Also if you have questions and want some expert answers try heading to this website http://green-plastics.net and just post your question on the Q&A board, they will be able to help out with your question in a more timely manner!
Have you ever wondered if there is a more environmentally friendly way to make plastic with OUT using foreign oil? Currently, it is estimated that the worldwide production of petroleum based plastic is around 100 million tons annually, and that seven million barrels of petroleum are required PER DAY to produce that plastic ( info source ). What if we could take that number and cut it down to zero! This is all possible with the eco-friendly plastic of the future, and you can make some right now- OUT OF A POTATO! When I first discovered that you could do this, I used corn starch, water, and corn oil to make the plastic; I then made a science fair project out of it, won second place at my school, and won honorable mention (3-6 place) at the 2003 Regional Science Fair. The plastic I made for the science fair worked, but it dried out and became brittle in about a week. A few years later, I discovered an article describing a way to enhance it's plasticity by altering the chemical composition of the starch.
For this instructable, I will describe how to make plastic from scratch, by extracting starch from a potato, and processing it into a resin with household items. If you don't feel like taking the time to extract the starch from a potato, you can just use corn starch instead. This is a project for all you environmentalists, tree hungers, global warming believers (I am not one by the way), and especially you Al Gore.