Abstract: Three kinds of well studied α/β compounded nucleating agents（NAs），phosphate/amide，sorbitol/amide，and phosphate/carboxylate were selected to investigate their influence on the crystallization kinetics，crystallization morphologies，and mechanical proprieties of isotactic polypropylene（iPP）. It can be summarized the key factor of affecting the α/β compounded NAs is the crystallization temperature（T_C）. The NA with higher T_C plays a leading role in the crystallization process. Competitive nucleation will occur when the difference of T_C between two NAs is not pronounced. According to this rule，the optimization method for compounding α and β NAs can be developed. An example of adjusting the stiffness and toughness of isotactic polypropylene based on different of α/β compound nucleating agents was employed.

Key words: isotactic polypropylene；crystallization；α/&beta, compounded nucleating agents

摘要： 综述了3类广泛应用的α/β复合成核剂对聚丙烯结晶动力学、结晶形态及宏观性能等方面影响的研究进展。总结了影响α/β复合成核剂调控聚丙烯结晶的主要因素在于两种成核剂的成核能力，具体表现为其成核聚丙烯结晶温度（T_C）的高低：T_C高的成核剂在聚丙烯结晶过程中起主导作用，T_C低的成核剂基本不起成核作用，当两者的T_C相接近时发生竞争成核。根据这一规律，找出了复合α、β两种成核剂的方法，并列举将其运用到调控聚丙烯的结晶过程中的实例。

关键词: 聚丙烯, 结晶, &alpha, /&beta, 复合成核剂