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Recycled bottle-grade poly(ethylene terephthalate), PET, can be mixed with virgin resin in different concentrations to be used by the food packaging industry. This will contribute to the growth of mechanical recycling of PET, but it is important to have an experimental method to detect the presence of recycled polymer in a batch. Differential scanning calorimetry was used to study the influences of...
After a rigorous cleaning process, recycled food‐grade poly(ethylene terephthalate) (PET), can be mixed with virgin PET resin in different concentrations and used for packaging of soft drinks. Therefore, it is important to have an experimental method to distinguish the presence of recycled polymer in a batch and to check its “true quality.” One of the issues to be verified is the presence of inorganic...
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