Linseed cake was purchased from a local supplier and fractioned using an Analysette sieve shaker (Fritsch, Weimar, Germany) equipped with a 630 μm mesh. To investigate the influence of linseed oil on the tribological properties of the composites, the filler was subjected to partial defatting in acetone. As a result of the procedure described in our previous study [19 (link)], 5 grades of linseed cake with 0.9, 4.6, 17.7, 30.4 and 39.8 wt % of natural oil were obtained and used to produce the composites.
A multipurpose PLA grade Ingeo 2500HP (Natureworks, Minnetonka, MN, USA) characterized by a density of 1.24 g/cm3 and melt flow index of 8 g/10 min (210 °C, 2.16 kg) was chosen as the matrix of the composites.
A multipurpose PLA grade Ingeo 2500HP (Natureworks, Minnetonka, MN, USA) characterized by a density of 1.24 g/cm3 and melt flow index of 8 g/10 min (210 °C, 2.16 kg) was chosen as the matrix of the composites.
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