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Guru
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Dissolved in the Ocean

04/26/2007 1:27 PM

Molders, be ready: A new polyurethane-PLGA mixed plastic that degrades in seawater may make it through testing and into commercialization. ScienceDaily reports that researchers may adjust the chemical composition to develop a range of soft to rigid biodegradable plastics, particularly suited for packaging on military and cruise ships.

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Guru

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#1

Re: Dissolved in the Ocean

04/26/2007 11:56 PM

"When exposed to seawater, the plastics degrade via hydrolysis into nontoxic products, according to the scientists. Depending on the composition of the plastics, these compounds may include water, carbon dioxide, lactic acid, glycolic acid, succinic acid, caproic acid and L-lysine, all of which can be found in nature, they add. "

The possibilities of this must be many , but a quick look at the article does raise a few questions; 'nontoxic' could mean a lot of things (after all , Oxygen is not generally considered toxic ) , and there are a lot of compounds in the breakdown residue - there is not much research apparent to back up the nontoxic claim.

Will the 'nontoxic' sales pitch encourage more dumping in the sea.

Does the poly-PLGA have a sinister application - I've already thought of a few.

It's a very interesting development to post Moose , lets hope it gets looked at thoroughly before it's unleashed.

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Power-User

Join Date: Feb 2007
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#2
In reply to #1

Re: Dissolved in the Ocean

04/27/2007 12:09 AM

Rather than making something else to dump into the worlds oceans ,All ships should be required to return to port with all of their refuse.Then it could be used for fill. It won't be long befor we may be needing to build up our shore lines to hold back the oceans. We may need all that trash to help in that project.

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Guru

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#3

Re: Dissolved in the Ocean

04/28/2007 4:38 PM

CO2 is not toxic - as long as the concentration is below 4% ( then it's instantly damaging to health)

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Guru

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#4
In reply to #3

Re: Dissolved in the Ocean

04/29/2007 12:49 AM

"When exposed to seawater, the plastics degrade via hydrolysis into nontoxic products, according to the scientists. Depending on the composition of the plastics, these compounds may include water, carbon dioxide, lactic acid, glycolic acid, succinic acid, caproic acid and L-lysine"

2 down 5 to go . (Don't anyone tell me the fish might have drowned etc. )

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#5
In reply to #4

Re: Dissolved in the Ocean

04/29/2007 5:20 AM

Only in air!

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