Styrene is polymerized employing a free radical initiator in the presence of a styrene-diene block copolymer of the AB or AB(BA)n configuration to provide a polymer containing from about 15 to 30 weight percent diene units polymerized therein. The polymer contains polydiene domains in the form of rods and spheres having diameters of 70 nanometers or less.
苯乙烯在 AB 或 AB(BA)n 构型的
苯乙烯-二烯嵌段共聚物存在下,使用自由基
引发剂进行聚合,从而得到含有约 15-30 重量百分比二烯单元的聚合物。这种聚合物含有直径为 70 纳米或更小的棒状和球状聚二烯结构域。