Study on structure and properties of SSBR/SiO2 co‐coagulated rubber and SSBR filled with nanosilica composites |
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| Authors: | Xiao Liu Suhe Zhao |
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| Affiliation: | 1. Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing 100029, China;2. Key Laboratory for Nanomaterials, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China |
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| Abstract: | The morphological structure, glass transition, mechanical properties, and dynamic mechanical properties of star‐shaped solution‐polymerized styrene‐butadiene rubber (SSBR) synthesized by a multifunctional organic lithium initiator and SiO2‐SSBR composite (N‐SSBR) prepared through adding a small amount of nanosilica modified by silane coupling agent to star‐shaped SSBR synthetic solution and co‐coagulating, and their nanocomposites filled with 20 phr nanosilica were investigated, respectively. The results showed that the silica particles were well dispersed with nanosize in N‐SSBR, which glass‐transition temperature (Tg) was 2°C higher than SSBR. N‐SSBR/SiO2 nanocomposite exhibited lower Payne effect and internal friction loss, higher mechanical properties, and its Tg was 2°C higher than SSBR/SiO2 nanocomposite. N‐SSBR might promote the dispersion of nanosilica powder in matrix and could be applied to green tire tread materials. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008 |
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| Keywords: | dispersions glass transition morphology nanocomposites silicas |
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