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Water enabled self-...
Water enabled self-healing polymeric coating with reduced graphene oxide-reinforcement for sensors
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- Ly, Kally C.S. (författare)
- University of Campinas
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- Jimenez, Mawin J.M. (författare)
- University of Campinas
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- Cucatti, Silvia (författare)
- University of Campinas
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- Volpati, Diogo (författare)
- Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
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- Pereira-da-Silva, Marcelo A. (författare)
- University of São Paulo,Centro Universitário Central Paulista (UNICEP)
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- Shimizu, Flavio M. (författare)
- University of Campinas
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- Almeida, Tiago P. (författare)
- University of Campinas,Delft University of Technology
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- Rodrigues, Varlei (författare)
- University of Campinas
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- da Silva, Jose Alberto F. (författare)
- University of Campinas
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- Alvarez, Fernando (författare)
- University of Campinas
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- Riul, Antonio (författare)
- University of Campinas
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(creator_code:org_t)
- Elsevier BV, 2021
- 2021
- Engelska.
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Ingår i: Sensors and Actuators Reports. - : Elsevier BV. - 2666-0539. ; 3
- Relaterad länk:
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http://dx.doi.org/10... (free)
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https://doi.org/10.1...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Intrinsic self-healing materials have received significant attention due to the characteristic recovery after damage properties through reversible dynamic covalent and non-covalent interactions. Furthermore, functional recovery with reliable mechanical properties are highly keen as protective coatings, specifically for devices and sensors vulnerable to abrasion in severe environments. Here, we present a functional hierarchical nanostructure capable of multiple micro-sized healings, with enhanced mechanical hardness due to the incorporation of graphene oxide (rGO) nanoplatelets. A self-healing multilayered nanocomposite formed by poly(ethylene imine) (PEI) and poly(acrylic acid) (PAA) was easily assembled by the layer-by-layer (LbL) technique. The addition of the rGO nanoplatelets in the LbL nanostructure resulted in a 13-fold increase in hardness (0.4 ± 0.1 GPa) when compared to the (PEI/PAA) architecture (0.03 ± 0.01 GPa). In addition, the nanocomposite presents an enhanced insulating electrical behavior (∼ 4.10−8 S/cm) despite the addition of the rGO nanoplatelets. Raman and Zeta Potential analysis indicated a possible wrapping of the rGOs by PEI, justifying the observed insulating electrical characteristics. The nanocomposite presents good hydrophobicity with a water contact angle of 136°, interesting to extend the lifetime and protect underlying layers from humidity, degradation, and encrustation. Therefore, we propose an attractive hydrophobic, electrically insulating, and mechanically resistant multifunctional coating for high-performance electronic interfaces from minor cuts and abrasions, dispensing maintainer intervention.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- Hardness
- Layer-by-layer
- Multifunctional coating
- Reduced graphene oxide
- Self-healing
Publikations- och innehållstyp
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- ref (ämneskategori)
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Till lärosätets databas
- Av författaren/redakt...
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Ly, Kally C.S.
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Jimenez, Mawin J ...
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Cucatti, Silvia
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Volpati, Diogo
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Pereira-da-Silva ...
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Shimizu, Flavio ...
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visa fler...
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Almeida, Tiago P ...
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Rodrigues, Varle ...
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da Silva, Jose A ...
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Alvarez, Fernand ...
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Riul, Antonio
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visa färre...
- Om ämnet
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- NATURVETENSKAP
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NATURVETENSKAP
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och Fysik
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och Den kondenserade ...
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Sensors and Actu ...
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Lunds universitet