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  • Mixing rules for high densi...
    Stewart, Katherine M. E.; Stonecipher, Ethan; Ning, Haibin; Pillay, Selvum Brian

    Canadian journal of chemical engineering, September 2023, Volume: 101, Issue: 9
    Journal Article

    High‐density polyethylene (HDPE) and polypropylene (PP) blends of varying composition have been evaluated in an effort to establish a mixing rule for melt flow index (MFI). In addition, a previously established relationship between MFI and Mw¯ for linear polymers was also evaluated for these blends. It was found that a parabolic relationship existed between the composition (by weight fraction) and MFI and that the MFI and Mw¯ relationship held for this set of polymeric materials. Additionally, all properties and relationships were evaluated over five extrusion cycles, which showed minimal to no deviations over the five cycles.