behavior between the ethylene-rich phase domains and the PP matrix. This interfacial behavior was quantified using the interfacial relaxation time of the PCR-PP feedstocks. This three- parameter framework, including MFR, ethylene content, and interfacial relaxation time, not only can be used for PCR-PP feedstock evaluation as an input to recycling lines but also provides a sensitive tool to monitor the performance of different homogenizing modifications in recycling processes. Further details of this study and supporting references are available in Waste Management, Volume 220, Article 115586, published on 30 June 2026 (open access). Authors: 1. Milad Kianpisheh, Essi Sarlin: Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 589, FI-33014 Tampere, Finland 2. Tuan Anh Tran, Doris Machl Borouge International, Borealis Polyolefine GmbH, St. Peterstrasse 25, 4021 Linz, Austria
Figure 1: Survey of the conventional intrinsic indicators of different PCR-PP feedstocks.
Access full paper (QR code / DOI): 10.1016/j.wasman.2026.115586
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