Solvent effect on the morphology of the bee: structure observed by atomic force microscopy on bitumen sample

Materials Research

Bianca Pizzorno Backx²  Renata Antoun Simão²  Erico Rodrigues Dourado²  Leni Figueiredo Mathias Leite¹ 

[1] ,Universidade Federal do Rio de Janeiro Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia Departamento de Engenharia Metalúrgica e de MateriaisIlha do Fundão Rio de Janeiro ,Brazil

关键词: AFM;    bitumen;    asphaltene;    nanostructures;   

DOI  :  10.1590/1516-1439.236113

来源: SciELO

【 摘 要 】

The objective of this work was to characterize the asphaltic cement penetration grade 30/45 (CAP 30/45) based on the morphology of nanostructures called "bee" structure observed and its modification when the binder was diluted in heptanes or toluene. The morphology of CAP30/45, toluene and heptane films was studied by Atomic Force Microscopy (AFM) tapping mode and showed typical "bee" structure in asphaltic cement films, but this structure is not visible on the other films. While, toluene completely dissolved the bees, films attacked with heptane still presented some structures left.

【 授权许可】

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