Cited by 663Microplastics and Plastic PollutionPolymer crystallization and propertiesPolymer Science and PVC

Effects of mechanical and chemical processes on the degradation of plastic beach debris on the island of Kauai, Hawaii

Cooper, David A, Corcoran, Patricia L·2010·Marine Pollution Bulletin

Abstract

Plastic debris is accumulating on the beaches of Kauai at an alarming rate, averaging 484 pieces/day in one locality. Particles sampled were analyzed to determine the effects of mechanical and chemical processes on the breakdown of polymers in a subtropical setting. Scanning electron microscopy (SEM) indicates that plastic surfaces contain fractures, horizontal notches, flakes, pits, grooves, and vermiculate textures. The mechanically produced textures provide ideal loci for chemical weathering to occur which further weakens the polymer surface leading to embrittlement. Fourier transform infrared spectroscopy (FTIR) results show that some particles have highly oxidized surfaces as indicated by intense peaks in the lower wavenumber region of the spectra. Our textural analyses suggest that polyethylene has the potential to degrade more readily than polypropylene. Further evaluation of plastic degradation in the natural environment may lead to a shift away from the production and use of plastic materials with longer residence times.

Integrity signals

Registry

Crossref · 10.1016/j.marpolbul.2009.12.026

Cites

19 of 19 references verified0 citation errors · 0 not checkable

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  • Embrittlement of extensively eroded plastics, especially polyethylene, has been documented on beaches in Kauai, Hawaii.

    “Embrittlement of extensively eroded plastics, especially those made from polyethylene, has been documented on the beaches in Kauai (Hawaii) (Cooper and Corcoran, 2010).”
  • Land-based, mostly coastal sources account for 80% of PMD, transported via natural waterways, sewage/drainage systems, wind or human neglect.

    “Land based, mostly coastal sources account for 80% of PMD, which is transported via natural waterways, sewage/drainage systems, wind or human neglect.[48][49][50]”
  • In the marine environment, plastic fragmentation is induced by mechanical stress, e.g. due to wave action.

    “In the marine environment, plastic fragmentation is induced by mechanical stress, e.g.due to wave action.48,101”
  • Photooxidation of plastics comprises free-radical reactions and chain scission initiated by (solar) UV radiation.

    “Photooxidation of plastics comprises freeradical reactions and chain scission initiated by (solar) UV radiation.4,14,48,105”

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Authors
Cooper, D. A., & Corcoran, P. L.
Affiliations
Western University (CA)
Corresponding author
Cooper, David A
Venue
Marine Pollution Bulletin
Publisher
Elsevier BV
Published
2010-05
Volume
60
Issue
5
Pages
650-654
ISSN
0025-326X (ISSN-L)
OpenAlex
W2036462648
Cited by
663
References
19
Citations by year
2026: 36 · 2025: 63 · 2024: 86 · 2023: 82 · 2022: 68 · 2021: 83 · 2020: 63 · 2019: 50 · 2018: 30 · 2017: 22 · 2016: 26 · 2015: 20 · 2014: 8 · 2013: 11 · 2012: 8
FWCI
8.21
Type
journal article
Language
en
Open access
closed
Locations
  • Marine Pollution Bulletin (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Environmental Science › Pollution › Microplastics and Plastic Pollution
  • Physical Sciences › Materials Science › Polymers and Plastics › Polymer crystallization and properties
  • Physical Sciences › Materials Science › Polymers and Plastics › Polymer Science and PVC
Keywords
plastic degradation, mechanical weathering, chemical weathering, polyethylene, polypropylene, surface oxidation, beach litter, Kauai
MeSH terms
Bathing Beaches, Environmental Monitoring, Environmental Pollutants, Geography, Hawaii, Microscopy, Electron, Scanning, Plastics, Polypropylenes, Waste Products, Spectroscopy, Fourier Transform Infrared, Ecosystem, Polyethylene

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