Water enabled self-healing polymeric coating with reduced graphene oxide-reinforcement for sensors

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 coatin...

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Autores principales: Kally C.S. Ly, Mawin J.M. Jimenez, Silvia Cucatti, Diogo Volpati, Marcelo A. Pereira-da-Silva, Flavio M. Shimizu, Tiago P. Almeida, Varlei Rodrigues, Jose Alberto F. da Silva, Fernando Alvarez, Antonio Riul, Jr
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Publicado: Elsevier 2021
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spelling oai:doaj.org-article:eeec6f107bbb4b3591329fafd82c4f982021-11-12T04:47:35ZWater enabled self-healing polymeric coating with reduced graphene oxide-reinforcement for sensors2666-053910.1016/j.snr.2021.100059https://doaj.org/article/eeec6f107bbb4b3591329fafd82c4f982021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2666053921000345https://doaj.org/toc/2666-0539Intrinsic 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.Kally C.S. LyMawin J.M. JimenezSilvia CucattiDiogo VolpatiMarcelo A. Pereira-da-SilvaFlavio M. ShimizuTiago P. AlmeidaVarlei RodriguesJose Alberto F. da SilvaFernando AlvarezAntonio Riul, JrElsevierarticleSelf-healingMultifunctional coatingLayer-by-layerReduced graphene oxideHardnessInstruments and machinesQA71-90ENSensors and Actuators Reports, Vol 3, Iss , Pp 100059- (2021)
institution DOAJ
collection DOAJ
language EN
topic Self-healing
Multifunctional coating
Layer-by-layer
Reduced graphene oxide
Hardness
Instruments and machines
QA71-90
spellingShingle Self-healing
Multifunctional coating
Layer-by-layer
Reduced graphene oxide
Hardness
Instruments and machines
QA71-90
Kally C.S. Ly
Mawin J.M. Jimenez
Silvia Cucatti
Diogo Volpati
Marcelo A. Pereira-da-Silva
Flavio M. Shimizu
Tiago P. Almeida
Varlei Rodrigues
Jose Alberto F. da Silva
Fernando Alvarez
Antonio Riul, Jr
Water enabled self-healing polymeric coating with reduced graphene oxide-reinforcement for sensors
description 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.
format article
author Kally C.S. Ly
Mawin J.M. Jimenez
Silvia Cucatti
Diogo Volpati
Marcelo A. Pereira-da-Silva
Flavio M. Shimizu
Tiago P. Almeida
Varlei Rodrigues
Jose Alberto F. da Silva
Fernando Alvarez
Antonio Riul, Jr
author_facet Kally C.S. Ly
Mawin J.M. Jimenez
Silvia Cucatti
Diogo Volpati
Marcelo A. Pereira-da-Silva
Flavio M. Shimizu
Tiago P. Almeida
Varlei Rodrigues
Jose Alberto F. da Silva
Fernando Alvarez
Antonio Riul, Jr
author_sort Kally C.S. Ly
title Water enabled self-healing polymeric coating with reduced graphene oxide-reinforcement for sensors
title_short Water enabled self-healing polymeric coating with reduced graphene oxide-reinforcement for sensors
title_full Water enabled self-healing polymeric coating with reduced graphene oxide-reinforcement for sensors
title_fullStr Water enabled self-healing polymeric coating with reduced graphene oxide-reinforcement for sensors
title_full_unstemmed Water enabled self-healing polymeric coating with reduced graphene oxide-reinforcement for sensors
title_sort water enabled self-healing polymeric coating with reduced graphene oxide-reinforcement for sensors
publisher Elsevier
publishDate 2021
url https://doaj.org/article/eeec6f107bbb4b3591329fafd82c4f98
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