Sanket Shah, Maharshi Gajjar, Harshad R. Patil, Virendrakumar Gupta
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引用次数: 0
Abstract
High-density polyethylene (HDPE) was synthesized using a Ziegler-Natta catalyst in two different ways: one step and two-step processes in a hexane slurry polymerization. The study explored the impact of adding hydrogen as a chain-terminating agent on various properties of the polymer, such as productivity of catalyst, molecular weight distribution variation, melt flow index (MFI) and resin average particle size distribution. The results revealed that increasing hydrogen concentrations led to the production of low-molar mass and high MFI polyethylene in the one-step process. Conversely, decreasing hydrogen concentration and increasing ethylene concentration produced higher molar mass/low MFI polyethylene in the same one-step process. In the two-step process, low-molar mass PE was formed first, followed by high-molar mass PE, resulting in broad molecular weight distribution (MWD). This research provides insights into controlling the molecular weight of polyethylene in slurry polymerization processes, which is significant for industrial polymerization technology.
期刊介绍:
Polymer Science, Series B is a journal published in collaboration with the Russian Academy of Sciences. Series B experimental and theoretical papers and reviews dealing with the synthesis, kinetics, catalysis, and chemical transformations of macromolecules, supramolecular structures, and polymer matrix-based composites (6 issues a year). All journal series present original papers and reviews covering all fundamental aspects of macromolecular science. Contributions should be of marked novelty and interest for a broad readership. Articles may be written in English or Russian regardless of country and nationality of authors. All manuscripts are peer reviewed