Impact of diene addition on properties for ethylene-propylene copolymerization with rac-EtInd_2ZrCl_2/MAO catalyst

摘要

In the present study, the impact of diene addition during copolymerization of ethylene and propylene using a metallocene/MAO catalyst was investigated. It showed that with a small amount of diene added, the dienes (except for ENB) did not incorporate in the polymer backbone pronouncedly. However, the addition of dienes can alter the incorporation of ethylene and propylene in the polymer backbone according to different types of dienes used. The catalytic behaviors and yields were not significant changes with the addition of dienes. The characteristics of polymer obtained using ~(13)C NMR, SEM, and DSC were also further discussed in more detail.