Wednesday, 1 December 2010

Reflection - Green Plastics

How are these plastics being developed?
Green plastics are developed by taking chains on polyactic acid which join and make polyactic acid oligmers, then, due to a chemical reaction become lactide which then become the most manufactured type of green plastic, or PLA.
What makes these plastics green?
What makes plastics green is whatever substances they come from. They usually come from corn, sugar beet, and sugar corn. Those ones are biodegradable and natural, or in other words, green.
What where some of the issues mentioned with the packaging?
A problem that we could face is we could start using so much of those crops for plastic and then end up not having enough food. As well as that, while growing the crops we could end up using too much land. Also, because growing corn efficiently requires pesticides, we use oil and gas to use trucks which then emits carbon dioxide. Finally, a problem with these green plastics is that when they biodegrade and then give off methane.
How might these green plastics change packaging practices?
This packaging, although not perfect, could change our world a lot. It is very eco-friendly and could be very helpful so that there is not so much waste in the world. It might even help make there be less need for recycling!

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