| Study on Properties of Modified MVBRs Part 2.Study on Tg and Dynamic Mechanical Properties |
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| DOI： |
| Key Words: polybutadiene；MVBR；dynamic mechanical properties |
| Author Name | Affiliation | | Li Yang | Research Institute of Beijing Yanshan Petrochemical Co. | | Liu Huiming | Dalian University of Science and Technology | | Gu Mingchu | Dalian University of Science and Technology |
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| Abstract: |
| The Tg and the dynamic mechanical properties of four kinds of modified medium vinyl polybutadiene rubbers (MVBRs) including linear MVBR (L-MVBR)，star MVBR(SMVBR)，linear 1，4-1，2-stereodiblock MVBR(L-B-MVBR)and star 1，4-1，2-stereodiblock MVBR(S-B-MVBR)were systematically investigated.The results showed that L-B-MVBR had better dynamic mechanical properties and lower heat build-up；the star-branched structure and the increase of molecular weight and 1，2-polybutadiene content were benificial to form the microphase seperated structure；and the appropriate ratio of the 1，2-polybutadiene block to the 1，4-polybutadiene block resulted in a more remarkable micro-phase seperated structure. |
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