Rheological Properties of PVDF-GO Composites and Their Vibration Sensing Capability

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F19%3A63524208" target="_blank" >RIV/70883521:28110/19:63524208 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/70883521:28610/19:63524208

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Rheological Properties of PVDF-GO Composites and Their Vibration Sensing Capability

Popis výsledku v původním jazyce

Poly(vinylidene fluoride) (PVDF) is polymer attracting the attention of the researchers last two decades, due to its huge industrial potential. PVDF can be used for various applications and forms, such as solution casted film, extruded sheet or in form of fibers prepared by various techniques i.e. (electrospinning, melt-blown technique or melt-electrowriting technique). These unique properties can serve various applications like filtration membranes or actuating sheets or films [1]. PVDF as a semi-crystalline polymer as provide unique behaviour called piezoelectric effect. The sample can change its dimensions upon when electric voltage is applied reversibly or if the sample is mechanically deformed, certain electric output can be achieved. However, PVDF forms primarily  crystalline phase, which is unfortunately non-piezoelectric. With the help of additional treatment (polling, stretching, filler addition or combination of all mentioned approaches) the electro-active  crystalline phase can be formed [2]. However, in order to provide the system with good processing parameters, the rheological properties of neat PVDF polymer melt as well as its composites with graphene oxide (GO) is very important factor. Therefore, the effect of the various GO content on the crystalline phase of PVDF will be investigated by Fourier infrared spectroscopy and X-ray diffraction measurement. Rheological properties at various temperatures will be disscused in connection to further possible processing. Dielectric properties will show how the GO particles influences the polymer chain mobility and thus secondary influencing the processing parameters. Finally, the vibration sensing capabilities will be elucidated using d33 electromechanical coupling coefficient

Název v anglickém jazyce

Rheological Properties of PVDF-GO Composites and Their Vibration Sensing Capability

Popis výsledku anglicky

Poly(vinylidene fluoride) (PVDF) is polymer attracting the attention of the researchers last two decades, due to its huge industrial potential. PVDF can be used for various applications and forms, such as solution casted film, extruded sheet or in form of fibers prepared by various techniques i.e. (electrospinning, melt-blown technique or melt-electrowriting technique). These unique properties can serve various applications like filtration membranes or actuating sheets or films [1]. PVDF as a semi-crystalline polymer as provide unique behaviour called piezoelectric effect. The sample can change its dimensions upon when electric voltage is applied reversibly or if the sample is mechanically deformed, certain electric output can be achieved. However, PVDF forms primarily  crystalline phase, which is unfortunately non-piezoelectric. With the help of additional treatment (polling, stretching, filler addition or combination of all mentioned approaches) the electro-active  crystalline phase can be formed [2]. However, in order to provide the system with good processing parameters, the rheological properties of neat PVDF polymer melt as well as its composites with graphene oxide (GO) is very important factor. Therefore, the effect of the various GO content on the crystalline phase of PVDF will be investigated by Fourier infrared spectroscopy and X-ray diffraction measurement. Rheological properties at various temperatures will be disscused in connection to further possible processing. Dielectric properties will show how the GO particles influences the polymer chain mobility and thus secondary influencing the processing parameters. Finally, the vibration sensing capabilities will be elucidated using d33 electromechanical coupling coefficient

Druh

O - Ostatní výsledky

CEP obor

—

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

2019

Kód důvěrnosti údajů

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