Citation: YOU Yi, DENG Yong-Shu, LI Er-Jun, PEI Xiao-Mei, ZHAO Jian-Xi. Hydrophobic Synergism between the Alkyl Tails of Gemini Surfactants during Adsorption and Aggregation[J]. Acta Physico-Chimica Sinica, ;2010, 26(08): 2200-2204. doi: 10.3866/PKU.WHXB20100643 shu

Hydrophobic Synergism between the Alkyl Tails of Gemini Surfactants during Adsorption and Aggregation

1.
Institute of Colloid and Interface Chemistry, College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350108, P. R. China

Received Date: 13 January 2010
Available Online: 13 May 2010
Fund Project: 国家自然科学基金(20673021, 20873024) (20673021, 20873024)福州大学教授基金(2008-XY-5)资助项目 (2008-XY-5)

The critical micelle concentration (cmc) and the concentration reducing 20 mN·m^-1 of water surface tension (pC₂₀) by the Gemini surfactant series (m-6-m) and the corresponding monomers (C_mTABr) were determined using surface tension measurements. Comparison between the active parameters indicates that the Gemini surfactants have a stronger micellization and adsorption ability than C_mTABr, which is attributed to the hydrophobic synergism between the alkyl tails of the Gemini surfactants. The effects of dissymmetry in the Gemini surfactants (12-6-m) on the micellization and adsorption were also discussed. The results showed that the Gemini surfactant with a symmetric structure is more effective in association and adsorption than that with a dissymmetric structure.
- Gemini surfactant,
- Hexamethylene spacer,
- Hydrophobic synergism between alkyl tails,
- Surface tension
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