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Synthesis, Characterization and Surface Activity of Alkyl m ‐Xylene Sulfonate Isomers
Author(s) -
Luan Huoxin,
Wu Wenxiang,
Cheng Jiecheng,
Yu Tao,
Qu Guangmiao,
Xu Yabin,
Li Guoqiao,
Gao Xiaoyu,
Li Anjun,
Yuan Dandan,
Tong Wei,
Li Zhong,
Liu Kang,
Liu Guoyu,
Ding Wei
Publication year - 2012
Publication title -
journal of surfactants and detergents
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.349
H-Index - 48
eISSN - 1558-9293
pISSN - 1097-3958
DOI - 10.1007/s11743-012-1358-8
Subject(s) - chemistry , alkyl , sulfonate , critical micelle concentration , surface tension , molecule , adsorption , pulmonary surfactant , m xylene , xylene , medicinal chemistry , structural isomer , organic chemistry , micelle , benzene , sodium , aqueous solution , biochemistry , physics , quantum mechanics
This paper deals with the synthesis of a series of alkyl m ‐xylene sulfonate isomers (with the m ‐xylene located at the eighth carbon atom along the long alkyl chain) by the Friedel–Crafts reaction, and the Grignard reaction followed by hydrogenation. The structures were confirmed by 1 H NMR. All analytical methods indicated high levels of purity of the isomers with the eighth carbon atom at the long alkyl chain. The critical micelle concentration (CMC), surface tension and maximum surface excess concentration at the CMC and area per molecule at the interface were determined. As the long alkyl chains increased the surfactant molecule tends to pack closely at the gas–liquid interface. Accordingly, the CMC decreased, the adsorption density increased, and the surface tension reduction was strengthened.