Novel Sugar-Based Gemini Surfactants and Their Surface Properties

作者：Gan, Changsheng^*; Li, Hong; Cai, Kunliang

来源：Journal of Surfactants and Detergents, 2018, 21(6): 859-866.

DOI：10.1002/jsde.12187

• Gemini surfactants
• Surface activity
• Adsorption
• Micellization

A group of novel sugar-based gemini surfactants, N, N-bis(2-hydroxy-3-alkyloxylpropyl) -N, N-bis(gluconylamide)-ethylenediamine (alkyl: n-C8H17, n-C12H25, n-C14H29, n-C16H33), were synthesized and characterized. Their surface properties, including surface tension, , critical micelle concentration, CMC, maximum surface excess, ?(max), minimum area per molecule, A(min), and standard free energy of micellization and adsorption, Delta G(m)(0) and Delta G(ads)(0), were investigated. The members of this family could reduce the surface tension of water to approximately 20-25 mNm(-1) at the concentration level of 10(-5)molL(-1), considerably lower than that commonly achieved with monomeric surfactants. Their adsorption and aggregation behavior were further studied by means of dynamic light scattering and X-ray diffraction. The relationship of the aggregate size of the synthesized gemini surfactants with the length of the hydrocarbon chain and their concentration was discussed.

• 出版日期2018-11
• 单位合肥工业大学