A stretchable and super-robust graphene superhydrophobic composite for electromechanical sensor application†,Journal of Materials Chemistry A

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A stretchable and super-robust graphene superhydrophobic composite for electromechanical sensor application†
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2018-04-27 00:00:00 , DOI: 10.1039/c8ta01923a
Peng Wang _{1,

2,

3,

4} , Bo Sun _{1,

2,

3,

4} , Ying Liang _{2,

3,

4,

5} , Huilong Han _{1,

2,

3,

4} , Xiaoliang Fan _{1,

2,

3,

4} , Wenliang Wang _{1,

2,

3,

4} , Zhan Yang _{4,

6,

7,

8}

Affiliation

Stretchable superhydrophobic materials are of potential interest for next-generation multi-functional haptic technologies particularly suited for wearable device and artificial skin applications. However, the practical applications of stretchable superhydrophobic materials are hindered by some issues, such as low mechanical robustness, harmful chemicals, etc. Here, we partially embedded perfluorosilane-coated graphene into thermoplastic polyurethane (TPU) by a dissolution and resolidification method. Due to the exceptional physical properties of graphene, the resulting nanocomposites could maintain their superhydrophobicity after toleration of strain up to 400%, man-made destruction by hands or sandpapers, pollution by oil, immersion in various corrosive liquids, and heat treatment at 150 °C for 24 h. It should be noted that even under an ultra-large load of 2 kg (32.5 kPa pressure), this graphene composite could withstand the abrasion by sandpaper for 20.00 m without losing superhydrophobicity. More remarkably, the electrical resistance of this graphene superhydrophobic composite is sensitive to material deformation, and can be directly applied to gloves for real-time detection of human motions.

中文翻译：

可伸缩且超强固性的石墨烯超疏水复合材料，用于机电传感器应用†

可拉伸的超疏水材料是下一代多功能触觉技术的潜在利益，特别适合可穿戴设备和人造皮肤应用。但是，可拉伸的超疏水材料的实际应用受到一些问题的阻碍，例如低机械强度，有害化学物质等。在这里，我们通过溶解和再固化方法将全氟硅烷涂层的石墨烯部分嵌入到热塑性聚氨酯（TPU）中。由于石墨烯的出色物理性能，所得纳米复合材料在承受高达400％的应变，手或砂纸造成的人为破坏，油污，浸入各种腐蚀性液体以及在150°C的热处理后，可以保持其超疏水性C持续24小时。应该注意的是，即使在2 kg（32.5 kPa压力）的超大载荷下，该石墨烯复合材料也能在不损失超疏水性的情况下承受20.00 m的砂纸磨损。更显着的是，这种石墨烯超疏水复合材料的电阻对材料变形敏感，可以直接应用于手套以实时检测人体运动。

更新日期：2018-04-27

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