Influence of Cationic Surfactants on the Crystallization of Cis‐ and Trans‐Isomers. Issue 5 (21st May 2018)

• Record Type: Journal Article
• Authors: Yu, Qiushuo; Qiao, Xiaoyan; Qi, Min; Li, Xiaorui
• Is Part Of: Journal of surfactants and detergents. Volume 21:Issue 5(2018)
• Page Start: 625
• Page End: 634
• Publication Date: 2018-05-21
• Subjects: Cis‐ and trans‐isomers -- Fumaric acid -- Maleic acid -- Crystallization -- Surfactants; Surface active agents -- Periodicals; Detergents -- Periodicals; 668.1
• DOI: 10.1002/jsde.12044
• Languages: English
• ISSNs: 1097-3958

Abstract

Abstract: The crystals of cis‐ and trans‐isomers present in principle similar chemical groups on their respective crystal faces. Here, the crystallization of cis‐ and trans‐isomers (maleic acid and fumaric acid) in an aqueous solution containing cationic surfactants with different hydrophobic chains (the long hydrophobic chains of dodecyltrimethylammonium bromide < cetyltrimethylammonium bromide < trimethylstearylammonium bromide) was investigated. Results showed that the surfactants presented different effects on the crystallization of cis‐ and trans‐isomers. For trans‐isomers (fumaric acid), the surfactants with longer hydrophobic chains or higher solution concentrations will favor a wider metastable zone width (MZW) and a greater morphology change. By contrast, both the MZW and morphology development of cis‐isomers (maleic acid) were not affected by these surfactants. The chemical groups on crystal faces, surface grooves, and molecular polarity were compared to reveal the different influences of surfactants on the crystallization of cis‐ and trans‐isomers.