Fabrication of polyethylene/graphene nanocomposites through in situ polymerization with a spherical graphene/MgCl₂-supported Ziegler-Natta catalyst

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• 作者：He-Xin Zhang^a ; ^b ; Eun-Bin Ko^a ; Jae-Hyeong Park^a ; Young-Kwon Moon^a ; Xue-Quan Zhang^b ; ^{xqzhang@ciac.ac.cn" class="auth_mail" title="E-mail the corresponding author} ; Keun-Byoung Yoon^a ; ^{kbyoon@knu.ac.kr" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Ziegler-Natta ; Spherical catalyst ; Polyethylene ; Graphene ; Nanocomposite
• 刊名：Composites Science and Technology
• 出版年：2016
• 出版时间：18 November 2016
• 年：2016
• 卷：136
• 期：Complete
• 页码：61-66
• 全文大小：1533 K

文摘

In this study, a spherical grapheme (G)/MgCl₂-supported Ti-based Ziegler-Natta catalyst was prepared by a facile spray-coagglomeration method. The effects of graphene on catalyst morphology, ethylene polymerization behavior, and polymer properties were investigated. The resultant product was spherical, and the G was well dispersed in the whole polyethylene (PE) matrix. In addition, the thermal stability and mechanical properties of PE were significantly enhanced with the introduction of a very small amount of G (0.09 wt%) due to good dispersion of the graphene fillers in the PE matrix. Thus, this work provides a facile approach for the production of high-performance PE.