Electrical conductivity and morphology of polyaniline/montmorillonite and derived graphene-containing nanocomposites

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F17%3A10235741" target="_blank" >RIV/61989100:27360/17:10235741 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27640/17:10235741 RIV/61989100:27740/17:10235741

Výsledek na webu

<a href="https://www.nanocon.eu/files/uploads/01/NANOCON2016_conference_proceedings_content.pdf" target="_blank" >https://www.nanocon.eu/files/uploads/01/NANOCON2016_conference_proceedings_content.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Electrical conductivity and morphology of polyaniline/montmorillonite and derived graphene-containing nanocomposites

Popis výsledku v původním jazyce

Tapping mode atomic force microscopy (TM-AFM) and scanning spreading resistance microscopy (SSRM) were found to be useful scanning probe microscopy (SPM) techniques for the characterization of surface conductivity and morphology of the conductive ceramics-like and graphene-containing nanocomposite prepared from polyaniline/montmorillonite (PANI/MMT) nanocomposite. In this work, the changes in conductivity and morphology of PANI/MMT nanocomposites before and after heat treatment are studied. PANI/MMT nanocomposite was prepared using oxidative polymerization of anilinium sulfate by ammonium peroxydisulfate in the presence of MMT particles (size fraction &lt; 40 µm). Prepared PANI/MMT powder was pressed into tablets using pressure 400 MPa. These tablets were calcined in dynamic argon atmosphere at temperature 1400 °C for 1 hour. The changes of local current on the surface and on the fractures (i.e. in the internal volume) of tablets were studied using SSRM and the local current maps of PANI/MMT nanocomposites before and after calcination were compared. SSRM shows that while after the calcination the conductivity in the internal volume of the sample strongly increased, the conductivity on the surface disappeared. Tapping mode is characterized by a less sample-tip interaction and, therefore, with respect to the nature of prepared nanocomposites, provides images without many visible artefacts.

Název v anglickém jazyce

Electrical conductivity and morphology of polyaniline/montmorillonite and derived graphene-containing nanocomposites

Popis výsledku anglicky

Tapping mode atomic force microscopy (TM-AFM) and scanning spreading resistance microscopy (SSRM) were found to be useful scanning probe microscopy (SPM) techniques for the characterization of surface conductivity and morphology of the conductive ceramics-like and graphene-containing nanocomposite prepared from polyaniline/montmorillonite (PANI/MMT) nanocomposite. In this work, the changes in conductivity and morphology of PANI/MMT nanocomposites before and after heat treatment are studied. PANI/MMT nanocomposite was prepared using oxidative polymerization of anilinium sulfate by ammonium peroxydisulfate in the presence of MMT particles (size fraction &lt; 40 µm). Prepared PANI/MMT powder was pressed into tablets using pressure 400 MPa. These tablets were calcined in dynamic argon atmosphere at temperature 1400 °C for 1 hour. The changes of local current on the surface and on the fractures (i.e. in the internal volume) of tablets were studied using SSRM and the local current maps of PANI/MMT nanocomposites before and after calcination were compared. SSRM shows that while after the calcination the conductivity in the internal volume of the sample strongly increased, the conductivity on the surface disappeared. Tapping mode is characterized by a less sample-tip interaction and, therefore, with respect to the nature of prepared nanocomposites, provides images without many visible artefacts.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

21001 - Nano-materials (production and properties)

Projekt

<a href="/cs/project/LQ1602" target="_blank" >LQ1602: IT4Innovations excellence in science</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název statě ve sborníku

NANOCON 2016 : conference proceedings : October 19-21, 2016, Brno, Česko

ISBN

978-80-87294-71-0

ISSN

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e-ISSN

neuvedeno

Počet stran výsledku

6

Strana od-do

739-744

Název nakladatele

Tanger

Místo vydání

Ostrava

Místo konání akce

Brno

Datum konání akce

19. 10. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000410656100128