In-situ polymerization of PPy/cellulose composite sponge with high elasticity and conductivity for the application of pressure sensor

Luo, Mengying; Li, Mufang; Li, Yuqin; Chang, Kangqi; Liu, Ke; Liu, Qiongzhen; Wang, Yuedan; Lu, Zhentan; Liu, Xue; Wang, Dong

doi:10.1016/j.coco.2017.10.001

Cited by 48 publications

(27 citation statements)

References 20 publications

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“…The optimized condition of preparation returned samples with conductivity of 10 −5 S/cm . The direct comparison with literature reveals that conductivity of our samples represents an important topic to be considered in the project of new devices, as their electrical properties represent extremely relevant parameters for development of pressure sensors . Based on this information, we can consider that CNT incorporation is critically important for use as pressure sensor.…”

Section: Resultsmentioning

confidence: 78%

Toward flexible and antibacterial piezoresistive porous devices for wound dressing and motion detectors

Silva

Araújo

Alcaraz-Espinoza

et al. 2018

J Polym Sci B Polym Phys

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Wearable and antibacterial porous devices are promising new multifunctional materials with a wide range of applications in wound dressing and human motion monitoring systems. The deposition of carbon nanotubes and polypyrrole coating on conventional elastomers (polyurethane) is a singlestep procedure that results in a low-cost, highly conductive, and flexible piezoresistive material with pressure sensitivity of 0.09 kPa 21 , Gauge Factor of 210.3, high stability in response to different mechanical efforts and reversible netlike microcracks formation under moderate stretching deformation. The resulting porous material provides direct detection of simple movements from human joints (knee, finger, and elbow) and intrinsic antibacterial activity against Staphylococcus aureus, Klebsiella pneumoniae, and Escherichia coli.

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Section: Resultsmentioning

confidence: 78%

Toward flexible and antibacterial piezoresistive porous devices for wound dressing and motion detectors

Silva

Araújo

Alcaraz-Espinoza

et al. 2018

J Polym Sci B Polym Phys

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“…The peak intensity, which corresponds to the relaxation temperature (T α ), related to the glass transition temperature of PBAT reduces as the amount of conductive filler increases. These variations in the magnitude of the loss tangent are related to the incorporation of Mt-PPy or PPy, which reduces the the peak areas of the absorption bands at 1710 (H-C=O) and 1730 (free C=O) (I 1710 /I 1730 ) 5 . Table 1 shows the area under the peak related to the C=O groups (hydrogen bonded C=O (A 1710 ) and free C=O (A 1730 )) and the ratio between them.…”

Section: Resultsmentioning

confidence: 99%

“…In recent years, the development of electrically conducting polymer composites (ECPC) for pressure sensor applications has increased significantly. This increase is due to their flexibility, low cost, easy to manufacture and the electrical conductivity can be changed by applying a compressive force [1][2][3][4][5][6][7][8][9] . These materials are composed of an insulating polymer matrix and a dispersed phase of intrinsically conducting polymer (ICP) [10][11][12][13][14] , such as polypyrrole (PPy) or polyaniline (PAni), or carbonaceous fillers, such as carbon black [15][16][17] and graphite 18 .…”

Section: Introductionmentioning

confidence: 99%

“…These materials are composed of an insulating polymer matrix and a dispersed phase of intrinsically conducting polymer (ICP) [10][11][12][13][14] , such as polypyrrole (PPy) or polyaniline (PAni), or carbonaceous fillers, such as carbon black [15][16][17] and graphite 18 . Among available conducting fillers, several works in the literature have reported the use of conducting polymers, especially PPy, for sensing applications 1,5,8,9,[19][20][21][22][23][24][25][26][27][28] . Merlini et al described the development of poly(vinylidene fluoride) (PVDF) / polypyrrole (PPy) blends, and the maximum sensitivity was obtained for a blend with 9 wt% PPy.…”

Section: Introductionmentioning

confidence: 99%

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Development of Poly (butylene adipate-co-terephthalate) Filled with Montmorillonite-Polypyrrole for Pressure Sensor Applications

et al. 2019

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A novel pressure sensing material composed of poly (butylene adipate-co-terephthalate) (PBAT) and montmorillonite-polypyrrole (Mt-PPy) was prepared using melt mixing and injection molding. The structure and properties of the PBAT/Mt-PPy composites were evaluated and compared with those of the PBAT/PPy blends. The PBAT/Mt-PPy displays a very sharp insulator-conductor transition and its percolation threshold was reached at 6.5 wt% of Mt-PPy, which was lower than that for PBAT/ PPy (11.0 wt% of PPy). The transmission electron microscopy analysis shows that Mt-PPy displays a high aspect ratio and was better distributed and dispersed into PBAT compared to PPy. PBAT/Mt-PPy exhibits a decrease in the electrical resistivity with an applied compressive stress due to the formation of new conducting pathways. The electromechanical response was dependent on Mt-PPy and the maximum sensitivity was observed for the composite containing 10 wt% of Mt-PPy. In this system, the electrical resistivity drops from 9 x 10 6 to 2 x 10 6 Ω cm when a compressive stress of 0.25 MPa was applied. The electrical resistivity changes with applied compressive stress, the reproducibility and the reversibility makes PBAT/Mt-PPy a suitable material for the development of pressure sensors.

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“…Polypyrrole (PPy) is also an environmentally stable and biocompatible ECP, with a high electrical conductivity in the range 40 S/cm to 50 S/cm [156,157], and with a mechanical flexibility and solubility that makes it easy to apply on fibre surfaces through bathing [158][159][160][161], electrodeposition [161], or in-situ polymerisation [70,157,[162][163][164]. PPy has been used as conductive coating on carbon fibres and PDMS-carbon fibre bundles via electropolymerisation to create a fibre-based e-skin capable of self charge through triboelectrification effect [164].…”

Section: Organic Conductorsmentioning

confidence: 99%

Flexible Sensors—From Materials to Applications

et al. 2019

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Flexible sensors have the potential to be seamlessly applied to soft and irregularly shaped surfaces such as the human skin or textile fabrics. This benefits conformability dependant applications including smart tattoos, artificial skins and soft robotics. Consequently, materials and structures for innovative flexible sensors, as well as their integration into systems, continue to be in the spotlight of research. This review outlines the current state of flexible sensor technologies and the impact of material developments on this field. Special attention is given to strain, temperature, chemical, light and electropotential sensors, as well as their respective applications.

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In-situ polymerization of PPy/cellulose composite sponge with high elasticity and conductivity for the application of pressure sensor

Cited by 48 publications

References 20 publications

Toward flexible and antibacterial piezoresistive porous devices for wound dressing and motion detectors

Toward flexible and antibacterial piezoresistive porous devices for wound dressing and motion detectors

Development of Poly (butylene adipate-co-terephthalate) Filled with Montmorillonite-Polypyrrole for Pressure Sensor Applications

Flexible Sensors—From Materials to Applications

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