Water enabled self-healing polymeric coating with reduced graphene oxide-reinforcement for sensors
(2021) In Sensors and Actuators Reports 3.- Abstract
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)... (More)
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.
(Less)
- author
- organization
- publishing date
- 2021-11
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Hardness, Layer-by-layer, Multifunctional coating, Reduced graphene oxide, Self-healing
- in
- Sensors and Actuators Reports
- volume
- 3
- article number
- 100059
- publisher
- Elsevier
- external identifiers
-
- scopus:85119597219
- ISSN
- 2666-0539
- DOI
- 10.1016/j.snr.2021.100059
- language
- English
- LU publication?
- yes
- additional info
- Publisher Copyright: © 2021 The Author(s)
- id
- 342ff723-2b47-4a93-b448-b48d94a57629
- date added to LUP
- 2021-12-08 22:04:22
- date last changed
- 2023-12-07 23:21:35
@article{342ff723-2b47-4a93-b448-b48d94a57629,
abstract = {{<p>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<sup>−8</sup> 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.</p>}},
author = {{Ly, Kally C.S. and Jimenez, Mawin J.M. and Cucatti, Silvia and Volpati, Diogo and Pereira-da-Silva, Marcelo A. and Shimizu, Flavio M. and Almeida, Tiago P. and Rodrigues, Varlei and da Silva, Jose Alberto F. and Alvarez, Fernando and Riul, Antonio}},
issn = {{2666-0539}},
keywords = {{Hardness; Layer-by-layer; Multifunctional coating; Reduced graphene oxide; Self-healing}},
language = {{eng}},
publisher = {{Elsevier}},
series = {{Sensors and Actuators Reports}},
title = {{Water enabled self-healing polymeric coating with reduced graphene oxide-reinforcement for sensors}},
url = {{http://dx.doi.org/10.1016/j.snr.2021.100059}},
doi = {{10.1016/j.snr.2021.100059}},
volume = {{3}},
year = {{2021}},
}