Outdoor weathering of selected polymeric materials under marine exposure conditions
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Polyethylene films and thermoplastic materials degraded more slowly when submerged in seawater than in air, probably because of lower sunlight, temperature, and oxygen.
“For example, polyethylene films and thermoplastic materials were found to degrade at slower rates while submerged in seawater compared to those in the air, probably as a result of lower sunlight exposure, lower temperatures, and lower oxygen levels (Pegram and Andrady, 1989; Andrady et al., 1993).”
From Degradation of bio-based and biodegradable plastics in a salt marsh habitat: Another potential source of microplastics in coastal waters (2020) · cites this paper as Pegram and Andrady, 1989
Mechanical forces such as turbulence and abrasion could increase the susceptibility of plastics to fragmentation.
“Mechanical forces, such as those associated with turbulence and abrasion could increase the susceptibility of plastics to fragmentation (Pegram and Andrady, 1989; Browne et al., 2010).”
From Degradation of bio-based and biodegradable plastics in a salt marsh habitat: Another potential source of microplastics in coastal waters (2020) · cites this paper as Pegram and Andrady, 1989
Pegram and Andrady (1989) found little evidence of weathering of polyethylene samples floating in seawater over 8 weeks, whereas samples exposed to air nearly embrittled over the same period.
“These results corroborate those of an earlier study by Pegram and Andrady (1989), who found little evidence of weathering of polyethylene samples floating in seawater over an 8-week period, whereas those exposed to air nearly embrittled over the same period.”
From Degradation of bio-based and biodegradable plastics in a salt marsh habitat: Another potential source of microplastics in coastal waters (2020) · cites this paper as Pegram and Andrady (1989)
Reduced deterioration in seawater has been observed previously.
“Reduced deterioration in seawater has been observed previously.”
From Environmental Deterioration of Biodegradable, Oxo-biodegradable, Compostable, and Conventional Plastic Carrier Bags in the Sea, Soil, and Open-Air Over a 3-Year Period (2019) · cites this paper as Pegram and Andrady (1989)
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References 10 · Cited by 129
- Authors
- Pegram, J. E., & Andrady, A. L.
- Affiliations
- RTI International (US)
- ORCID
- Andrady, Anthony L.
- Venue
- Polymer Degradation and Stability
- Publisher
- Elsevier BV
- Published
- 1989-01
- Volume
- 26
- Issue
- 4
- Pages
- 333-345
- ISSN
- 0141-3910 (ISSN-L)
- OpenAlex
- W2088777612
- Cited by
- 129
- References
- 10
- Citations by year
- 2026: 4 · 2025: 7 · 2024: 5 · 2023: 9 · 2022: 12 · 2021: 14 · 2020: 17 · 2019: 6 · 2018: 10 · 2017: 4 · 2016: 7 · 2015: 9 · 2014: 3 · 2013: 3
- FWCI
- 0.53
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Polymer Degradation and Stability (publishedVersion)
- Funders
- National Marine Fisheries Service
- Topics
- Physical Sciences › Environmental Science › Pollution › Microplastics and Plastic Pollution
- Physical Sciences › Materials Science › Polymers and Plastics › Polymer Science and PVC
- Physical Sciences › Materials Science › Polymers and Plastics › Polymer crystallization and properties
- Keywords
- natural weathering, marine plastic debris, thermoplastics, natural rubber latex, polymer degradation, tensile properties, seawater exposure, air exposure, heat build-up
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