I have data of SEBS surface tension and I want to know maleication (about 1.84%, in deed Kraton FG 1901X) how much quantitatively change the surface tension of SEBS?
To my knowledge and experience, the surface energy of low content grafted polymers is not much different from the neat polymers. For example PP-grafted (10.1016/j.compscitech.2006.03.014) or PE-grafted (Handbook of Engineering Polymeric Materials, P 522). In your case, I think the main concern is the surface energy of SEBS by itself! As a block copolymer, SEBS can exhibit different surface energies depending on its molecular weight and block length ratio.