Polyisoprene Bearing Dual Functionalized Mini-blocky Chain-ends Prepared from Neodymium-mediated Coordinative Chain Transfer Polymerizations

Wei-Xin Wang; Wen-Peng Zhao; Jing Dong; Hua-Qiang Zhang; Feng Wang; Heng Liu; Xue-Quan Zhang

doi:10.1007/s10118-023-2953-z

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Polyisoprene Bearing Dual Functionalized Mini-blocky Chain-ends Prepared from Neodymium-mediated Coordinative Chain Transfer Polymerizations

RESEARCH ARTICLE | Updated：2023-04-21

- Polyisoprene Bearing Dual Functionalized Mini-blocky Chain-ends Prepared from Neodymium-mediated Coordinative Chain Transfer Polymerizations
- Chinese Journal of Polymer Science Vol. 41, Issue 5, Pages: 720-727(2023)
- Affiliations：
  
  a.Key Laboratory of Rubber-Plastics, Ministry of Education, Shandong Provincial Key Laboratory of Rubber-Plastics, Qingdao University of Science & Technology, Qingdao 266042, China
  b.Petrochemical Research Institute, PetroChina, Beijing 102206, China
  c.School of Chemical Engineering, Changchun University of Technology, Changchun 130012, China
- Author bio：
  
  zwp@qust.edu.cn(W.P.Z.)
  hengliu@qust.edu.cn(H.L.)
- Funds：
- DOI：10.1007/s10118-023-2953-z
  CLC：
- Received：17 November 2022，
  
  Revised：2023-1-2，
  
  Accepted：13 January 2023，
  
  Online First：03 March 2023，
  
  Published：01 May 2023
- Accepted：
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Wang, W. X.; Zhao, W. P.; Dong, J.; Zhang, H. Q.; Wang, F.; Liu, H.; Zhang, X. Q. Polyisoprene bearing dual functionalized mini-blocky chain-ends prepared from neodymium-mediated coordinative chain transfer polymerizations.Chinese J. Polym. Sci.2023,41, 720–727

Wei-Xin Wang, Wen-Peng Zhao, Jing Dong, et al. Polyisoprene Bearing Dual Functionalized Mini-blocky Chain-ends Prepared from Neodymium-mediated Coordinative Chain Transfer Polymerizations[J]. Chinese Journal of Polymer Science, 2023, 41(5): 720-727.
Wang, W. X.; Zhao, W. P.; Dong, J.; Zhang, H. Q.; Wang, F.; Liu, H.; Zhang, X. Q. Polyisoprene bearing dual functionalized mini-blocky chain-ends prepared from neodymium-mediated coordinative chain transfer polymerizations.Chinese J. Polym. Sci.2023,41, 720–727 DOI： 10.1007/s10118-023-2953-z.

Wei-Xin Wang, Wen-Peng Zhao, Jing Dong, et al. Polyisoprene Bearing Dual Functionalized Mini-blocky Chain-ends Prepared from Neodymium-mediated Coordinative Chain Transfer Polymerizations[J]. Chinese Journal of Polymer Science, 2023, 41(5): 720-727. DOI： 10.1007/s10118-023-2953-z.

摘要

Through neodymium-mediated coordinative chain transfer copolymerizaiton (CCTcoP)

polyisoprenes bearing dual hydroxylated mini-blocky chain-ends were prepared

via

a three-step strategy. The polymerization demonstrated features of CCTcoP

i.e.

quasi-living characteristic

tunable molecular weights

narrow polydispersities

and high atom economies. The polymers can be facilely modified to improve the hydrophilic properties.

Abstract

Through neodymium-mediated coordinative chain transfer copolymerizaiton (CCTcoP)

polyisoprenes bearing dual hydroxylated mini-blocky chain-ends were prepared

via

a three-step strategy. Kinetic studies revealed that

the polymerization demonstrated typical features of CCTcoP across the whole polymerization process

i.e

quasi-living polymerization characteristic

tunable molecular weights

narrow molecular weight distributions

and atom economies. Comparing to previously reported CCTP homopolymerization systems

the presence of oxygen-containing Ip

OAl

polar comonomer slowed down chain transfer rates obviously

rendering slightly higher molecular weights of the resultant PIps and smaller

(number of polymer chains per Nd atom) values. Moreover

to mimic the structure of natural rubber

the hydroxyl end groups can be facilely modified into phosphonate

amide

and UPy

whose structures were further confirmed by NMR spectra. Incorporation these functionalities could greatly improve the hydrophilic properties of the polymers

as revealed from the significantly reduced static water contact angles.

关键词

Keywords

references

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