"Analysis of degree of benzene ring hydrogenation in hydrogenating styrene-conjugated diene block copolymer with proton nuclear magnetic resonance spectroscopy"

The microstructure and composition of styrene-conjugated diene block copolymer and its hydrogenation product hydrogenated styrene-conjugated diene block copolymer (HSBC) were determined by nuclear magnetic resonance spectroscopy, degree of benzene ring hydrogenation of HSBC was calculated and compared with the calculation result of ultraviolet spectrum. The results showed that compared with the ultraviolet spectrum, the nuclear magnetic resonance spectroscopy had the advantages of simple steps, fast and efficient, and calculated degree of benzene ring hydrogenation of HSBC was in good agreement with the calculation results of UV method.