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Gong T, Guo JX, Shao HQ, Jia J, Ke K, Bao RY, Yang W. Linear Strain Sensors via a Spatial Heteromodulus Tricontinuous Structure Design for High-Resolution Recording of Snoring Breath. ACS APPLIED MATERIALS & INTERFACES 2023; 15:56337-56346. [PMID: 37975857 DOI: 10.1021/acsami.3c14672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
Porous conductive elastomer composites are very attractive for designing flexible and air-permeable mechanical sensors for healthcare, while it is challenging to achieve a linear and sensitive electromechanical response over a wide strain range for high-resolution recording of physiological activities and body motions. Here, a scalable strategy is developed to construct porous elastomer composites with a bamboo-shaped heteromodulus microstructure in the pores for the fabrication of linear stretchable strain sensors. Such a spatial heteromodulus microstructure is fabricated via phase separation and selective location of high-modulus phase during melt compounding of elastomers and thermoplastics, together with green etching of the water-soluble plastic in the tricontinuous elastomer composites. The bamboo-shaped heteromodulus microstructure is constructed on the pore struts via the fracture of a high-modulus polymer self-assembled on the pore surface and relaxation recovery of the elastomer matrix after prestretching, which blocks the propagation of cut-through microcracks upon stretching. The composites with super low resistance after in situ growth of silver nanoparticles sustain up to 110% tensile strain with a linear and sensitive electromechanical response, demonstrating potential applications in discriminating respiration status and monitoring snoring breath. This work unveils a new approach to fabricate high-performance air-permeable strain sensors in a simple and scalable way.
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Affiliation(s)
- Tao Gong
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, Sichuan, China
| | - Jia-Xing Guo
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, Sichuan, China
| | - He-Qing Shao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, Sichuan, China
| | - Jin Jia
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, Sichuan, China
| | - Kai Ke
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, Sichuan, China
| | - Rui-Ying Bao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, Sichuan, China
| | - Wei Yang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, Sichuan, China
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Tuning the dual- and triple-shape-memory effect of thermoplastic polyurethane/polylactic acid/poly(propylene carbonate) ternary blends via morphology control. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124546] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Zhang H, Wei X, Qu JP. Microstructure evolution and mechanism of PLA/PVDF hybrid dielectrics fabricated under elongational flow. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123719] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Yang Z, Chen Y, Liu X, Yin B, Yang M. Fabrication of poly(ε‐caprolactone) (
PCL)
/poly(propylene carbonate) (
PPC)
/ethylene‐α‐octene block copolymer (
OBC)
triple shape memory blends with cycling performance by constructing a co‐continuous phase morphology. POLYM INT 2020. [DOI: 10.1002/pi.6005] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Zi‐xuan Yang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials EngineeringSichuan University Chengdu People's Republic of China
| | - Yi Chen
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials EngineeringSichuan University Chengdu People's Republic of China
| | - Xu Liu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials EngineeringSichuan University Chengdu People's Republic of China
| | - Bo Yin
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials EngineeringSichuan University Chengdu People's Republic of China
| | - Ming‐bo Yang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials EngineeringSichuan University Chengdu People's Republic of China
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Effect of Olefin-based Compatibilizers on the Formation of Cocontinuous Structure in Immiscible HDPE/iPP Blends. CHINESE JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1007/s10118-020-2433-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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6
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Tuning PVDF/PS/HDPE polymer blends to tri-continuous morphology by grafted copolymers as the compatibilizers. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.02.055] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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