Superhydrophobic highly flexible doubly cross-linked aerogel/carbon nanotube composites as strain/pressure sensors
Superhydrophobic highly flexible doubly cross-linked aerogel/carbon nanotube composites as strain/pressure sensors
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DOI：
10.1039/c9tb02953b
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发表时间：
2020-06-14
影响因子：
7
通讯作者：
Nakanishi, Kazuki
中科院分区：
文献类型：
--
作者：
Zu, Guoqing;Wang, Xiaodong;Nakanishi, Kazuki
我们报道了一种基于双交联气凝胶和碳纳米管的新型超疏水高柔性应变/压力传感复合材料。分别以乙烯基甲基二甲氧基硅烷和乙烯基二甲基甲氧基硅烷为原料，通过自由基聚合，得到聚乙烯基甲基二甲氧基硅烷和聚乙烯基二甲基甲氧基硅烷的水解共缩聚反应，并加入碳纳米管，制备了DCL气凝胶/碳纳米管复合材料。得益于气凝胶和导电碳纳米管灵活的富甲基DCL结构，所得到的DCL气凝胶/碳纳米管复合材料结合了超疏水、高压缩、高弯曲、高弹性以及应变和压敏导电性能。我们证明，该复合材料可以作为高性能的应变/压力传感器用于检测动脉脉搏波和关节弯曲，具有高灵敏度和高耐湿性。
We report novel superhydrophobic highly flexible composites based on a doubly cross-linked (DCL) aerogel and carbon nanotubes (CNTs) for strain/pressure sensing. The DCL aerogel/CNT composite is prepared by radical polymerization of vinylmethyldimethoxysilane and vinyldimethylmethoxysilane, respectively, followed by hydrolytic co-polycondensation of the obtained polyvinylmethyldimethoxysilane and polyvinyldimethylmethoxysilane, combined with the incorporation of CNTs. Benefiting from the flexible methyl-rich DCL structure of the aerogel and conductive CNTs, the resultant DCL aerogel/CNT composite combines superhydrophobicity, high compressibility, high bendability, high elasticity, and strain- and pressure-sensitive conductivity. We demonstrate that the composite can be applied as a high-performance strain/pressure sensor for the detection of arterial pulse waves and joint bending with high sensitivity and high durability against humidity.