Citation: Antoine Forens, Kevin Roos, Charlotte Dire, Benoit Gadenne, Stéphane Carlotti. Anionic Polymerization of Butadiene Using Lithium/Potassium Multi-metallic Systems: Influence on Polymerization Control and Polybutadiene Microstructure[J]. Chinese Journal of Polymer Science, ;2020, 38(4): 357-362. doi: 10.1007/s10118-020-2355-4 shu

Anionic Polymerization of Butadiene Using Lithium/Potassium Multi-metallic Systems: Influence on Polymerization Control and Polybutadiene Microstructure

a.
Univ. Bordeaux, CNRS, Bordeaux INP, LCPO, UMR 5629, F-33600, Pessac, France
b.
MFP Michelin, Centre de Technologie/Ladoux, 23 Place des Carmes Déchaux, 63040 Clermont-Ferrand cedex 9, France

Corresponding author: Stéphane Carlotti, carlotti@enscbp.fr
Received Date: 15 July 2019
Revised Date: 2 September 2019
Available Online: 18 November 2019

Thermal, mechanical, and viscoelastic properties of polybutadiene-based rubber materials are highly dependent on polybutadiene microstructure. The use of polar modifier in association with alkyllithium is a well-known method to obtain polybutadiene with a high vinyl content. Another approach is to use bimetallic initiating species such as alkyllithium combined to heavier alkali metal alkoxide (RONa, ROK…). The polymerization control is nevertheless not achieved and several parameters were found to influence it. Using bimetallic initiating systems based on alkyllithium and a potassium alkoxide, alkyllithium structure, initiator preformation time, and initiator composition were identified as parameters influencing the anionic polymerization process of butadiene and/or polybutadiene microstructure. In addition, the use of trimetallic systems based on alkyllithium, potassium alkoxide, and alkylaluminum was investigated in order to prevent side reactions regardless of the [K]/[Li] ratio and of the initiator preformation time.
- Polybutadiene,
- Anionic polymerization,
- Microstructure,
- (Multi)metallic systems,
- Lithium/potassium-based systems
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  Worsfold, D. J.; Bywater, S. Lithium alkyl initiated polymerization of isoprene. Effect of cis/trans isomerization of organolithium compounds on polymer microstructure. Macromolecules 1978, 11, 582−586. doi: 10.1021/ma60063a030
24. [24]
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25. [25]
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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Anionic Polymerization of Butadiene Using Lithium/Potassium Multi-metallic Systems: Influence on Polymerization Control and Polybutadiene Microstructure

References

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通讯作者: 陈斌, bchen63@163.com