Mechanical and fracture properties of poly(ethylene terephthalate) with glycol/carbon nanotube nanocomposite films under accelerated weathering conditions

Min Seok Choi, Jin Hyoung Lee, Byoung Ho Choi

Research output: Contribution to journalArticlepeer-review

Abstract

In this study, we developed a nanocomposite with one of the most popular engineering thermoplastics, i.e., poly(ethylene terephthalate) with glycol (PETG), and multi-walled carbon nanotubes (CNT). Commercial PETG pellets were extruded into 50-μm thick films with and without 1.0 and 2.0 weight percentages (wt%) of CNT. PETG films and PETG, CNT nanocomposite films were artificially degraded in a customized ultraviolet (UV) weathering apparatus with UV radiance for a certain temperature. They were analyzed in three stages. In the first stage, we attempted to quantify the effect of the accelerated weathering via ultraviolet-visible spectroscopy (UV-Vis) and x-ray photoelectron spectroscopy analyses (XPS). In the second stage, mechanical and fracture characteristics were examined by tensile tests and essential work of fracture (EWF) tests. Finally, fracture surfaces of PETG films and PETG, CNT nanocomposite films were observed via scanning electron microscope (SEM) images.

Original languageEnglish
Pages (from-to)3837-3845
Number of pages9
JournalJournal of Mechanical Science and Technology
Volume35
Issue number9
DOIs
Publication statusPublished - 2021 Sep

Keywords

  • Accelerated weathering
  • Carbon nanotubes
  • Essential work of fracture test
  • Nanocomposite film

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering

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