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Abstract <p>Changes in the surface resistance of polyethylene based composite films modified by multi-walled carbon nanotubes (MWCNTs) as a result of laser treatment are studied. Composites containing uniformly distributed nanotubes throughout their volume are prepared by mechanical melt mixing. The composite surfaces are treated by a 1064 nm fiber laser while varying the pulse duration within the 3-120&#xa0;ns range and the source power within the 0.6-21&#xa0;W range, so that the surface energy density during processing is 0.1-18.3&#xa0;J/cm<sup>2</sup>. The influence of laser treatment parameters on the surface structure of composites is studied by scanning electron microscopy and Raman spectroscopy, and the surface resistance is determined using a four-electrode circuit. It is established that the surface resistance of the MWCNT-modified polymer composites can be either decreased by 30-50&#xa0;times or increased by up to 140&#xa0;times by tuning the laser treatment parameters.</p>

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Effect of Laser Treatment on the Surface Resistance of Polymer Composites Modified by Multi-Walled Carbon Nanotubes

  • 期刊论文

  • 发表日期：

    2025年1月1日

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  • S. I. Moseenkov,
  • A. V. Zavorin,
  • A. N. Serkova,
  • B. A. Kolesov,
  • V. L. Kuznetsov

摘要

Abstract

Changes in the surface resistance of polyethylene based composite films modified by multi-walled carbon nanotubes (MWCNTs) as a result of laser treatment are studied. Composites containing uniformly distributed nanotubes throughout their volume are prepared by mechanical melt mixing. The composite surfaces are treated by a 1064 nm fiber laser while varying the pulse duration within the 3-120 ns range and the source power within the 0.6-21 W range, so that the surface energy density during processing is 0.1-18.3 J/cm2. The influence of laser treatment parameters on the surface structure of composites is studied by scanning electron microscopy and Raman spectroscopy, and the surface resistance is determined using a four-electrode circuit. It is established that the surface resistance of the MWCNT-modified polymer composites can be either decreased by 30-50 times or increased by up to 140 times by tuning the laser treatment parameters.