Citation: Xiu-bo Jiang, Qing-fei Zhang, Ai-hua He. Synthesis and Characterization of Trans-1,4-butadiene/Isoprene Copolymers: Determination of Sequence Distribution and Thermal Properties[J]. Chinese Journal of Polymer Science, ;2015, 33(6): 815-822. doi: 10.1007/s10118-015-1626-y shu

Synthesis and Characterization of Trans-1,4-butadiene/Isoprene Copolymers: Determination of Sequence Distribution and Thermal Properties

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

Received Date: 17 September 2014
Revised Date: 16 October 2014

Fund Project: This work was financially supported by the National Basic Research Program of China (No. 2015CB654700 (2015CB654706)), Shandong Province Natural Science Fund for Distinguished Young Scholars (No. JQ201213) and the National Natural Science Foundation of China (No. 51473083).

Two series of trans-1,4-poly(butadiene-co-isoprene) copolymers (TBIR) were prepared using the catalyst system TiCl4/MgTCl2-Al(i-Bu)3 at different reaction temperatures. All dyad and triads sequence distributions, the number-average sequence length and the sequence concentration of the copolymers were calculated according to 13C-NMR spectra. The influences of temperature and initial molar ratio of butadiene to isoprene (Bd to Ip) on the distribution of the chain segments in the TBIR copolymers were discussed. The correlation of copolymer compositions and thermal properties were also evaluated, which facilitated the understanding of controlling the degree of crystallinity and the transition temperature by changing Bd content and temperature.
- Trans-1,4-,
- Isoprene,
- Butadiene,
- Copolymer,
- Thermal properties
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