• Kale@lemmy.zip
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    1 year ago

    Cellulose, starch, and chitin are all sugar polymers in plants and crustaceans (may be a broader group, I used chitosan from crustaceans though).

    In mammals, collagen is a polymer. It’s like 30% of a humans non-water weight. Bones are composites that are tough collagen binding hard and strong fibers of apatite (mostly calcium apatite/ hydroxyapatite). I don’t think the apatite system is considered a polymer, though.

    Triglycerides aren’t polymers in adipose tissue. Although plant triglycerides can split and polymerize. Which make beautiful wood stains.

    • stoneparchment@possumpat.io
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      1 year ago

      Yeah but like… not all polymers are plastics, right? Like… they aren’t synonyms?

      Wikipedia says acrylics, polyesters, silicones, polyurethanes, thermoplastics, and thermosets are plastics. Do those exist in organic tissue? Am I missing an obvious group?

    • interolivary@beehaw.org
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      1 year ago

      All plastics are polymers, but I really don’t think it’s a commonly held view that all polymers are plastics

      • Kale@lemmy.zip
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        1 year ago

        Ah ok. That’s probably true. I was under the impression that a polymer that is solid at room temperature is a plastic.