• ComradeSharkfucker@lemmy.ml
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    17 days ago

    I feel like soluble plastic can’t be a good thing actually

    Edit: the plastic chemically decomposes in water, it does not dissolve

  • Archangel1313@lemmy.ca
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    17 days ago

    It dissolves…but into what? Sounds like a recipe for a petroleum salt water mix that’s probably just as toxic as melted plastic, unless all the petroleum is removed.

    • setsubyou@lemmy.world
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      17 days ago

      It doesn’t seem to be based on petroleum, since they’re explicitly comparing it to petroleum-based plastics…

      There also are other non-petroleum based plastics that dissolve in water. This part is not new. E.g. polyvinyl alcohol is used widely.

      What’s new about this one is that it specifically needs salt to dissolve and they claim it’s otherwise relatively sturdy. So maybe it could be used instead of pet bottles for drinks? Or maybe they’re not quite there yet but it’s a new step in that direction…

      • dual_sport_dork 🐧🗡️@lemmy.world
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        17 days ago

        For anyone wondering about where, just as an example, polyvinyl is: Polyvinyl acetate (i.e. PVA) is the stuff that wood glue is typically made out of. It’s also the binder used for those bird seed bells.

        …It does indeed dissolve in the water. In the rain, certainly, which any owner of a bird seed bell could tell you.

    • notabot@lemm.ee
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      17 days ago

      It’s a bit of a stretch calling it a plastic, as it’s not petroleum based from what I’ve read.

  • Ilovethebomb@lemm.ee
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    17 days ago

    This sounds borderline miraculous, and I have a feeling there’s bound to be a catch. I hope not, but I’m just too cynical.

    • hperrin@lemmy.ca
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      17 days ago

      The catch is that it’s useless in most plastics applications, where you really don’t want it to dissolve easily. Probably more catches, but that’s the one I see right away.

      • RvTV95XBeo@sh.itjust.works
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        17 days ago

        Also probably gonna turn out it dissolves into smaller plastics, perfectly sized for penetrating the blood-brain-barrier.

        Edit: I get it, no new technology has ever had issues with safety and efficacy uncovered after entering mass production and being discarded with reckless abandon in our environment

        I apologize to the articles authors for my cynicism, it is clear from the article that nothing bad could possibly come from allowing this new plastic to dissolve in our oceans. It is nice to see plastic pollution has been definitively solved for the rest of time and we no longer have to worry about it.

        • thebestaquaman@lemmy.world
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          17 days ago

          If you read the article, you’ll find that they claim it’s broken down into something which is processed by naturally occurring bacteria. I would have preferred that they linked to an actual research article for details, but this is explicitly not one of these “degradable” plastics that just dissolves into microplastic.

      • Ilovethebomb@lemm.ee
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        17 days ago

        Ah, of course. Although, they did mention coatings to protect the material, but it does sound like it will be more fragile than existing plastic.

    • Sixty@sh.itjust.works
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      17 days ago

      The catch would be the reactor. An EVA type of plastic reactor can output more than 12 tons per hour these days.

  • ExtraPartsLeft@lemmy.world
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    17 days ago

    I think some of y’all are missing a lot of packaging use cases other than food. But even in the food sector, there are dry things like pasta, beans, and rice that don’t have salt in them. If it really is as strong as a petroleum plastic for these items, it could eliminate tons of micro plastic.

    • Rob T Firefly@lemmy.world
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      17 days ago

      From the article:

      Aida said the new material is as strong as petroleum-based plastics but breaks down into its original components when exposed to salt. Those components can then be further processed by naturally occurring bacteria, thereby avoiding generating microplastics that can harm aquatic life and enter the food chain.

      As salt is also present in soil, a piece about five centimetres (two inches) in size disintegrates on land after over 200 hours, he added.

      The material can be used like regular plastic when coated, and the team are focusing their current research on the best coating methods, Aida said. The plastic is non-toxic, non-flammable, and does not emit carbon dioxide, he added.

      So I think the next thing the goose wants to know is, what’s it being coated with?

    • MuteDog@lemmy.world
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      17 days ago

      It dissolves into salt water.

      Except it doesn’t dissolve, this is not the term they should be using, you can’t just dry out the water and get the plastic back. It breaks down into other things. I’m pretty sure an ocean full of dissolved plastic would be a way worse ecological disaster than the current microplastic problem…

      I’ve seen like 3-4 articles about this now and they all use the term dissolve and it’s pissing me off.

  • parpol@programming.dev
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    17 days ago

    The material can be used like regular plastic when coated,

    Coated with what? If you say PFAS, this is worse than microplastics.

  • hperrin@lemmy.ca
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    17 days ago

    You see the thing is, the point of plastic is that it doesn’t dissolve easily. I can see this having some niche applications, but this won’t be replacing most plastics any time soon.

    • unexposedhazard@discuss.tchncs.de
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      17 days ago

      Its specifically sensitive to salt, so you can use it for anything with little or no salt without issue. Also it would be perfect for basically all packaging applications that dont involve food but do require an airtight seal. So you could probably replace the majority of all single use plastic packaging/containers with it.

    • thebestaquaman@lemmy.world
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      17 days ago

      To be fair, this was originally the point of plastic. The primary point of plastic today is that it is an extremely cheap material that you can mould into pretty much any shape.

      Need a bag to carry stuff? Plastic.

      Packaging for toothpicks? Plastic.

      Spacers inside an electric circuit? Plastic.

      Packaging for clothes? Plastic.

      Fake plant? Plastic.

      Part of the problem is that we’re using a wonder-material that lasts forever (plastic) for a bunch of mundane shit where we don’t need it, because that wonder-material turns out to be the cheapest material around as well.

      • hperrin@lemmy.ca
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        17 days ago

        Yeah, fair enough. That’s a great point. I will update my opinion of this advancement.

    • floofloof@lemmy.caOP
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      17 days ago

      Ah but imagine the eager faces of Logitech’s execs when they realize they could make their mice dissolve under your fingers and offer a subscription for replacements.

  • SunshineJogger@feddit.org
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    17 days ago

    I hope they can tune it to react only to a very specific type of salt water range or else it will not be applicable very often.

    And I love this. More if this please

  • pastermil@sh.itjust.works
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    17 days ago

    Or we can, you know, have waxed paper?

    Also, I thought we’ve already mainstreamed starch-based plastics.

    Last but not least, we’ve had cellophane pretty much since the industrial revoltion. The current issue has been the productionlike containing toxic materials, but the end product itself is biodegradable. Perhaps we can improve on that.

  • Sibbo@sopuli.xyz
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    17 days ago

    So then what can it be used for, other than being decomposed? Doesn’t almost all food contain salt, and human sweat as well? It’s not really useful on earth then, is it? Maybe for unmanned spacecrafts?

    Well, the dream material would be some that is stable during use and then immediately falls apart when disposed. But that’s not how things usually work, so anything that decomposes fairly quickly cannot be used to store food for example, as it would just mix with the food. And anything that is stable enough to store food does not decompose in a hundred years or so.

    • davidgro@lemmy.world
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      17 days ago

      Sounds great for non-food packages, such as small electronics, toys, etc. Anything that currently comes in a blister pack.

      • Sibbo@sopuli.xyz
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        17 days ago

        Depends on how much the salt content in the air at coastal places affect it. But if it doesn’t that much, then sure, sounds good. Of course, also the intermediate products of decomposition should be nontoxic in that case.

    • floofloof@lemmy.caOP
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      17 days ago

      I guess that’s part of the reason they’re exploring coatings - something to slow down the degradation during regular usage.

  • Narri N.@lemmy.ml
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    17 days ago

    huh. happy to know we’ll never hear from this again! thanks capitalism!