Table 2.

Surface energy values (mJ/m²), including the total, γ_total, dispersive, γ^d and polar, γ^p components, estimated at 190°C.

	γ	γd	γp
GNP 14	48	41.7	4.8
PP20,a	20.6	20.1	0.53
EOC 20	17.5	15.7	1.9

^aEstimated according to the data provided in Ref ²⁰ , assuming 10 wt% PP-g-Py content in the PP.