السلام عليكم ورحمة الله اتفضلوا ملف جميل بعنوان
Effect of polymer structure on the formation of degradation products Photodegradation of polystyrene


اتمنى ان يثريكم افادة باذن الله


الرابط (http://www.kfupm.edu.sa/publications/ajse/Articles/271C_02p.pdf)
Chemical engineering topic (http://carsnology.blogspot.com/2008/10/effect-of-polymer-structure-on.html)





car cut from polystyrene on our large cnc machine


http://www.premierpatterns.com/images/Photo-0018_edited.jpg