An effective EMI shielding material based on poly(trimethylene terephthalate) blend nanocomposites with multiwalled carbon nanotubes

Описание

Тип публикации: статья из журнала

Год издания: 2018

Идентификатор DOI: 10.1039/c8nj02410c

Аннотация: The effects of blend ratio and MWCNT loading on the morphology, electrical properties and electromagnetic shielding performance of poly(trimethylene terephthalate) (PTT)/polypropylene (PP) blend nanocomposites were studied. To understate the state of dispersion of the MWCNTs, PTT/PP blend nanocomposites were systematically analyzedПоказать полностьюusing scanning electron microscopy and high resolution transmission electron microscopy. Fourier transform spectroscopy (FT-IR) and Raman spectroscopy techniques were used to understand the chemical interactions between the blend components and fillers. Among the nanocomposites of all blend composition with 1 wt% MWCNTs, composites with high wt% PTT (90PTT/10PP/1MWCNT) showed better electrical properties due to the double percolation phenomenon. The shielding effectiveness (SE) was investigated in the S-band frequency range and 90PTT/10PP/1MWCNT showed a very good shielding effectiveness for electromagnetic radiation. Further studies with different MWCNT loadings showed that the 90PTT/10PP blend with 5 wt% MWCNTs indicated high dielectric properties and a maximum SE of ∼40 dB. The conductivity results were linearly fitted by a power law and the obtained percolation threshold was found to be around 0.5 wt% MWCNTs. Theoretical models were also applied for the DC conductivity data to explain the conductive mechanism in the polymer blend nanocomposites. © The Royal Society of Chemistry and the Centre National de la Recherche Scientifique.

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Издание

Журнал: New Journal of Chemistry

Выпуск журнала: Vol. 42, Is. 16

Номера страниц: 13915-13926

ISSN журнала: 11440546

Издатель: Royal Society of Chemistry

Авторы

  • Ajitha A.R. (Mahatma Gandhi Univ, Int & Inter Univ Ctr Nanosci & Nanotechnol, Kottayam 686560, Kerala, India)
  • Arif Mohammed P. (Mahatma Gandhi Univ, Int & Inter Univ Ctr Nanosci & Nanotechnol, Kottayam 686560, Kerala, India)
  • Aswathi M.K. (Mahatma Gandhi Univ, Int & Inter Univ Ctr Nanosci & Nanotechnol, Kottayam 686560, Kerala, India)
  • Mathew Lovely P. (Mahatma Gandhi Univ, Int & Inter Univ Ctr Nanosci & Nanotechnol, Kottayam 686560, Kerala, India; Viswajyothi Coll Engn & Technol, Muvattupuzha 686670, Kerala, India)
  • Geethamma V.G. (Mahatma Gandhi Univ, Int & Inter Univ Ctr Nanosci & Nanotechnol, Kottayam 686560, Kerala, India)
  • Kalarikkal Nandakumar (Mahatma Gandhi Univ, Int & Inter Univ Ctr Nanosci & Nanotechnol, Kottayam 686560, Kerala, India; Mahatma Gandhi Univ, Sch Pure & Appl Phys, Kottayam 686560, Kerala, India)
  • Thomas Sabu (Mahatma Gandhi Univ, Int & Inter Univ Ctr Nanosci & Nanotechnol, Kottayam 686560, Kerala, India; Mahatma Gandhi Univ, Sch Chem Sci, Kottayam 686560, Kerala, India; Siberian Fed Univ, 79 Svobodnyi Av, Krasnoyarsk 660041, Russia)
  • Volova Tatiana (Siberian Fed Univ, 79 Svobodnyi Av, Krasnoyarsk 660041, Russia)

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