Fracture Toughness of Vapor Grown Carbon Nanofiber-Reinforced Polyethylene Composites

Table 2

EWF parameters for neat PE and PE/VGCNF composites.

Samples	𝑤𝑒	𝛽𝑤𝑝	Ligament	𝑟^2	Total energy
	(kJ/m^2)	(kJ/m^2)	(mm)		(kJ/m^2)
PE
MP	0.4978	1.606	8.890	0.993	2.0799
MPEP at 10 RPM	0.7058	1.2122	9.017	0.995	1.918
MPEP at 20 RPM	0.9914	1.1704	8.128	0.991	1.8828
PE/VGCNFs (10% wt.)
MP	1.0156	0.2262	7.925	0.984	1.2418
MPEP at 10 RPM	1.6165	0.1216	8.255	0.980	1.7381
MPEP at 20 RPM	1.8531	0.1471	8.001	0.992	2.0002
PE/VGCNFs (20% wt.)
MP	0.7891	0.1588	8.357	0.980	0.9479
MPEP at 10 RPM	1.2015	0.0446	8.966	0.915	1.2461
MPEP at 20 RPM	1.3861	0.1012	8.636	0.977	1.4873