Graphene oxide coated with poly(butyl acrylate) and its impact on the physical and vibration sensing properties of PVDF-based composites

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F21%3A63546118" target="_blank" >RIV/70883521:28110/21:63546118 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/70883521:28610/21:63546118

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Graphene oxide coated with poly(butyl acrylate) and its impact on the physical and vibration sensing properties of PVDF-based composites

Popis výsledku v původním jazyce

Vibration sensing elements are very important devices for structural healts monitoring (SHM) enabling permanent or periodic checking of the various electronic or other industrial devices. The main limitation of them is high price and small size, due to the fact that they are mainly composed of piezoceramic part those provide sufficient vibration sensing capability. Therefore. the utilization of the larger layers fabricated from the piezo-electric polymers seems to be interesting approach of such SHM. ln this case. well-known polymer poly(vinylidene fluoride) (PVDF) can be effectively applied. However, PVDF is not initially piezo-electric and have to be modified to provide some signal from mechanical vibrations. Therefore. in our present study we have used graphene oxide (GO) particles as a source of additional dipoles and mixed with PVDF. However, the hydrophilic nature of GO and hydrophobic of PVDF need to be solved to significantly improved the proper dispergation of the GO. We have coated the GO particles with poly(butyl acrylate) polymer brushes (GOPBA) and further mixed with PVDF us&apos;ing microcompounding machine. The layers with thickness of 0.5 mm were compressed and evaluated from the physical as well as vibration sensing capabilities. Finally, it was observed that improved compatibility between the GOPBA particles provide better development of the crystalline phase, sufficient mechanical properties and consequently significantly enhanced vibration sensihg capabilities investigated using d33 piezoelectric constant.

Název v anglickém jazyce

Graphene oxide coated with poly(butyl acrylate) and its impact on the physical and vibration sensing properties of PVDF-based composites

Popis výsledku anglicky

Vibration sensing elements are very important devices for structural healts monitoring (SHM) enabling permanent or periodic checking of the various electronic or other industrial devices. The main limitation of them is high price and small size, due to the fact that they are mainly composed of piezoceramic part those provide sufficient vibration sensing capability. Therefore. the utilization of the larger layers fabricated from the piezo-electric polymers seems to be interesting approach of such SHM. ln this case. well-known polymer poly(vinylidene fluoride) (PVDF) can be effectively applied. However, PVDF is not initially piezo-electric and have to be modified to provide some signal from mechanical vibrations. Therefore. in our present study we have used graphene oxide (GO) particles as a source of additional dipoles and mixed with PVDF. However, the hydrophilic nature of GO and hydrophobic of PVDF need to be solved to significantly improved the proper dispergation of the GO. We have coated the GO particles with poly(butyl acrylate) polymer brushes (GOPBA) and further mixed with PVDF us&apos;ing microcompounding machine. The layers with thickness of 0.5 mm were compressed and evaluated from the physical as well as vibration sensing capabilities. Finally, it was observed that improved compatibility between the GOPBA particles provide better development of the crystalline phase, sufficient mechanical properties and consequently significantly enhanced vibration sensihg capabilities investigated using d33 piezoelectric constant.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

10404 - Polymer science

Projekt

<a href="/cs/project/GA19-17457S" target="_blank" >GA19-17457S: Výroba a analýza flexibilních piezoelektrických vrstev pro chytré strojírenství</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů