Me 2 Si(2-Me-4-pbind) 2 ZrCl 2 supported on SiO 2 /MgCl 2 binary support was prepared for the preparation of heterophasic copolymer of polypropylene. The bi-support underwent surface treatment with various alkyl aluminum compounds such as trimethylaluminum (TMA), triethylaluminum (TEAL), and triisobutylaluminum (TIBA) before supporting the metallocene catalyst for 3 or 24 hours and were used for homopolymerization. It was notable that the generated SiO 2 /MgCl 2 bi-support had lower surface area, pore volume and size as compared to the conventional SiO 2 . Impact polypropylene copolymers (IPCs) were obtained using two-step polymerization in one reactor with the presence of metallocene catalyst supported on SiO 2 . Propylene was polymerized in the reactor to produce the iPP matrix followed by polymerization of ethylene resulting to heterophasic material. It is apparent that the molecular weight of the polymer increased with longer PE polymerization time and as the polymerization time was more than 40 min, PP peak appeared near 147.9–149.2 °C, and a new peak emerged at 116.9–119.9 °C which could be attributed to the melting temperature of iPP crystallites and a less intense peak to either chains of ethylene-propylene copolymers. SEM images also confirmed that spherical PE particles were deeply embedded in the crystalline PP matrix and a large amount was produced as the polymerization time of the second stage ethylene polymerization was increased.

中文翻译：

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多相丙烯共聚物与负载在 SiO2 和 SiO2-MgCl2 载体上的 Me2Si(2-Me-​​4-PhInd)2ZrCl2 的聚合

制备了负载在SiO 2 /MgCl 2 二元载体上的Me 2 Si(2-Me-​​4-pbind) 2 ZrCl 2 以制备聚丙烯的多相共聚物。双载体在负载茂金属催化剂3或24小时之前用各种烷基铝化合物如三甲基铝(TMA)、三乙基铝(TEAL)和三异丁基铝(TIBA)进行表面处理并用于均聚。值得注意的是，与常规SiO 2 相比，生成的SiO 2 /MgCl 2 双载体具有更低的表面积、孔体积和尺寸。抗冲聚丙烯共聚物 (IPC) 是在一个反应​​器中使用两步聚合获得的，存在负载在 SiO 2 上的茂金属催化剂。丙烯在反应器中聚合生成 iPP 基质，然后乙烯聚合生成多相材料。很明显，聚合物的分子量随着 PE 聚合时间的延长而增加，当聚合时间超过 40 min 时，PP 峰出现在 147.9-149.2 °C 附近，在 116.9-119.9 °C 处出现一个新的峰归因于 iPP 微晶的熔化温度和乙烯-丙烯共聚物任一链的强度较低的峰。SEM 图像还证实球形 PE 颗粒深深嵌入结晶 PP 基体中，并且随着第二阶段乙烯聚合的聚合时间的增加而产生大量。很明显，聚合物的分子量随着 PE 聚合时间的延长而增加，当聚合时间超过 40 min 时，PP 峰出现在 147.9-149.2 °C 附近，在 116.9-119.9 °C 处出现一个新的峰归因于 iPP 微晶的熔化温度和乙烯-丙烯共聚物任一链的强度较低的峰。SEM 图像也证实球形 PE 颗粒深深嵌入结晶 PP 基体中，并且随着第二阶段乙烯聚合的聚合时间的增加而产生大量。很明显，聚合物的分子量随着 PE 聚合时间的延长而增加，当聚合时间超过 40 min 时，PP 峰出现在 147.9-149.2 °C 附近，在 116.9-119.9 °C 处出现一个新的峰归因于 iPP 微晶的熔化温度和乙烯-丙烯共聚物任一链的强度较低的峰。SEM 图像也证实球形 PE 颗粒深深嵌入结晶 PP 基体中，并且随着第二阶段乙烯聚合的聚合时间的增加而产生大量。9 °C，这可能是由于 iPP 微晶的熔化温度和乙烯-丙烯共聚物任一链的强度较低的峰。SEM 图像也证实球形 PE 颗粒深深嵌入结晶 PP 基体中，并且随着第二阶段乙烯聚合的聚合时间的增加而产生大量。9 °C，这可能是由于 iPP 微晶的熔化温度和乙烯-丙烯共聚物任一链的强度较低的峰。SEM 图像也证实球形 PE 颗粒深深嵌入结晶 PP 基体中，并且随着第二阶段乙烯聚合的聚合时间的增加而产生大量。