1. About Braskem.http://www.braskem.com.br/plasticoverde/eng/default.html.
2. About Coca Cola company.http://www.thecoca-colacompany.com/dynamic/press_center/2012/06/pet-collaborative.html(June 5,2012).
3. Annual Book of Standards; Standard D 6866; ASTM International: Philadelphia, PA,2012; Vol. 8.03.
4. About Federal Biopreferred Program.www.biopreferred.gov.
5. Annual Book of Standards; Standard D 7075; ASTM International: Philadelphia, PA,2012; Vol 8.03.