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- Title
A IMPORTÂNCIA DA ORDEM DE ADIÇÃO DE INGREDIENTES NO PROCESSO DE MISTURA DA BORRACHA NATURAL (NR): UMA ANÁLISE QUALITATIVA POR MEIO DA MODELAGEM MOLECULAR.
- Authors
Moreira da Costa, Helson; Dutra Ramos, Valéria
- Abstract
The order of addition of ingredients in natural rubber elastomeric formulation was investigated using molecular modeling and a hypothetical adsorption process. Two sequences were evaluated, zinc oxide system (ZnO) and stearic acid system (C18), using AMBER force fields methodology. Theoretical data allow us to assume that, although there is no statistically significant difference between adsorption energies, C18 system does not seem to bring advantages in its adoption, while ZnO system only seems to be effective when the sequence suggested by the ASTM standard is followed. An apparently ideal addition order in ZnO system is suggested, but the nature of the adsorption process is changed, as well as disposition of the additives.
- Subjects
RUBBER; STEARIC acid; ZINC oxide; ELASTOMERS; ADDITIVES
- Publication
Revista Foco (Interdisciplinary Studies Journal), 2023, Vol 16, Issue 3, p1
- ISSN
1981-223X
- Publication type
Article
- DOI
10.54751/revistafoco.v16n3-145