Anionic Polymerization of Terpene Monomers: New Options for Bio-Based Thermoplastic Elastomers

2021 ◽  
Author(s):  
Christian Wahlen ◽  
Holger Frey
Keyword(s):  
Anionic Polymerization ◽  
Thermoplastic Elastomers

Recent Advances in Anionic Polymerization

1981 ◽  
Vol 54 (3) ◽  
pp. 627-640 ◽  
Author(s):  
Adel F. Halasa
Keyword(s):  
Carbon Dioxide ◽  
Ethylene Oxide ◽  
Polymer Chain ◽  
Anionic Polymerization ◽  
Living Polymerization ◽  
Thermoplastic Elastomers ◽  
Synthetic Polymer ◽  
Recent Advances

Abstract In summary, one can say that the versatility of living polymerization makes it a very useful and unique technique. Synthetic polymer chemists can utilize the lithium at the end of the chain to add polymer-like conjugated monomers, in order to tailor-make the polymer chain, or they can use chelating diamines to change the microstructure of the polymer chain. They can also run hydrogenation on anionically prepared polydienes to produce thermoplastic elastomers. They can transform anionically made polymer chain ends by adding ethylene oxide, carbon dioxide and halogens. This paper has emphasized recent advances in this field.

scholarly journals High Temperature Thermoplastic Elastomers Synthesized by Living Anionic Polymerization in Hydrocarbon Solvent at Room Temperature

2016 ◽  
Vol 49 (7) ◽  
pp. 2646-2655 ◽  
Author(s):  
Weiyu Wang ◽  
Ralf Schlegel ◽  
Benjamin T. White ◽  
Katherine Williams ◽  
Dimitry Voyloy ◽  
...  
Keyword(s):  
High Temperature ◽  
Anionic Polymerization ◽  
Room Temperature ◽  
Thermoplastic Elastomers ◽  
Living Anionic Polymerization ◽  
Hydrocarbon Solvent

Thermoplastic Elastomers

2000 ◽  
Author(s):  
Sabet Abdou-Sabet ◽  
Hans-Georg Wussow ◽  
Larry M. Ryan ◽  
Lawrence Plummer ◽  
Didier Judas ◽  
...  
Keyword(s):  
Thermoplastic Elastomers

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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