Mechanical Properties and Weathering Behavior of Polypropylene-Hemp Shives Composites

Table 2

Roughness parameters calculated from three different AFM height images from the same sample (30×30 μm²).

Sample	Ten point height, Sz (nm)	Root mean square, Sq (nm)	Average roughness, Ra (nm)
P3	4553.47 ± 282.97	1137.54 ± 151.18	913.18 ± 141.61
P3 (UV 300 h)	2988.60 ± 87.83	722.58 ± 116.23	568.97 ± 112.58
P3 (UV 600 h)	2352.06 ± 876.41	650.28 ± 170.49	516.55 ± 142.70