scholarly journals Anionic Polymerization Mechanism of Acrylonitrile Trimer Anions: Key Branching Point between Cyclization and Chain Propagation

2012 ◽  
Vol 116 (30) ◽  
pp. 7937-7942 ◽  
Author(s):  
Keijiro Ohshimo ◽  
Yoshiya Inokuchi ◽  
Takayuki Ebata ◽  
Koichi Ohno
Keyword(s):  
Anionic Polymerization ◽  
Chain Propagation ◽  
Polymerization Mechanism ◽  
Branching Point

Study the Influences of ZnEt2 on Ethylene Chain Transfer Polymerization

2012 ◽  
Vol 602-604 ◽  
pp. 672-675
Author(s):  
An Guo Xiao ◽  
Shi Biao Zhou ◽  
Qing Yun Zheng ◽  
You Ming Shen ◽  
Yong Bin Zhuan
Keyword(s):  
Ethylene Polymerization ◽  
Nickel Complex ◽  
Chain Transfer ◽  
Ion Pairs ◽  
Catalyst System ◽  
Chain Propagation ◽  
Polymerization Mechanism ◽  
System 1 ◽  
Chain Transfer Polymerization

The influences of ZnEt2 on ethylene chain transfer polymerization were investigated in detail and the polymerization mechanism was thoroughly analyzed. The results indicated that ZnEt2 contributed greatly to increase the activity of α-diimine nickel complex/ZnEt2/MAO(MAO: methylaluminoxane). It was striking that α-diimine nickel complex/ZnEt2 catalyst system (1/100 mol/mol) exhibited 8.0 ×104g/mol∙h activity, it was possible the formation of the ion pairs of Nickel and Zinc was convenient for ethylene chain propagation, however, the ion pairs were unstable in ethylene polymerization.

A New Living Emulsion Polymerization Mechanism:  Episulfide Anionic Polymerization

2002 ◽  
Vol 35 (23) ◽  
pp. 8688-8693 ◽  
Author(s):  
A. Rehor ◽  
N. Tirelli ◽  
J. A. Hubbell
Keyword(s):  
Emulsion Polymerization ◽  
Anionic Polymerization ◽  
Polymerization Mechanism

Anionic polymerization of .beta.-lactones initiated with alkali-metal alkoxides: reinvestigation of the polymerization mechanism

1992 ◽  
Vol 25 (7) ◽  
pp. 2017-2020 ◽  
Author(s):  
Piotr Kurcok ◽  
Marek Kowalczuk ◽  
Krystian Hennek ◽  
Zbigniew Jedlinski
Keyword(s):  
Alkali Metal ◽  
Anionic Polymerization ◽  
Metal Alkoxides ◽  
Polymerization Mechanism
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