Fast healing conductive polymer composite based on carbon black and polyurethane containing disulfide bonds

Mai, Van-Dung; Nguyen, Dinh Cung Tien; Vu, Van-Phu; Lee, Soo-Hyoung

doi:10.1002/vnl.21871

Cited by 10 publications

(13 citation statements)

References 26 publications

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“…Such high performance is attributed to the dislocation and reformation of disulfide bonds and dynamic hydrogen bonds in the selfhealing polyurethane. 19,48,49 The bending and self-healing properties of the FISH-SC hold promise for wearable and flexible electronic applications of energy storage devices.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…We followed the previously described procedure for the fabrication of a PU/CB conductive composite film. 19 Briefly, 20.0 g of PTMEG-1000 was used after 2 h dehydrating under vacuum at 120 °C. Next, we added 13.6 g of IPDI and 0.1 g of DBTDL to the reactor and mechanically stirred under a N 2 atmosphere.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

“…This supercapacitor demonstrates excellent electrochemical healing capabilities based on a conductive composite electrode composed of polyur- film has been previously discussed in detail. 19 Herein, FISH-SC is constructed with two PU/CB conductive composite films that served as a self-healing current collector with a high electrical conductivity, assembled with a poly(3,4ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT/ PSS)−multiwalled carbon nanotube (MWNT) composite active layer sandwiching a gel electrolyte. The use of PU/CB as a current collector with high conductivity can lead to rapid electronic transport for electrodes as well as achieve high electrochemical performance.…”

Section: ■ Introductionmentioning

confidence: 99%

“…This supercapacitor demonstrates excellent electrochemical healing capabilities based on a conductive composite electrode composed of polyurethane and carbon black (PU/CB). The investigation of the mechanical and electrical properties of the PU/CB composite film has been previously discussed in detail . Herein, FISH-SC is constructed with two PU/CB conductive composite films that served as a self-healing current collector with a high electrical conductivity, assembled with a poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT/PSS)–multiwalled carbon nanotube (MWNT) composite active layer sandwiching a gel electrolyte.…”

Section: Introductionmentioning

confidence: 99%

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Flexible and Self-Healable Supercapacitor with High Capacitance Restoration

Mai

Nguyen

et al. 2022

ACS Appl. Energy Mater.

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This work reports on the fabrication of a flexible and self-healing high-performance quasi-solid-state supercapacitor that uses a conductive composite electrode. The supercapacitor employs an active layer poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT/PSS)–multiwalled carbon nanotube (MWNT)-coated polyurethane/carbon black composite electrode sandwiched with a poly(vinyl alcohol) (PVA)/H3PO4 gel electrolyte. The supercapacitor possesses the highest capacitance over 47 mF cm–2 and a high energy density from 5.8 to 1.7 μWh cm–2 with the corresponding power density changing from 0.13 to 0.61 W cm–2 at a current density from 1 to 8 mA cm–2. The supercapacitor can retain up to 94% of its electrochemical performance even after a fifth severing/healing cycle, and using capacitance retention, it maintains mechanical stability under various bending deformations. As a result, this self-healing supercapacitor features device-level toughness with more than 96% areal capacitance conserved, even under 180° bending (1.6 mm of bending radius). With its high durability and longevity against dynamic deformation and damage, our study demonstrates the high application potential of this supercapacitor in portable/wearable electronics.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Section: ■ Experimental Sectionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Flexible and Self-Healable Supercapacitor with High Capacitance Restoration

Mai

Nguyen

et al. 2022

ACS Appl. Energy Mater.

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“…Thus, it is not surprising that PU represent one of the most important polymer families, since their production is estimated to be more than 18 million tons per year, about 5 mass % of the total worldwide polymer production [ 19 , 20 ]. Among the polyurethane-based composites [ 21 ], those containing carbon materials are investigated for their mechanical, thermal, electrical, and piezoresistive properties [ 22 ], and many reports are available in scientific literature on PU composites based on CB, CNT, and GRM [ 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 ].…”

Section: Introductionmentioning

confidence: 99%

Polyhydroxylated Nanosized Graphite as Multifunctional Building Block for Polyurethanes

et al. 2022

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Polyurethane nanocomposites were prepared with a nanosized high surface area graphite (HSAG) functionalized on its edges with hydroxyl groups as a building block. Edge functionalization of HSAG was obtained through reaction with KOH. The addition of OH groups was demonstrated by means of infrared (FTIR) and thermogravimetric analysis (TGA), and the Boehm titration allowed estimation of a level of about 5.0 mmolOH/gHSAG. Results from wide-angle X-ray diffraction (WAXD) and Raman spectroscopy suggested that functionalization of the graphene layers occurred on the edges. The evaluation of the Hansen solubility parameters of G-OH revealed a substantial increase of δPand δH parameters with respect to HSAG. In line with these findings, homogeneous and stable dispersions of G-OH in a polyol were obtained. PU were prepared by mixing a dispersion of G-OH in cis-1,4-butenediol with hexamethylene diisocyanate. A model reaction between catechol, 1,4-butanediol, and hexamethylene diisocyanate demonstrated the reactivity of hydroxylated aromatic rings with isocyanate groups. PU-based G-OH, characterized with WAXD and differential scanning calorimetry (DSC), revealed lower Tg, higher Tc, Tm, and crystallinity than PU without G-OH. These results could be due to the higher flexibility of the polymer chains, likely a consequence of the dilution of the urethane bonds by the carbon substrate. Hence, G-OH allowed the preparation of PU with a larger temperature range between Tg and Tm, with potential positive impact on material applications. The model reaction between butylisocyanate and 1-butanol revealed that HSAG and G-OH promote efficient formation of the urethane bond, even in the absence of a catalyst. The effect of high surface area carbon on the nucleophilic oxygen attack to the isocyanate group can be hypothesized. The results here reported lead us to comment that a reactive nanosized sp2 carbon allotrope, such as G-OH, can be used as a multifunctional building block of PU. Indeed, G-OH is a comonomer of PU, a promoter of the polymerization reaction, and can definitely act as reinforcing filler by tuning its amount in the final nanocomposite leading to highly versatile materials. The larger temperature range between Tg and Tm, together with the presence of G-OH acting as a reinforcing agent, could allow the production of piezoresistive sensing, shape-memory PU with good mechanical features.

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Polyolefin elastomer/cyclic olefin copolymer/multi‐walled carbon nanotubes nanocomposites: Rheological, morphological, electrical and mechanical study

Saadatmand‐Navaran,

Azizi,

Ahmadjo

2024

Polymer Composites

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The subject of this research is a relatively detailed investigation of the rheological, morphological and electrical properties of nanocomposites based on polyolefin elastomer (POE), cyclic olefin copolymer (COC) and multi‐walled carbon nanotubes (MWCNTs). To formulate a mixture of two polymers (COC and POE), the melt mixing method was used and their morphology was studied by SEM technique and it was found that the morphology is of co‐continuous type. When the weight percentage ratio of COC was between 40 and 60, the desired morphology (co‐continuous) appeared. Interfacial tension calculations and TEM images proved that the nanotube particles were stabilized both within the phase of POE as well as at the interface of the two polymer phases. The rheological behavior was analyzed for composite samples containing 0–3 wt % MWCNT. The electrical and rheological percolation thresholds appeared at 1 and a 0.5 percent by weight of nanotube particles, respectively, which may be better to consider as related to the phenomenon of dual percolation. The highest conductivity was obtained for the nanocomposite containing 3% MWCNT. The results of mechanical tests also showed a strong upward trend of properties due to the addition of nanotube.Highlights The effect of COC content on the morphology of POE/COC blend was investigated. The Morphology for the POE/COC blend at low COC content was droplet‐matrix type. MWCNT has a greater tendency to be in the POE phase than COC. Rheological behavior strongly depended on the amount of nanotube particles. The highest conductivity was obtained for the sample containing 3% MWCNT.

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Fast healing conductive polymer composite based on carbon black and polyurethane containing disulfide bonds

Cited by 10 publications

References 26 publications

Flexible and Self-Healable Supercapacitor with High Capacitance Restoration

Flexible and Self-Healable Supercapacitor with High Capacitance Restoration

Polyhydroxylated Nanosized Graphite as Multifunctional Building Block for Polyurethanes

Polyolefin elastomer/cyclic olefin copolymer/multi‐walled carbon nanotubes nanocomposites: Rheological, morphological, electrical and mechanical study

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