| 초록 |
Among the in reactor blending of isotactic polypropylene (iPP) with other polyolefins, studies show that sequential polymerization is the most efficient method for impact strength improvement. In this study, Me2Si(2-Me-4-PhInd)2ZrCl2 was supported on SiO2/MgCl2 binary support after surface treatment with various aluminum alkyl compounds such as trimethylaluminum (TMA), triethylaluminum (TEAL), and triisobutylaluminum (TIBA). The synthesized metallocene bi-supported catalyst was used for the polymerization of ethylene and propylene, characterized using BET, ICP, XPS, and SEM in order to compare the different aluminum alkyl used. |
