Highly Stable and Flexible Pressure Sensors with Modified Multi-Walled Carbon Nanotube/Polymer Composites for Human Monitoring
A facile method for preparing an easy processing, repeatable and flexible pressure sensor was presented via the synthesis of modified multi-walled carbon nanotubes (m-MWNTs) and polyurethane (PU) films. The surface modification of multi-walled carbon nanotubes (MWNTs) simultaneously used a silane co...
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MDPI AG
2018-04-01
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| Series: | Sensors |
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| Online Access: | http://www.mdpi.com/1424-8220/18/5/1338 |
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| author | Yin He Yue Ming Wei Li Yafang Li Maoqi Wu Jinzhong Song Xiaojiu Li Hao Liu |
| author_facet | Yin He Yue Ming Wei Li Yafang Li Maoqi Wu Jinzhong Song Xiaojiu Li Hao Liu |
| author_sort | Yin He |
| collection | DOAJ |
| description | A facile method for preparing an easy processing, repeatable and flexible pressure sensor was presented via the synthesis of modified multi-walled carbon nanotubes (m-MWNTs) and polyurethane (PU) films. The surface modification of multi-walled carbon nanotubes (MWNTs) simultaneously used a silane coupling agent (KH550) and sodium dodecyl benzene sulfonate (SDBS) to improve the dispersibility and compatibility of the MWNTs in a polymer matrix. The electrical property and piezoresistive behavior of the m-MWNT/PU composites were compared with raw multi-walled carbon nanotube (raw MWNT)/PU composites. Under linear uniaxial pressure, the m-MWNT/PU composite exhibited 4.282%kPa−1 sensitivity within the pressure of 1 kPa. The nonlinear error, hysteresis error and repeatability error of the piezoresistivity of m-MWNT/PU decreased 9%, 16.72% and 54.95% relative to raw MWNT/PU respectively. Therefore, the piezoresistive response of m-MWNT/PU had better stability than that of raw MWNT/PU composites. The m-MWNT/PU sensors could be utilized in wearable devices for body movement detection, monitoring of respiration and pressure detection in garments. |
| first_indexed | 2024-04-11T20:40:55Z |
| format | Article |
| id | doaj.art-aede999f509b4b5b87f2d5daf633346a |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T20:40:55Z |
| publishDate | 2018-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-aede999f509b4b5b87f2d5daf633346a2022-12-22T04:04:13ZengMDPI AGSensors1424-82202018-04-01185133810.3390/s18051338s18051338Highly Stable and Flexible Pressure Sensors with Modified Multi-Walled Carbon Nanotube/Polymer Composites for Human MonitoringYin He0Yue Ming1Wei Li2Yafang Li3Maoqi Wu4Jinzhong Song5Xiaojiu Li6Hao Liu7School of Textiles, Tianjin Polytechnic University, Tianjin 300387, ChinaSchool of Textiles, Tianjin Polytechnic University, Tianjin 300387, ChinaSchool of Textiles, Tianjin Polytechnic University, Tianjin 300387, ChinaSchool of Textiles, Tianjin Polytechnic University, Tianjin 300387, ChinaSchool of Textiles, Tianjin Polytechnic University, Tianjin 300387, ChinaCollege of Biomedical Engineering & Instrument Science, Zhejiang University, Zhejiang 310027, ChinaSchool of Textiles, Tianjin Polytechnic University, Tianjin 300387, ChinaSchool of Textiles, Tianjin Polytechnic University, Tianjin 300387, ChinaA facile method for preparing an easy processing, repeatable and flexible pressure sensor was presented via the synthesis of modified multi-walled carbon nanotubes (m-MWNTs) and polyurethane (PU) films. The surface modification of multi-walled carbon nanotubes (MWNTs) simultaneously used a silane coupling agent (KH550) and sodium dodecyl benzene sulfonate (SDBS) to improve the dispersibility and compatibility of the MWNTs in a polymer matrix. The electrical property and piezoresistive behavior of the m-MWNT/PU composites were compared with raw multi-walled carbon nanotube (raw MWNT)/PU composites. Under linear uniaxial pressure, the m-MWNT/PU composite exhibited 4.282%kPa−1 sensitivity within the pressure of 1 kPa. The nonlinear error, hysteresis error and repeatability error of the piezoresistivity of m-MWNT/PU decreased 9%, 16.72% and 54.95% relative to raw MWNT/PU respectively. Therefore, the piezoresistive response of m-MWNT/PU had better stability than that of raw MWNT/PU composites. The m-MWNT/PU sensors could be utilized in wearable devices for body movement detection, monitoring of respiration and pressure detection in garments.http://www.mdpi.com/1424-8220/18/5/1338modified multi-walled carbon nanotubespolyurethane composite filmsflexible pressure sensorselectrical conductivitypiezoresistive property |
| spellingShingle | Yin He Yue Ming Wei Li Yafang Li Maoqi Wu Jinzhong Song Xiaojiu Li Hao Liu Highly Stable and Flexible Pressure Sensors with Modified Multi-Walled Carbon Nanotube/Polymer Composites for Human Monitoring Sensors modified multi-walled carbon nanotubes polyurethane composite films flexible pressure sensors electrical conductivity piezoresistive property |
| title | Highly Stable and Flexible Pressure Sensors with Modified Multi-Walled Carbon Nanotube/Polymer Composites for Human Monitoring |
| title_full | Highly Stable and Flexible Pressure Sensors with Modified Multi-Walled Carbon Nanotube/Polymer Composites for Human Monitoring |
| title_fullStr | Highly Stable and Flexible Pressure Sensors with Modified Multi-Walled Carbon Nanotube/Polymer Composites for Human Monitoring |
| title_full_unstemmed | Highly Stable and Flexible Pressure Sensors with Modified Multi-Walled Carbon Nanotube/Polymer Composites for Human Monitoring |
| title_short | Highly Stable and Flexible Pressure Sensors with Modified Multi-Walled Carbon Nanotube/Polymer Composites for Human Monitoring |
| title_sort | highly stable and flexible pressure sensors with modified multi walled carbon nanotube polymer composites for human monitoring |
| topic | modified multi-walled carbon nanotubes polyurethane composite films flexible pressure sensors electrical conductivity piezoresistive property |
| url | http://www.mdpi.com/1424-8220/18/5/1338 |
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