eliza61nyc
Well-Known Member
Actually I don't think anyone really knows if the plastic bag will last longer than your tote or not. If you look at where the 1000 years to breakdown comes from it is based on a test done using microbes that would breakdown organic materials. The scientist that came up with the 1000 years number basically used a flawed test because they based it off placing a sample of plastic material in a container with microbes that wouldn't eat the plastic and then extrapolated the data into 1000 years. Reality is plastic hasn't been around for 1000 years, hasn't even been around for 100 years so those numbers are just guesses. Reality is some plastics don't like UV rays and will become brittle and breakdown very quickly in sunlight, which wasn't how the samples were tested. If you changed the tests that were used to use sunlight instead of microbes you would find that things like plastic would breakdown much faster than things like cotton used in totes if the only agent used to break them down was light. But for some reason environmentalist latched onto the 1000 years for plastic to breakdown number and have pushed it as if it were some irrefutable fact when it is really more of a myth. If plastics lasted 1000 years would you ever see old cars and trucks with cracked plastic dashboards?
Naw not entirely true or let me say rather you tried to simplify it to make an argument. of course we have a good idea if they will last longer than organic fibers. I'm a polymer chemist, while the 1000 years is not based on actual physical data because you are right they haven't been around 1000 years. we do have some experience with extrapolation and we've got some really nifty toys attached to our computers. lol. Now as far as the UV claim, you are doing the same thing thing, you are making aclaim and not giving the entire information. first of all sunlight is not 100% uv light so even if some plastics break down easily in UV rays (and polypropylene does not so it depends on what the plastic is made of) it's not like empty water bottles are sitting around under a UV lamp all day. and again sunlight is a mixed bag of tricks.
Next the ones that do breakdown in uv light emit off a far worse problem. lol call Dupont chemicals and ask them how their PFOA problem is going. All those teflon coatings that are breaking down into cancer causing nastiness. the epa banned BPA recently, and that's what makes up quite a bit of our plastic. they've been finding it in babies bottles, water bottles etc. so let's say your plastic does break down real quick, that ain't a good thing.
We've got tons and tons of research from major universities that have millions of grad students with hours to kill trying to make a name for themselves proving those plastic water bottles last a very long time.
listen, again I'm not some ultra environmentalist that say ban plastic, it's a great discovery with tons of applications and lol that would be shooting myself in the foot and i need a job for a while longer BUT we can no longer pretend that the over abundance of the stuff is not doing harm. it is.
Also, let's work on developing new types of polymers that aren't so bad for the environment and our health. nothing sparks innovation like banning some thing. like I said previously I know of two studies that are trying to make disposable bags out of a combo of plastic and corn starch. that is so cool and I know one major chemical company that is trying to develop little bugs and enzymes that love to eat plastic.
edited to add: it's been a hundred years since i worked in polymer synthesis so I do think the development of plastics has probably gotten a lot better. I work in Paper/pulp water synthesis now.
Edited to ask? why are folks so resisted to this?? I mean is the ability to drink out of a plastic straw life altering? Carry your stuff in a cloth bag as opposed to plastic detrimental???
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