Journal
JOURNAL OF MATERIALS CHEMISTRY B
Volume 8, Issue 22, Pages 4883-4889Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9tb02953b
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Funding
- National Key Research and Development Program of China [2017YFA0204600]
- Shanghai Pujiang Program [19PJ1409900]
- Japan Society for the Promotion of Science (JSPS) [17K06015]
- Grants-in-Aid for Scientific Research [17K06015] Funding Source: KAKEN
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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.
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