It's more than just the chain length. The most common synthetic rubbers are styr... | Hacker News

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		spqr0a1 on Oct 1, 2023 \| parent \| context \| favorite \| on: Tire dust makes up the majority of ocean microplas... It's more than just the chain length. The most common synthetic rubbers are styrene-butadiene copolymers. Natural rubber is polyisoprene. While it is true that shorter chain synthetic polyisoprene is available, it is a much smaller part of the market than styrene-butadiene.

dpeckett on Oct 1, 2023 [–]

Does look like both natural and synthetic polyisoprene is at-least somewhat biodegradeable: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC92035/

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