Citation: Zhang Luo, Xiu-bo Jiang, Wei Yao. Synthesis of Well-defined Telechelic Trans-1,4-polyisoprene by Oxidative Cleavage[J]. Chinese Journal of Polymer Science, ;2016, 34(3): 359-366. doi: 10.1007/s10118-016-1746-z shu

Synthesis of Well-defined Telechelic Trans-1,4-polyisoprene by Oxidative Cleavage

Zhang Luo ¹ ,
Xiu-bo Jiang ^1,, ,
Wei Yao ¹

1.
Key Laboratory of Rubber-Plastics, Ministry of Education, Shandong Provincial, Key Laboratory of Rubber-Plastics, School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China

Corresponding author: Xiu-bo Jiang,
Received Date: 23 September 2015
Revised Date: 20 October 2015

Fund Project: This work was financially supported by the Natural Science Foundation of Shandong Province (No. ZR2014BQ022) and the National Natural Science Foundation of China (No. 51273100) and a Project of Shandong Province Higher Educational Science and Technology Program (No. J14LA12).

Synthesis of telechelic trans-1,4-polyisoprenes (TPI: trans-structure 95%) was evaluated based on two different methods of oxidative cleavage (indirect cleavage: first epoxidation of TPI, then the selective cleavage of epoxidized units in epoxidized trans-1,4-polyisoprene (ETPI) and direct cleavage of isoprene units in TPI). The influence of solvents and the ratio of oxidative agents was investigated by 1H-NMR and 13C-NMR. A series of well-defined telechelic TPI with double terminated functional groups and less side reaction (molecular weight distribution range: 1.96-2.26) were synthesized by indirect cleavage in chloroform. Telechelic TPI showed similar crystallization behavior with TPI and interesting cold crystallization behavior characterized by DSC.
- Trans-1,4-polyisoprene,
- Telechelic polymers,
- Degradation,
- Epoxidization
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