interfacial activity
2.The results show : (1)The surfactant SNHD has a very good interfacial activity. The interfacial tension could be reduced to ultra-low (10-3 mN/m) when the concentrations are varied from 0.05% to 0.3%.
3.The results showed that Cu existed in several kinds of valence and the photocatalytic activity of Cu/Sr_3Ti_2O_7 was superior to that of pure Sr_3Ti_2O_7. Cu+ and adsorbed oxygen can accelerate the interfacial electron transfer.
4.These discrepancies in fiber surface activity of T-800, F-12 and PBO lead to the differences in the mechanical adhesive property of composite interface. The interfacial shear strength (IFSS) of T-800 fiber is higher than that of F-12 fiber and IFSS of PBO fiber is the lowest.

