Mechanical Properties and Weathering Behavior of Polypropylene-Hemp Shives Composites

Table 1

Carbonyl, vinyl and isotactic indexes of unweathered and weathered PP-hemp shives composites.

Sample	Carbonyl index	Vinyl index	Isotactic index
P1 (no UV)	0.157	0.094	1.0
P1 (UV 300 h)	0.333	0.125	0.6
P1 (UV 600 h)	0.510	0.131	0.4