Anionic polymerization of N ,N -dialkyl-2-methylenebut-3-enamide: Effect of alkyl substituents on polymerization behavior

2010 ◽  
Vol 48 (17) ◽  
pp. 3714-3721 ◽  
Author(s):  
Katsuhiko Takenaka ◽  
Natsuyo Shibata ◽  
Akihiko Oshikiri ◽  
Masamitsu Miya ◽  
Hiroki Takeshita ◽  
...  
Keyword(s):  
Anionic Polymerization ◽  
Polymerization Behavior

Anionic Polymerization Behavior of α-Methylene-N -methylpyrrolidone

2013 ◽  
Vol 323 (1) ◽  
pp. 86-91 ◽  
Author(s):  
Takashi Ishizone ◽  
Keita Kitazawa ◽  
Takashi Suzuki ◽  
Susumu Kawauchi
Keyword(s):  
Anionic Polymerization ◽  
Polymerization Behavior

scholarly journals Anionic Polymerization of Vinylsilanes III. Polymerization Behavior of Trimethylvinylsilane

1991 ◽  
Vol 23 (11) ◽  
pp. 1377-1382 ◽  
Author(s):  
Jun-ichi Oku ◽  
Takashi Hasegawa ◽  
Toshio Takeuchi ◽  
Mikio Takaki
Keyword(s):  
Anionic Polymerization ◽  
Polymerization Behavior

The anionic polymerization of cyanogen

1966 ◽  
Vol 31 (1) ◽  
pp. 243-251 ◽  
Author(s):  
J. Peška ◽  
M. J. Beneš ◽  
O. Wichterle
Keyword(s):  
Anionic Polymerization

Mechanism of the propagation step in the anionic polymerization of styrene

1980 ◽  
Vol 45 (4) ◽  
pp. 1047-1055 ◽  
Author(s):  
Miroslav Kašpar ◽  
Jiří Trekoval
Keyword(s):  
Experimental Data ◽  
Induction Period ◽  
Anionic Polymerization ◽  
Reactive Intermediate ◽  
Coordination Polymerization ◽  
Kinetic Dependence ◽  
Mathematical Solution ◽  
Slow Reaction

The paper is dealing with an investigation of the kinetic dependence of the propagation step in the anionic coordination polymerization of styrene in benzene at 303 K with "living" oligostyryllithium as initiator at the onset of the reaction. A short but distinct induction period was found, indicating a preceding slow reaction leading to the formation of a reactive intermediate, which behaves as the initiator of the reaction. Using results obtained in the first paper of this series, a new mechanism of propagation has been suggested, the mathematical solution of which is correlated with experimental data.

Kinetic Modelling of Anionic Polymerization Involving a Dynamic Equilibrium between Two Growth Centres with Different Growth Rates

1993 ◽  
Vol 58 (10) ◽  
pp. 2349-2361 ◽  
Author(s):  
Jaromír Jakeš
Keyword(s):  
Molecular Weight ◽  
Growth Rates ◽  
Anionic Polymerization ◽  
Dynamic Equilibrium ◽  
Kinetic Modelling ◽  
Polymerization Time ◽  
Fast State ◽  
Growth State ◽  
In The Beginning ◽  
Growth Centres

Kinetic modelling of the molecular weight distribution (MWD) of polymer obtained by an anionic polymerization with two types of growth centres in a dynamic equilibrium, having different growth rates and lifetimes comparable to the polymerization time, was made for low monomer conversions. On the basis of distribution of the growth centres according to the total time spent in the fast growth state, it was shown that MWD of the resulting polymer are mostly bimodal at the beginning of the polymerization and change to unimodal MWD at sufficiently high polymerization degrees depending on the equilibrization rate. When all centres are in the fast state in the beginning, MWD are essentially unimodal throughout. A hint of trimodality is observed in some cases, in an extent hardly detectable in real chromatograms. Hence, a polymodal MWD can be explained only when more than two growth centres with different growth rates are assumed.

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