As shown in Table 1 and Figure S2 , increasing the PP wt% in the virgin or recycled PP:HDPE blends results a decrease in the enthalpy of crystallisation of HDPE while PP generally presents an increasing trend.
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Thermomechanical Properties of Virgin and Recycled Polypropylene-High-Density Polyethylene Blends.
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However, there was a decreasing trend for the loss modulus for the virgin blends.