The variation of relative molecular mass and its distribution in the process of SBR and PS (HIPS) were determined by gel permeation chromatograph (GPC).

• 使用凝胶渗透色谱仪 (GPC)测定了丁苯橡胶 (SBR)及聚苯乙烯 (PS)和高冲聚苯乙烯 (HIPS)在不同生产工艺条件下的相对分子质量及其分布的变化。