and at ultralow temperatures. Besides, the icing delay time (DT) of SPU-60M could be prolonged to 1182 s at −15 °C, and the ice adhesion strength was only 10.33 kPa at −30 °C. In addition, SPU-60M had excellent anti-fouling performance with BSA adsorption of 2.41 μg/cm2andEscherichia coliCFU counts of 41 × 104. These findings provide a facile way to design highly efficient self-repairing SLIPSs with multifunctionality.