Synthesis and characterization of trans-1,4-butadiene/isoprene copolymers: Determination of monomer reactivity ratios and temperature dependence |
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| Authors: | Qing-fei Zhang Xiu-bo Jiang Ai-hua He |
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| Affiliation: | 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
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| Abstract: | A series of trans-1,4-butadiene/isoprene copolymers were prepared using the catalyst system TiCl4/MgCl2-Al(i-Bu)3 with bulk precipitation technology at different temperatures. Monomers reactivity ratios were calculated based on the Kelen-Tüdös (K-T) method and the Mao-Huglin (M-H) method. The influence of temperature on copolymer composition and polymerization rate was discussed in detail. The increase of reaction temperature brought the decrease of butadiene reactivity ratio r Bd and supplied an effective adjustment on copolymers’ composition distribution. |
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| Keywords: | trans-1,4- Isoprene Butadiene Copolymer Reactivity ratio. |
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