Metallocene catalysis in the complex-radical polymerization of methyl methacrylate

被引：11
|
作者：
Sigaeva, N. N. [1 ]
Friesen, A. K. [1 ]
Nasibullin, I. I. [1 ]
Ermolaev, N. L. [2 ]
Kolesov, S. V. [1 ]
机构：
[1] Russian Acad Sci, Ufa Sci Ctr, Inst Organ Chem, Ufa 450054, Bashkortostan, Russia
[2] Russian Acad Sci, Inst Appl Phys, Nizhnii Novgorod 603600, Russia
来源：
KINETICS AND CATALYSIS | 2012年 / 53卷 / 04期
关键词：
Benzoyl Peroxide; Titanocene Dichloride; Methyl Methacrylate Polymerization; Acetylferrocene; Zirconocene Dichlo Ride;
D O I：
10.1134/S0023158412040118
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The initiation stage of methyl methacrylate polymerization in the presence of benzoyl peroxide-metallocene (MC) systems is considered, with MC = Cp2Fe, (C5Me5)(2)Fe, (AcC5H4)(C5H5)Fe, Cp2TiCl2, Cp2ZrCl2, and (C5Me5)(2)ZrCl2. The decomposition of benzoyl peroxide in the presence of a metallocene proceeds via the formation of its complex with the metallocene. The catalytic effect of the metallocenes on the initiation of methyl methacrylate polymerization is due to the formation of a metallocene-benzoyl peroxide complex and its decomposition yielding primary radicals. The chain propagation stage is metallocene-dependent, which is explained by the formation of complex sites. Their formation pathway and structures are analyzed using quantum-chemical calculations.
引用
收藏
页码：470 / 476
页数：7
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