Textural, surface and chemical properties of polyvinyl chloride particles degraded in a simulated environment

Chih Cheng Tang, Huey Ing Chen, Peter Brimblecombe, Chon Lin Lee

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

Virgin polyvinyl chloride (PVC) particles were exposed to heat, ultraviolet B (UVB) and solar radiation either in artificial seawater or in air for different periods of time. The surface and chemical properties of fresh and degraded particle surfaces were determined via image analysis using scanning electron micrographs, a Brunauer-Emmett-Teller (BET) specific surface area analyzer and infrared spectroscopy. Thermal and UVB degradation resulted in unique PVC morphologies. In addition, the increased presences of functional groups were evident as dehydrochlorination and oxidation during the degradation process, which altered the chemical properties of PVC. In contrast, under solar exposure with or without seawater, unevenness to the surface was noted that seems to originate from degradation of the PVC surface; in addition, no new functional groups were found. This suggests that the chemical properties of PVC are stable over extended periods in the marine environment.

Original languageEnglish
Pages (from-to)392-401
Number of pages10
JournalMarine Pollution Bulletin
Volume133
DOIs
Publication statusPublished - 2018 Aug

All Science Journal Classification (ASJC) codes

  • Oceanography
  • Aquatic Science
  • Pollution

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