Article
  • Investigation of Dielectric Properties of Polyethylene-Clay Nanocomposites for Quantifying Nanofiller Dispersion
  • Saffettin Yıldırım, Kübra Pehlivan, Ali Durmuş*, and Kadir Esmer**,†

  • Physics Department, İstanbul University, 34134, Vezneciler, İstanbul, Turkey
    *Chemical Engineering Department, İstanbul University, 34320, Avcılar, İstanbul, Turkey
    **Physics Department, Marmara University, 34722, Göztepe, İstanbul, Turkey

  • 나노 충전제의 분산을 정량화하기 위한 폴리에틸렌-클레이 나노 복합체의 유전특성 연구
Abstract

This study examined the dielectric properties of linear low density polyethylene (LLDPE)/organo-clay nanocomposites including the same amount of maleic anhydride grafted polyethylene (PE-g-MA) and oxidized polyethylene (OxPE) as compatibilizer at different frequencies (10-1-10+7 Hz) and temperatures (237-373 K). The dielectric constant of natural LLDPE remained constant at around 1.5, depending on the temperature rise and frequency while that of LLDPE-PE-g-MA/clay and LLDPE-OxPE/clay nanocomposites increased up to 4.8 and 2.8, respectively, linearly with increasing temperature. Especially in the low frequency region, a Maxwell-Wagner-Sillars polarization was observed in composite structures with an increase in temperature due to the dipolar effect. It has been concluded that the clay in the polymer matrix was more homogeneously dispersed than OxPE due to the compatibilizing effect of PE-g-MA and that different polarization mechanisms were at play for each compatibilizer.


Keywords: low density polyethylene, composites, nanoparticles, polymers, dielectric properties

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2022 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2018; 42(5): 769-775

    Published online Sep 25, 2018

  • 10.7317/pk.2018.42.5.769
  • Received on Feb 16, 2018
  • Revised on Apr 17, 2018
  • Accepted on Apr 25, 2018

Correspondence to

  • Kadir Esmer
  • Physics Department, İstanbul University, 34134, Vezneciler, İstanbul, Turkey
    **Physics Department, Marmara University, 34722, Göztepe, İstanbul, Turkey

  • E-mail: kadir.esmer@marmara.edu.tr