Effect of extrusion process and various elongation ratios on the structural and dielectric properties of pvdf-based copolymer containing micro and nano-sized crystallites

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28610%2F21%3A63543518" target="_blank" >RIV/70883521:28610/21:63543518 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216305:26220/21:PU144109

Výsledek na webu

<a href="https://www.confer.cz/nanocon/2020/3694-effect-of-extrusion-process-and-various-elongation-ratios-on-the-structural-and-dielectric-properties-of-pvdf-based-copolymer-containing-micro-and-nano-sized-crystalites" target="_blank" >https://www.confer.cz/nanocon/2020/3694-effect-of-extrusion-process-and-various-elongation-ratios-on-the-structural-and-dielectric-properties-of-pvdf-based-copolymer-containing-micro-and-nano-sized-crystalites</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.37904/nanocon.2020.3694" target="_blank" >10.37904/nanocon.2020.3694</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of extrusion process and various elongation ratios on the structural and dielectric properties of pvdf-based copolymer containing micro and nano-sized crystallites

Popis výsledku v původním jazyce

In this contribution, the effect of the extrusion process of the poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-co-HFP) with the subsequent elongation/poling on its structural and dielectric properties is presented. The extrusion can be understood as continuous processing of polymer melts in the large scale (in comparison to solvent casting), when the thickness of the final product can be varied depending on the final operation conditions. Herein, the PVDF-co-HFP sheets of 5 cm in width were extruded using a single screw extruder. The fabricated sheets were cooled down and then, they were cut to the stripes and subsequently stretched to various elongations (100, 200 and 500 %) using a universal tensile testing machine. Such samples were investigated using FTIR in order to determine the effect of the elongation process on the transformation of the a-phase to the β-crystalline phase. The extend of the electro-active β-phase was quantified and its impact on the dielectric properties was investigated. The results clearly demonstrated that the elongation has a crucial effect on the final dielectric properties of the PVDF-co-HFP.

Název v anglickém jazyce

Effect of extrusion process and various elongation ratios on the structural and dielectric properties of pvdf-based copolymer containing micro and nano-sized crystallites

Popis výsledku anglicky

In this contribution, the effect of the extrusion process of the poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-co-HFP) with the subsequent elongation/poling on its structural and dielectric properties is presented. The extrusion can be understood as continuous processing of polymer melts in the large scale (in comparison to solvent casting), when the thickness of the final product can be varied depending on the final operation conditions. Herein, the PVDF-co-HFP sheets of 5 cm in width were extruded using a single screw extruder. The fabricated sheets were cooled down and then, they were cut to the stripes and subsequently stretched to various elongations (100, 200 and 500 %) using a universal tensile testing machine. Such samples were investigated using FTIR in order to determine the effect of the elongation process on the transformation of the a-phase to the β-crystalline phase. The extend of the electro-active β-phase was quantified and its impact on the dielectric properties was investigated. The results clearly demonstrated that the elongation has a crucial effect on the final dielectric properties of the PVDF-co-HFP.

Druh

D - Stať ve sborníku

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

2021

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings 12th International Conference on Nanomaterials - Research &amp; Application

ISBN

978-80-87294-98-7

ISSN

2694-930X

e-ISSN

—

Počet stran výsledku

6

Strana od-do

127-132

Název nakladatele

Tanger Ltd.

Místo vydání

Ostrava

Místo konání akce

Brno

Datum konání akce

21. 10. 2020

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

000664505500021