Synthesis of Star-like Polybutadienes by a Combination of Living Anionic Polymerization and "Click" Coupling Method

Guang-chun Zhang; Jun Zheng; Feng Liu; Zhi-jie Zhang; Li Ma; Tao Tang

doi:10.1007/s10118-014-1448-3

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Synthesis of Star-like Polybutadienes by a Combination of Living Anionic Polymerization and "Click" Coupling Method

Updated：2021-06-21

- Synthesis of Star-like Polybutadienes by a Combination of Living Anionic Polymerization and "Click" Coupling Method
- Chinese Journal of Polymer Science Vol. 32, Issue 6, Pages: 731-742(2014)
- Affiliations：
  
  a.State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
  b.Graduate School of the Chinese Academy of Sciences, Beijing 100039, China
- Author bio：
  
  Li Ma (马丽), E-mail: mali@ciac.ac.cn
  **Tao Tang (唐涛), E-mail: ttang@ciac.ac.cn
- Funds：
- DOI：10.1007/s10118-014-1448-3
  CLC：
- Received：26 August 2013，
  
  Revised：2013-12-09，
  
  Accepted：31 December 2013，
  
  Published：2014-06
- Accepted：
Scan QR Code
Guang-chun Zhang, Jun Zheng, Feng Liu, et al. Synthesis of Star-like Polybutadienes by a Combination of Living Anionic Polymerization and "Click" Coupling Method[J]. Chinese Journal of Polymer Science, 2014, 32(6): 731-742.
DOI：

Guang-chun Zhang, Jun Zheng, Feng Liu, et al. Synthesis of Star-like Polybutadienes by a Combination of Living Anionic Polymerization and "Click" Coupling Method[J]. Chinese Journal of Polymer Science, 2014, 32(6): 731-742. DOI： 10.1007/s10118-014-1448-3.

摘要

Abstract

Three-arm and four-arm star-like polybutadienes (PBds) were synthesized

via

the combination of living anionic polymerization and the click coupling method. Kinetic study showed that the click reaction between the azido group terminated PBd-t-N

and the alkyne-containing multifunctional linking reagent was fast and highly efficient. All coupling reactions were fully accomplished within 40 min at 50 ℃ in toluene in the presence of the reducing agent Cu(0)

proven by

H-NMR

FTIR and GPC measurements. For the coupling reactions between the PBd-t-N

polymer and dialkyne-containing compound

the final conversion of the coupled PBd-PBd polymer was

. 97.0%. When a PBd-t-N

polymer was reacted with trialkyne-containing or tetraalkyne-containing compound

the conversion of three-arm or four-arm PBd was around 95.5% or 87.0%

respectively. Several factors influencing the coupling efficiency were studied

including the molecular weight of the initial PBd-t-N

arm numbers and the molar ratio of the azido group to the alkynyl group. The results indicated that the conversion of the target products would be promoted when the molecular weight of the PBd-t-N

was low and the molar ratio of the azido to alkynyl groups was close to 1.

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