Photo-induced healing of stretchable transparent electrodes based on thermoplastic polyurethane with embedded metallic nanowires

Kim, Kwang‐Seok; Choi, Su Bin; Kim, Dae Up; Lee, Cheul-Ro; Kim, Jong‐Woong

doi:10.1039/c8ta02979b

Cited by 43 publications

(29 citation statements)

References 36 publications

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“…The effect of using special additives can be seen in creating properties necessary to achieve flame retardance, antistatic, and radiation crosslinking ability [46]. Besides, exposing TPU to severe conditions results in significant structural changes depending on the structure and morphology; however, such changes deteriorate the physical properties [47].…”

Section: Thermoplastic Polyurethane Compositementioning

confidence: 99%

Investigating Physio-Thermo-Mechanical Properties of Polyurethane and Thermoplastics Nanocomposite in Various Applications

et al. 2021

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The effect of the soft and hard polyurethane (PU) segments caused by the hydrogen link in phase-separation kinetics was studied to investigate the morphological annealing of PU and thermoplastic polyurethane (TPU). The significance of the segmented PUs is to achieve enough stability for further applications in biomedical and environmental fields. In addition, other research focuses on widening the plastic features and adjusting the PU–polyimide ratio to create elastomer of the poly(urethane-imide). Regarding TPU- and PU-nanocomposite, numerous studies investigated the incorporation of inorganic nanofillers such as carbon or clay to incorporating TPU-nanocomposite in several applications. Additionally, the complete exfoliation was observed up to 5% and 3% of TPU–clay modified with 12 amino lauric acid and benzidine, respectively. PU-nanocomposite of 5 wt.% Cloisite®30B showed an increase in modulus and tensile strength by 110% and 160%, respectively. However, the nanocomposite PU-0.5 wt.% Carbone Nanotubes (CNTs) show an increase in the tensile modulus by 30% to 90% for blown and flat films, respectively. Coating PU influences stress-strain behavior because of the interaction between the soft segment and physical crosslinkers. The thermophysical properties of the TPU matrix have shown two glass transition temperatures (Tg’s) corresponding to the soft and the hard segment. Adding a small amount of tethered clay shifts Tg for both segments by 44 °C and 13 °C, respectively, while adding clay from 1 to 5 wt.% results in increasing the thermal stability of TPU composite from 12 to 34 °C, respectively. The differential scanning calorimetry (DSC) was used to investigate the phase structure of PU dispersion, showing an increase in thermal stability, solubility, and flexibility. Regarding the electrical properties, the maximum piezoresistivity (10 S/m) of 7.4 wt.% MWCNT was enhanced by 92.92%. The chemical structure of the PU–CNT composite has shown a degree of agglomeration under disruption of the sp2 carbon structure. However, with extended graphene loading to 5.7 wt.%, piezoresistivity could hit 10-1 S/m, less than 100 times that of PU. In addition to electrical properties, the acoustic behavior of MWCNT (0.35 wt.%)/SiO2 (0.2 wt.%)/PU has shown sound absorption of 80 dB compared to the PU foam sample. Other nanofillers, such as SiO2, TiO2, ZnO, Al2O3, were studied showing an improvement in the thermal stability of the polymer and enhancing scratch and abrasion resistance.

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Section: Thermoplastic Polyurethane Compositementioning

confidence: 99%

Investigating Physio-Thermo-Mechanical Properties of Polyurethane and Thermoplastics Nanocomposite in Various Applications

et al. 2021

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“…In recent years, graphene oxide sheets as the functional fillers for polymer have aroused the interest of researchers [6,24,28,36,42,43]. However, most of them only paid attention to the improvement of the mechanical and thermal properties of composite materials.…”

Section: Near-infrared Photothermal Response Of Go-tpu Flexible Filmsmentioning

confidence: 99%

“…Because it can not only extend the life cycle of materials, increase the reuse rate of materials, reduce maintenance costs, but also play an extremely important role in saving resources and reducing energy consumption. In order to endow materials with self-healing performance, there are many methods, including introducing microcapsules or microvascular structures which contain repair agents [19], using the reversibility of molecular bonds [10,11,[20][21][22], and intermolecular forces [23,24], and so on [25][26][27][28]. Although these methods can endow materials with…”

Section: Introductionmentioning

confidence: 99%

High Performance of Thermoplastic Polyurethane-Graphene Oxide Self-Healing Composite Film

Zhou

Wang

2021

Coatings

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Graphene oxide (GO) sheets were dispersed into N, N-dimethylformamide (DMF) solution by ultrasonication and then mixed with thermoplastic polyurethane (TPU) solution uniformly, and further fabricated to GO-TPU film by casting process. The thermal properties, infrared photothermal response, and self-healing performance of the GO-TPU film were systematically investigated. The experimental results demonstrate that the thermal conductivity of GO-TPU film with 4 wt % GO and the initial concentration of 20 wt % TPU is 0.3719 W·m−1·K−1, which is 83.8% increase compared to pure TPU. The GO-TPU film has excellent infrared light-to-heat conversion efficiency. The infrared light-to-heat conversion efficiency of the GO-TPU film with 7 wt % GO and the initial concentration of 20 wt % TPU reaches the maximum, and the temperature increased by 63% compared to pure TPU, reaching 165.6 °C. The scratches on the GO-TPU composite film can be completely healed after being irradiated by infrared light for 10 min, which shows that the GO-TPU composite film has good self-healing properties.

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“…Therefore, the design of highly stretchable and self-healable electronic storage devices is very significant for modern flexible and implantable electronics [14][15][16]. However, compared with the extensive and substantial research on multifunctional electrodes, fewer relevant studies on indispensable multifunctional electrolytes with stretchability and self-healability have been performed [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Stretchable, self-healable, and reprocessable chemical cross-linked ionogels electrolytes based on gelatin for flexible supercapacitors

et al. 2019

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A novel chemical cross-linked ionogels with excellent self-healability, stretchability, and reprocessability based on gelatin have been synthesized via the Schiff base reaction in ionic liquid of 1-ethyl-3-methylimidazolium acetate (EMIMAc). Rheological measurements revealed that the plateaus modulus in storage modulus increases with increase in the content of gelatin. These ionogels displayed good thermal mechanical stability, and the chemical networks were not destroyed even at temperature up to 140°C. High stretchability was obtained and the elongation at break for the as-prepared ionogel could even reach 368.6%. Importantly, the prepared ionogels showed excellent self-healability and reprocessability. Remarkably, the ionogels exhibited superior ionic conductivity and room temperature ionic conductivity was higher than 1.0 9 10-3 S/cm. Furthermore, supercapacitors with this ionogel electrolyte showed temperaturedependent specific capacitance and remarkable flexible performance. Therefore, the as-prepared self-healable and reprocessable ionogels from the nature of gelatin, with highly ionic conductivity and stretchability, could be considered an excellent electrolyte candidate for various next-generation stretchable electronics.

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Photo-induced healing of stretchable transparent electrodes based on thermoplastic polyurethane with embedded metallic nanowires

Abstract: A stretchable and photo-induced healable transparent electrode is achieved by using a combination of silver nanowires and thermoplastic polyurethane.

Cited by 43 publications

References 36 publications

Investigating Physio-Thermo-Mechanical Properties of Polyurethane and Thermoplastics Nanocomposite in Various Applications

Investigating Physio-Thermo-Mechanical Properties of Polyurethane and Thermoplastics Nanocomposite in Various Applications

High Performance of Thermoplastic Polyurethane-Graphene Oxide Self-Healing Composite Film

Stretchable, self-healable, and reprocessable chemical cross-linked ionogels electrolytes based on gelatin for flexible supercapacitors

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