Synthesis and characterization of end-functionalized solution polymerized styrene-butadiene rubber and study the impact of silica dispersion improvement on the wear behavior of the composite
| Autor: | Ghodratollah Hashemi Motlagh, Sadaf Saeedi Garakani, Majid Hassanabadi, Mohammad Najafi |
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| Rok vydání: | 2020 |
| Předmět: |
Tear resistance
Materials science Styrene-butadiene Polymers and Plastics Organic Chemistry Abrasive 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences chemistry.chemical_compound Polymerization chemistry Natural rubber visual_art visual_art.visual_art_medium Surface modification Composite material 0210 nano-technology Glass transition Dispersion (chemistry) |
| Zdroj: | Polymer Testing. 85:106431 |
| ISSN: | 0142-9418 |
| DOI: | 10.1016/j.polymertesting.2020.106431 |
| Popis: | Two end-functionalized solution polymerized styrene-butadiene rubber was synthesized through anionic polymerization for using in formulation of well-dispersed silica compounds with study the wear behavior of the vulcanizates. Polymerization and functionalization were analyzed and confirmed via FT-IR, GPC, and NMR analyses. Novel functionalization, using an amine-containing agent, improved the distribution of silica. With the fine dispersion of silica, the wear rate dropped; the correlations between vulcanizate abrasion resistance, hardness, tear strength, glass transition temperature, and the SEM micrographs of the worn surface were studied. The abrasive stick-slip process was the primary wear mechanism and pattern spacing was the least for amino-modified vulcanizates. Lower reinforcement caused deep grooves, scratches, and pits in the non-modified sample. The amino-functionalized samples had desirable SEM characteristics, low hardness, more dispersed silica with fewer agglomerates and higher tear strength, confirming the higher interaction of silica particles and rubber chains. |
| Databáze: | OpenAIRE |
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