Synthesis, characterization and crystallization kinetics of nanocomposites prepared by in situ polymerization of ethylene and graphene

被引：0
作者：
Farrukh Shehzad
Muhammad Daud
Mamdouh A. Al-Harthi
机构：
[1] King Fahd University of Petroleum and Minerals,Department of Chemical Engineering
[2] King Fahd University of Petroleum and Minerals,Center for Research Excellence in Nanotechnology (CENT)
来源：
Journal of Thermal Analysis and Calorimetry | 2016年 / 123卷
关键词：
Polyethylene; Graphene; Nanocomposites; Crystallization; Kinetics; Polymerization; Calorimetry;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
High-density polyethylene (HDPE)/graphene nanocomposites were synthesized by in situ polymerization. Zriconocene was used as a catalyst and methylaluminoxane as a co-catalyst. The effect of graphene on the activity of the catalyst and on chain microstructure, crystallization kinetics, mechanical and thermal characteristics of HDPE was investigated. Both the thermal and mechanical properties of HDPE were enhanced. The catalyst showed a slight reduction in the activity. The molecular weight of the polymer was analyzed by gel permeation chromatography, and a significant increase in weight-average molecular weight (MW) of HDPE was observed in the presence of graphene. Isothermal crystallization kinetics was studied by differential scanning calorimetry. The crystallization rate was increased with the addition of graphene. Microcalorimetric analysis indicated a major decrease in the peak decomposition temperature as well as the total heat released for the HDPE/graphene nanocomposites.
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页码：1501 / 1511
页数：10
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