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The sweetness of biodegradable plastics
Date:12/14/2010

based plastics complement or replace the petroleum-based plastics which can take a millenium to degrade, leaving harmful pollutants in the soil and in water. Corn-based plastic wouldn't cause any adverse health effects and would be expected to biodegrade in a compost bin in a matter of months.

Lord of the plastic ring

Plastics won't be going away any time soon, Prof. Kol suggests, pointing to the movement from concrete or stainless steel to plastic in a variety of industries. Replacing the steel manifold of a car with a plastic substitute would cut down on fuel consumption, and replacing a water pipe made of concrete or metal with one made of corrosion- and crack-resistant plastic may improve the quality of our drinking water.

For disposable items, a perfect plastic material would be a polymer made from renewable resources, that degrades to its original non-toxic form. Plastics made from corn sugar are the most desirable in the industry at the moment.

The preliminary results of Prof. Kol's efforts are in, and the plastics that he and his team produce in the lab look and feel like polystyrene, which could be used for making drinking cups, for example. Rigid and transparent, the drinking cups currently only work for liquids under 122 degrees Fahrenheit, but they represent a first big step into greening plastics and the chemical industry.


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Contact: George Hunka
ghunka@aftau.org
212-742-9070
American Friends of Tel Aviv University
Source:Eurekalert  

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