A preparation method for well-defined crystallites of Mgcl2-supported Ziegler-Natta catalysts and their observation by AFM and SEM

被引：50

作者：

Andoni, Adelaida

Chadwick, John C.

Niemantsverdriet, Hans J. W.

Thuene, Peter C.

机构：

[1] Eindhoven Univ Technol, Schuit Inst Catalysis, NL-5600 MB Eindhoven, Netherlands

[2] DPI, NL-5600 AX Eindhoven, Netherlands

[3] Eindhoven Univ Technol, Polymer Chem Lab, NL-5600 MB Eindhoven, Netherlands

来源：

MACROMOLECULAR RAPID COMMUNICATIONS | 2007年 / 28卷 / 14期

关键词：

atomic force microscopy (AFM); morphology; preparation method; scanning electron microscopy; Ziegler-Natta polymerization;

D O I：

10.1002/marc.200700222

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A method for the preparation of well-defined crystallites of MgCl2-supported Ziegler-Natta catalysts on Si wafers has been developed. This has been achieved by the spin-coating of a MgCl2 solution onto a flat Si wafer, followed by controlled crystal growth to give well-defined MgCl2 . nEtOH crystallites. The growth of the crystallites on the flat silica facilitates their characterization using electron and scanning probe microscopy. The relative proportions of 120 degrees and 90 degrees edge angles indicate the preference for the formation of a particular crystallite face for the MgCl2. Polyethylene has been identified to be formed on the lateral faces of the crystallite.

引用

页码：1466 / 1471

页数：6

共 23 条

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