The calculation formulae which could be used to obtain diad concentration from the peak intensities of carbon spectra ,average block length ,average number of block and the microstructure composition of the molecular chain were derived .

• 推导出由峰强度求取二元组浓度、平均链段长度、链段平均数和分子链微观组成的计算公式,计算结果表明,不同胶样的序列结构有一定差别,乳聚SBR的微观组成即使十分接近,苯乙烯长嵌段含量也会有较大差别;