Hydrogenation of polystyrene‐b‐polybutadiene‐b‐polystyrene mediated by group (IV) metal metallocene complexes |
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| Authors: | Cheng‐Hung Chiang Jing‐Cherng Tsai |
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| Affiliation: | Department of Chemical Engineering, National Chung Cheng University, Chia‐Yi, Taiwan |
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| Abstract: | Various group (IV) metal complexes, namely bis(cyclopentadienyl) titanium dichloride, bis(pentamethylcyclopentadienyl) titanium dichloride, cyclopentadienyl titanium trichloride, pentamethylcyclopentadienyl titanium trichloride, bis(cyclopentadienyl) zirconium dichloride, and bis(cyclopentadienyl) hafnium dichloride, were used as the catalysts for mediating styrene–butadiene–styrene hydrogenation. The catalytic efficiency of these catalysts was examined. The results show that catalyst activity strongly depends on the chemical structure of the metallocene complex. We also found that trialkylaluminum has a significant influence on the hydrogenation activity and thermal stability of metallocene catalysts. © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2017 , 55, 2141–2149 |
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| Keywords: | hydrogenation metallocene catalysts styrene– butadiene– styrene (SBS) |
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