Synthesis and Characterization of <italic style="font-style: italic">α</italic>-End Functionalized 3,4-Polyisoprene Using Fe(acac)3/IITP/Al<italic style="font-style: italic">i</italic>Bu3 Catalyst

Yu-Fan Sun; Ying-Nan Zhao; Shi-Liang Xu; Yao Yu; Liang Fang; Li-Hua Na; Qi Yang; Feng Wang; Heng Liu; Chun-Yu Zhang; Xue-Quan Zhang

doi:10.1007/s10118-025-3339-1

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Synthesis and Characterization of α-End Functionalized 3,4-Polyisoprene Using Fe(acac)₃/IITP/AlⁱBu₃ Catalyst

RESEARCH ARTICLE | Updated：2025-07-26

- Synthesis and Characterization of α-End Functionalized 3,4-Polyisoprene Using Fe(acac)₃/IITP/AlⁱBu₃ Catalyst
- Chinese Journal of Polymer Science Vol. 43, Issue 8, Pages: 1367-1374(2025)
- Affiliations：
  
  a.School of Polymer Science and Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
  b.Shandong Provincial College Laboratory of Rubber Material and Engineering, School of Polymer Science and Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
  c.Key Lab of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Lab of Rubber-plastics, School of Polymer Science and Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
- Author bio：
  
  cyzhang@qust.edu.cn
- Funds：
- DOI：10.1007/s10118-025-3339-1
  CLC：
- Received：06 March 2025，
  
  Revised：2025-03-28，
  
  Accepted：02 April 2025，
  
  Online First：20 June 2025，
  
  Published：01 August 2025
- Accepted：
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Sun, Y. F.; Zhao, Y. N.; Xu, S. L.; Yu, Y.; Fang, L.; Na, L. H.; Yang, Q.; Wang, F.; Liu, H.; Zhang, C. Y.; Zhang, X. Q. Synthesis and characterization of α-end functionalized 3,4-polyisoprene using Fe(acac)₃/IITP/AlⁱBu₃ catalyst. Chinese J. Polym. Sci. 2025, 43, 1367–1374 DOI: 10.1007/s10118-025-3339-1.

Yu-Fan Sun, Ying-Nan Zhao, Shi-Liang Xu, et al. Synthesis and Characterization of α-End Functionalized 3,4-Polyisoprene Using Fe(acac)₃/IITP/AlⁱBu₃ Catalyst[J]. Chinese Journal of Polymer Science, 2025, 43(8): 1367-1374. DOI: 10.1007/s10118-025-3339-1.
Sun, Y. F.; Zhao, Y. N.; Xu, S. L.; Yu, Y.; Fang, L.; Na, L. H.; Yang, Q.; Wang, F.; Liu, H.; Zhang, C. Y.; Zhang, X. Q. Synthesis and characterization of α-end functionalized 3,4-polyisoprene using Fe(acac)₃/IITP/AlⁱBu₃ catalyst. Chinese J. Polym. Sci. 2025, 43, 1367–1374 DOI: 10.1007/s10118-025-3339-1. DOI：

Yu-Fan Sun, Ying-Nan Zhao, Shi-Liang Xu, et al. Synthesis and Characterization of α-End Functionalized 3,4-Polyisoprene Using Fe(acac)₃/IITP/AlⁱBu₃ Catalyst[J]. Chinese Journal of Polymer Science, 2025, 43(8): 1367-1374. DOI: 10.1007/s10118-025-3339-1. DOI：

摘要

In this study

we present a novel approach for the direct construction of α-functionalized 3

4-polyisoprene through polymerization of polar monomers and isoprene monomer. The α-functionalized 3

4-polyisoprene was successfully synthesized via in-situ sequential polymerization using

the iron-based catalytic system (Fe(acac)

/IITP/Al

)

exhibiting high activity and resistance to polar monomers without requiring protection of polar groups

particularly hydroxyl groups. The structure of α

-functionalized 3

4-polyisoprene was confirmed by

H-NMR and

D DOSY spectra analysis.

Abstract

The synthesis of functionalized rubber copolymers is a topic of great research interest. In this study

we present a novel approach for the direct construction of

-functionalized 3

4-polyisoprene through polymerization of polar monomers and isoprene monomer. The

-functionalized 3

4-polyisoprene was successfully synthesized

via

in situ

sequential polymerization using the iron-based catalytic system (Fe(acac)

/IITP/Al

)

exhibiting high activity and resistance to polar monomers without requiring protection of polar groups. The structure of

-functionalized 3

4-polyisoprene was confirmed by proton nuclear magnetic resonance spectroscopy (

H-NMR) and two-dimensional diffusion-ordered spectroscopy (2D DOSY) spectra analysis. The introduction of polar groups

particularly hydroxyl groups

enhanced the hydrophilicity of the copolymer. This was evidenced by a decrease in the water contact angle from 106.9° to 96.4° with increasing hydroxyl content in the copolymer.

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⁰

Synthesis and Characterization of α-End Functionalized 3,4-Polyisoprene Using Fe(acac)3/IITP/AliBu3 Catalyst

DOI：10.1007/s10118-025-3339-1

摘要

Abstract

关键词

Keywords

references

Synthesis and Characterization of α-End Functionalized 3,4-Polyisoprene Using Fe(acac)₃/IITP/AlⁱBu₃ Catalyst