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Preparation of polyethylene/lignin nanocomposites from hollow spherical lignin‐supported vanadium‐based Ziegler–Natta catalyst
Author(s) -
Wang Shuwei,
Feng Na,
Zheng Jiulai,
Yoon KeunByoung,
Lee Dongho,
Qu Minjie,
Zhang Xuequan,
Zhang Hexin
Publication year - 2016
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.3803
Subject(s) - lignin , catalysis , materials science , polyethylene , polymerization , ethylene , vanadium , nanocomposite , thermal stability , natta , polymer chemistry , chemical engineering , organic chemistry , polymer , chemistry , composite material , engineering , metallurgy
In the present article, a novel hollow spherical lignin‐supported vanadium‐based Ziegler–Natta catalyst was synthesized. The active centers of the obtained catalyst well dispersed in the lignin through the SEM‐EDX analysis. The resultant catalyst was investigated in ethylene polymerization and found to exhibit remarkable catalytic activity upon activation with ethylaluminium sesquichloride cocatalyst and ethyl trichloroacetate activator. During the polymerization, the lignin was gradually exfoliated by the polymerization force arising from the propagation of ethylene chain. The resultant PE/lignin nanocomposites preformed higher thermal stability compared to virgin PE. Copyright © 2016 John Wiley & Sons, Ltd.