The Compatibilization Effects of Alkylated-grafted-Graphene Oxide on Polypropylene/Polystyrene Blends

Table 3

Interfacial tensions of component couples.

Component couple	Interfacial tension (mN m^−1); (harmonic-mean equation)	Interfacial tension (mN m^−1); (geometric-mean equation)
PP/PS	3.07	1.66
Modified graphene/PP	0.28	0.14
Modified graphene/PS	4.77	2.77