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One-Dimensional Nanostructures of Polypyrrole for Shielding of Electromagnetic Interference in the Microwave Region

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F20%3A43921332" target="_blank" >RIV/60461373:22340/20:43921332 - isvavai.cz</a>

  • Alternative codes found

    RIV/60461373:22810/20:43921332

  • Result on the web

    <a href="https://www.mdpi.com/1422-0067/21/22/8814" target="_blank" >https://www.mdpi.com/1422-0067/21/22/8814</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.3390/ijms21228814" target="_blank" >10.3390/ijms21228814</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    One-Dimensional Nanostructures of Polypyrrole for Shielding of Electromagnetic Interference in the Microwave Region

  • Original language description

    Polypyrrole one-dimensional nanostructures (nanotubes, nanobelts and nanofibers) were prepared using three various dyes (Methyl Orange, Methylene Blue and Eriochrome Black T). Their high electrical conductivity (from 17.1 to 60.9 S cm−1), good thermal stability (in the range from 25 to 150 °C) and resistivity against ageing (half-time of electrical conductivity around 80 days and better) were used in preparation of lightweight and flexible composites with silicone for electromagnetic interference shielding in the C-band region (5.85–8.2 GHz). The nanostructures’ morphology and chemical structure were characterized by scanning electron microscopy, Brunauer–Emmett–Teller specific surface measurement and attenuated total reflection Fourier-transform infrared spectroscopy. DC electrical conductivity was measured using the Van der Pauw method. Complex permittivity and AC electrical conductivity of respective silicone composites were calculated from the measured scattering parameters. The relationships between structure, electrical properties and shielding efficiency were studied. It was found that 2 mm-thick silicone composites of polypyrrole nanotubes and nanobelts shield almost 80% of incident radiation in the C-band at very low loading of conductive filler in the silicone (5% w/w). Resulting lightweight and flexible polypyrrole composites exhibit promising properties for shielding of electromagnetic interference in sensitive biological and electronic systems.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    21001 - Nano-materials (production and properties)

Result continuities

  • Project

  • Continuities

    S - Specificky vyzkum na vysokych skolach

Others

  • Publication year

    2020

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    International Journal of Molecular Sciences

  • ISSN

    1661-6596

  • e-ISSN

  • Volume of the periodical

    21

  • Issue of the periodical within the volume

    22

  • Country of publishing house

    CH - SWITZERLAND

  • Number of pages

    12

  • Pages from-to

  • UT code for WoS article

    000594315400001

  • EID of the result in the Scopus database

    2-s2.0-85096596269