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PE/OMMT nanocomposites prepared by in situ polymerization approach: Effects of OMMT-intercalated catalysts and silicate modifications.
- Source :
- Journal of Applied Polymer Science; Mar2012, Vol. 123 Issue 5, p3106-3116, 11p
- Publication Year :
- 2012
-
Abstract
- 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]<subscript>2</subscript>ZrCl<subscript>2</subscript> (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<subscript>2</subscript>)C<subscript>5</subscript>Me<subscript>4</subscript>]TiCl<subscript>2</subscript> (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 [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00218995
- Volume :
- 123
- Issue :
- 5
- Database :
- Complementary Index
- Journal :
- Journal of Applied Polymer Science
- Publication Type :
- Academic Journal
- Accession number :
- 67525217
- Full Text :
- https://doi.org/10.1002/app.34939