Recycling of plastics

Plastics are composed of macromolecules in the same way that living creatures in nature are. Nature should therefore be employed as an example for these materials. A brief review is given of the recycling methods that are being applied to other construction materials, as well as a presentation and discussion of the methods applied to plastics and the benefits involved. In order to show the current state in the discussions, the German situation is taken as an example here. Since Central Europe is particularly overcrowded, this situation is very oppressive. The methods under review are divided under certain aspects. The criteria are first, which sort of waste is producted (pure or mixed), second, the class of materials and, third, the physical or chemical method employed. Also economic efficiency is being estimated for all the cases following the latest research results. Finally, an innovative consideration is introduced which is based on the principles of nature, in a way following the example of nature by...