| Effect of Solvent Extraction on SEM Imaging of Vulcanizate Sample |
| Received:December 30, 2019 Revised:December 30, 2019 |
| DOI：10.12136/j.issn.1000-890X.2020.06.0466 |
| Key Words: SEM；vulcanizate；silica；frozen section；solvent extraction；filler dispersion |
| Author Name | Affiliation | E-mail | | ZHANG Hongxia* | EVE Rubber Institute Co. ，Ltd | zhanghx@everi.com.cn | | ZHANG Hao | EVE Rubber Institute Co. ，Ltd | | | YU Xiaobo | EVE Rubber Institute Co. ，Ltd | | | ZHAO Guo | EVE Rubber Institute Co. ，Ltd | | | LIU Junxia | EVE Rubber Institute Co. ，Ltd | | | ZHANG Xiubin | EVE Rubber Institute Co. ，Ltd | |
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| Abstract: |
| In this study, the effect of solvent extraction on scanning electron microscope（SEM） imaging of vulcanizate samples was studied by taking SBR/BR blend（vulcanizate） filled with silica as an example.The vulcanizate was extracted with toluene and acetone，then frozen and sectioned，and the sectioned samples were analyzed by SEM to evaluate the dispersion of the filler in the vulcanizate. The results showed that，in SEM analysis，without solvent extraction of vulcanizate，some areas on the surface of the sample were covered by precipitating filling oil and other additives，which affected the judgment of filler dispersion of the vulcanizate. When solvent such as toluene with weak polarity or acetone with strong polarity was used to extract the vulcanizate at different temperatures，the influence of other additives precipitated from the vulcanizate could be eliminated，and the imaging effect of the sample was improved significantly，so the dispersion of the fillers on the sample surface could be well observed. In addition，the solvent extraction temperature had no significant effect on SEM imaging of the sample. |
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