Social acceptability of recycled and bio-based polymers

It is also important to know whether poorly defined recycled polymers subjected to temperatures of around 200°C, which does not eliminate all volatile molecules, are particularly dangerous. Whereas toxicology usually studies the toxicity of 

The use of bio-based raw materials contributes to an increase in food prices, due to competition with industrial applications. Thus, in 2006, a 20% production of biofuels in the United States led to a 53% increase in the price of com, a 30.5% increase in the price of flour and an 11% increase in the price of soya. This use for non-food purposes can lead to famine in poorer countries [COE 07], and poses ethical problems. 

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