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PE/OMMT nanocomposites prepared by in situ polymerization approach: Effects of OMMT‐intercalated catalysts and silicate modifications
Author(s) -
Huang YingJuan,
Qin YaWei,
Dong JinYong,
Zhao Xutao,
Hu Xuteng
Publication year - 2011
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.34939
Subject(s) - montmorillonite , polymerization , catalysis , polymer chemistry , nanocomposite , ethylene , bromide , materials science , silicate , polymer , chemistry , organic chemistry , composite material
In this article, the surfactants, (2‐hydroxylethyl) octadecyl dimethylammonium nitrate (OH‐C18), hexadecyltrimethylammonium bromide(C16), and mixture of trimethylchlorosilane (TM) and OH‐C18 were ion‐exchanged with cations in the montmorillonite (MMT) to generate three organic MMTs (named as OH‐C18‐MMT, C16‐MMT, and MMMT), leading to different environments of catalyst species in MMT interlayer gallery. Et[Ind] 2 ZrCl 2 (abbreviated as EI) was supported on the above three types of OMMTs to prepare the PE/OMMT nanocomposites via in situ polymerization. By contrast, EI/MMMT showed higher activity than EI/OH‐C18‐MMT and EI/C16‐MMT under the same polymerization conditions. The other two types of catalysts, such as [( tert ‐Bu)NSi(Me 2 )C 5 Me 4 ]TiCl 2 (CGCT) and Bis[N‐(3‐ tert ‐butylsalicylidene)anilinato] titanium (IV) dichloride (FI) were also supported on the OH‐C18‐MMT for in situ ethylene polymerization. It was found that the activity of FI/OH‐C18‐MMT for ethylene polymerization was much lower than the other two corresponding catalysts under the similar reaction conditions. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012