Sugar-templated conductive polyurethane-polypyrrole sponges for wide-range force sensing

Wan, Yuqin; Ning, Qin; Wang, Yifan; Zhao, Qingbai; Wang, Qiang; Yuan, Peng; Wen, Qiang; Wei, Hao; Zhang, Xinyue; Ma, Ning

doi:10.1016/j.cej.2019.123103

Cited by 52 publications

(25 citation statements)

References 41 publications

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“…Unique micro-wrinkled structures, formed due to the incomplete swelling of the crosslinked elastomer during the controlled polymerization process. Interestingly, the micro-wrinkled sponge consumes lesser power consumption due to the reduced resistance afforded by the effective binding and uniformity of polypyrrole conductive networks [89]. Strain sensing sensitivity increments were obvious with pore size alterations, and has been evidenced in recent literature studies.…”

Section: Polypyrrole Sensorsmentioning

confidence: 70%

Recent Progress in Conducting Polymer Composite/Nanofiber-Based Strain and Pressure Sensors

et al. 2021

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The Conducting of polymers belongs to the class of polymers exhibiting excellence in electrical performances because of their intrinsic delocalized π- electrons and their tunability ranges from semi-conductive to metallic conductive regime. Conducting polymers and their composites serve greater functionality in the application of strain and pressure sensors, especially in yielding a better figure of merits, such as improved sensitivity, sensing range, durability, and mechanical robustness. The electrospinning process allows the formation of micro to nano-dimensional fibers with solution-processing attributes and offers an exciting aspect ratio by forming ultra-long fibrous structures. This review comprehensively covers the fundamentals of conducting polymers, sensor fabrication, working modes, and recent trends in achieving the sensitivity, wide-sensing range, reduced hysteresis, and durability of thin film, porous, and nanofibrous sensors. Furthermore, nanofiber and textile-based sensory device importance and its growth towards futuristic wearable electronics in a technological era was systematically reviewed to overcome the existing challenges.

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Section: Polypyrrole Sensorsmentioning

confidence: 70%

Recent Progress in Conducting Polymer Composite/Nanofiber-Based Strain and Pressure Sensors

et al. 2021

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“…The sugar templating process is a simple, inexpensive, and eco-friendly means of obtaining a porous structure [ 25 , 26 , 27 , 28 , 29 , 30 ]. Using sugar templating process, we can easily fabricate the porous structure sensor which has high flexibility and sensor performance [ 19 , 25 , 28 , 29 , 30 ]. A 15.6 mm × 15.6 mm × 10 mm sugar cube (BEKSUL, Seoul, Korea) as a mold was prepared and placed on a Petri dish.…”

Section: Methodsmentioning

confidence: 99%

Self-Restoring Capacitive Pressure Sensor Based on Three-Dimensional Porous Structure and Shape Memory Polymer

Park

Jung

et al. 2021

Polymers

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Highly flexible and compressible porous polyurethane (PU) structures have effectively been applied in capacitive pressure sensors because of the good elastic properties of the PU structures. However, PU porous structure-based pressure sensors have been limited in practical applications owing to their low durability during pressure cycling. Herein, we report a flexible pressure sensor based on a three-dimensional porous structure with notable durability at a compressive pressure of 500 kPa facilitated by the use of a shape memory polymer (SMP). The SMP porous structure was fabricated using a sugar templating process and capillary effect. The use of the SMP resulted in the maintenance of the sensing performance for 100 cycles at 500 kPa; the SMP can restore its original shape within 30 s of heating at 80 °C. The pressure sensor based on the SMP exhibited a higher sensitivity of 0.0223 kPa−1 than a typical PU-based sensor and displayed excellent sensing performance in terms of stability, response time, and hysteresis. Additionally, the proposed sensor was used to detect shoe insole pressures in real time and exhibited remarkable durability and motion differentiation.

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“…To date, many studies have chosen expensive conductive materials for flexible piezoresistive pressure sensors, such as carbon nanotubes, 12 Ag nanowires (AgNWs), 13 Au nanowires (AuNWs), 14 graphene 15 and reduced graphene, 16 in which AgNWs and AuNWs are relatively expensive as well as based on nonabundant metal. Various complicated process methods, including chemical vapor deposition (CVD) followed by etching, 17 freeze-drying plus carbonization, 18,19 and template combined with in situ polymerization process 20 have been used to construct various sophisticated microstructures for piezoresistive pressure sensors. For instance, Ma Yuxiao et al prepared graphene–amorphous carbon hierarchical foam (G–ACHF) by chemical vapor deposition (CVD), followed by etching process.…”

Section: Introductionmentioning

confidence: 99%

“… 19 Wan Yuqin et al fabricated a porous conductive polyurethane (PU) sponge force sensor based on in situ polymerization of pyrrole inside the porous polyurethane elastomer, in which porous polyurethane elastomer was prepared by a sugar-templated. 20 However, the fabrication of these aforementioned three-dimensional piezoresistive pressure sensors is often complicated and not easy to implement.…”

Section: Introductionmentioning

confidence: 99%

A flexible and highly sensitive pressure sensor based on three-dimensional electrospun carbon nanofibers

Cai

Gong

et al. 2021

RSC Adv.

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Sugar-templated conductive polyurethane-polypyrrole sponges for wide-range force sensing

Cited by 52 publications

References 41 publications

Recent Progress in Conducting Polymer Composite/Nanofiber-Based Strain and Pressure Sensors

Recent Progress in Conducting Polymer Composite/Nanofiber-Based Strain and Pressure Sensors

Self-Restoring Capacitive Pressure Sensor Based on Three-Dimensional Porous Structure and Shape Memory Polymer

A flexible and highly sensitive pressure sensor based on three-dimensional electrospun carbon nanofibers

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