Essays about: "polymer discoloration"

Found 2 essays containing the words polymer discoloration.

1. 1. The discoloration of polyethylene obtained from chemical separation of laminates: Investigating additives and other potential causes

   University essay from Lunds universitet/Förpackningslogistik

   Author : Can Feng; [2021]
   Keywords : Delamination; multilayered packaging; polymer discoloration; plastic film; recycling; Technology and Engineering;

   Abstract : PolyAl, the material composed of laminated polyethylene (PE) films and aluminum (Al) in carton, is a challenge in recycling due to the strong adhesion of the layers and the low value of the end products. In Europe, recent efforts to improve the circularity of carton packages include the chemical separation of PolyAl, in order to obtain higher values of the PE and Al separately. READ MORE

3. 2. Chemical Modification of NFC: Development of Renewable Barriers for Packaging Applications

   University essay from KTH/Skolan för kemivetenskap (CHE)

   Author : Jesper Pettersson; [2012]
   Keywords : Packaging; nanofibrillated cellulose NFC ; polymer modification; grafting; biocomposite;

   Abstract : Globalization and centralization have resulted in prolonged transportation time between producer and consumer, and thus put more demand on the perseveration of a product for longer duration and protect it from oxidation. The presence of oxygen in packages severely foreshortens the storage life as it yield losses of nutrients and allow microbial growth, which can cause changes in smell, taste as well as discoloration. READ MORE