화학공학소재연구정보센터
Macromolecular Research, Vol.31, No.2, ---, February, 2023
Effects of addition of styrene-co-methacrylate ionomers neutralized with various monovalent cations on asphaltene dispersion in heavy oil
In this work we prepared poly(styrene-co-methacrylate) ionomers neutralized with three different monovalent cations and added these ionomers to heavy oil to determine how the ionomer affected asphaltenes dispersion in the heavy oil. First, it was found that ionomers neutralized with smaller-sized cations led to better dispersion of asphaltenes in heavy oil. Second, ionomers neutralized with smaller-sized cations were observed to slow the asphaltene aggregation process. Third, it was found that the concentration of the ionomer exhibiting the best asphaltene dispersibility depended on which cation neutralized the ionomer. The above results suggested that the strength of the interactions between the ions of the ionomer and the strength of the interactions between the cations of the ionomer and the functional groups of the asphaltenes were very important factors for the ionomers to act as effective asphaltene dispersants. The SAXS results also showed that the ionomer neutralized with smaller-sized cations induced asphaltene dispersion in heavy oil relatively well.