Conductive thermoplastic polyurethane composites with tunable piezoresistivity by modulating the filler dimensionality for flexible strain sensors

Zheng, Yanjun; Li, Yilong; Dai, Kun; Liu, Mengran; Zhou, Kangkang; Zheng, Guoqiang; Liu, Chuntai; Shen, Changyu

doi:10.1016/j.compositesa.2017.06.003

Cited by 164 publications

(116 citation statements)

References 49 publications

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“…There are three main reported strategies: (1) inltrating elastomers with conductive ller networks, 9,10,28,29 (2) synthesizing metal llers within elastomers 3,28,[30][31][32] and (3) implanting conductive llers into elastomers. 12,21,22,26,27,[33][34][35][36][37][38][39][40][41][42][43][44][45] The rst strategy generally requires particular fabrication techniques, such as surface treatment, to assist the combination of elastomers with conductive llers. Besides, conductive ller networks built on the surface or in the subsurface of the elastomers may be damaged under long-term high-level strain service duration due to the weak bonding between ller networks and elastomers.…”

Section: Introductionmentioning

confidence: 99%

“…In our previous work, it was found that the formation of segregated CNS networks at the interface of thermoplastic polyurethane (TPU), which is a widely used elastomer for exible sensors, 17,25,39,42,44,68,69 is able to signicantly reduce F C of the TPU/CNS composites in comparison with melt mixing. 70 Besides, the elastomer particle size plays an important role in controlling the ller network morphology in the segregated network structure, affecting the composite's electrical and mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

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Stretchable elastomer composites with segregated filler networks: effect of carbon nanofiller dimensionality

Sang

Manas‐Zloczower

2019

Nanoscale Adv.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Stretchable elastomer composites with segregated filler networks: effect of carbon nanofiller dimensionality

Sang

Manas‐Zloczower

2019

Nanoscale Adv.

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“…In general, CNTs tend to be entangled in polymer matrix . This entanglement phenomenon seriously affects the integrity of composites.…”

Section: Resultsmentioning

confidence: 99%

Enhanced Solid Particle Erosion Properties of Thermoplastic Polyurethane‐Carbon Nanotube Nanocomposites

Dong

Wang

Liu

et al. 2019

Macro Materials & Eng

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A co‐coagulation method combined with hot pressing technique is successfully applied to fabricate thermoplastic polyurethane (TPU) nanocomposites with different contents of carbon nanotubes (CNTs). Obviously, the mechanical and thermal properties of the nanocomposites are improved with increasing the CNT content. In addition, the existence of hydrogen bonding between CNTs and polymer matrix is demonstrated. Furthermore, the influences of impact parameters on solid particle erosion behavior are investigated systematically. The surface roughness and line roughness are also investigated to illustrate the mechanism of solid particle erosion. As elastic nanocomposites, the maximum and minimum erosion rate (ER) occur at 30° and 90°. The ER is relatively small when the impact velocity is at 10 m s−1, then is increased rapidly between 20 and 30 m s−1. As the size of impact particles increases to 300 µm, a rapid increase of ER occurs between 10 and 20 m s−1. All these results indicate CNTs improve the erosion resistance of TPU matrix.

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“…Stretchability can be very diverse, depending on elasticity of the substrates/matrix, the type of nanomaterials, structure of the sensors/conductors, and fabrication process. For nanocomposite‐based sensors containing nanomaterials of different dimensions (0D, 1D, or 2D), those based on 0D nanoparticles generally show higher sensitivity but lower stretchability . There are several mechanisms contributing to the piezoresistivity of nanocomposite‐based sensors, including disconnection mechanisms (e.g., loss of contact), tunneling resistance change due to interparticle distance changes, and intrinsic piezoresistivity of nanomaterials.…”

Section: Characteristics Of Stretchable Strain Sensors/conductorsmentioning

confidence: 99%

Strategies for Designing Stretchable Strain Sensors and Conductors

Peng

et al. 2020

Adv Materials Technologies

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Flexible and stretchable electronics are attracting tremendous attention for their enormous future potential in wearable technologies. Flexible and stretchable sensors and conductors are the key components of wearable devices for potential applications such as human motion detection, human health monitoring, and human–machine interfaces. One critical requirement for them is to show high level of wearability (bendability and stretchability) and meanwhile to retain their functionality and reliability under large mechanical deformation. To this end, a wide range of materials and structural designs are developed to construct these sensors and conductors. Here, the recent advances in the development of new piezoresistive materials and microstructural motifs that endow electronics with flexibility and stretchability are summarized. Challenges and future opportunities are discussed in terms of the multimodal and multidirectional sensing capabilities, the trade‐off between sensitivity/conductivity and stretchability, multifunctionality, linearity (multiple linear region phenomenon), and integration with flexible power and communication devices.

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Conductive thermoplastic polyurethane composites with tunable piezoresistivity by modulating the filler dimensionality for flexible strain sensors

Cited by 164 publications

References 49 publications

Stretchable elastomer composites with segregated filler networks: effect of carbon nanofiller dimensionality

Stretchable elastomer composites with segregated filler networks: effect of carbon nanofiller dimensionality

Enhanced Solid Particle Erosion Properties of Thermoplastic Polyurethane‐Carbon Nanotube Nanocomposites

Strategies for Designing Stretchable Strain Sensors and Conductors

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