In this paper, three sulfonate-containing gemini surfactants, sodium 1,1'-(4,4'-methylenebis(4,1-phenylene))bis(1-oxooctane-2-sulfonate) (C8-M1-C8), sodium 1,1'-(4,4'-(ethane-1,2-diyl)bis(4,1-phenylene))bis(1-oxooctane-2-sulfonate) (C8-M2-C8), sodium 1,1'-(4,4'-methylenebis(4,1-phenylene))-bis(1-oxododecane-2-sulfonate) (C12-M2-C12), were synthesized and characterized with FT-IR, 1H NMR and MS. Furthermore, interaction between a cationic cellulose-based polyelectrolyte, PQ-10, and gemini surfactants were investigated by surface tension, turbidity, flow and low-amplitude oscillation rheology analysis. For comparing, the interaction of their corresponding monomeric counterpart sodium dodecyl sulfate (SDS), sodium 1-octanesulfate (SOS) was also studied. Results showed that the concentration value at T1, defined as critical surface complex concentration, for the PQ-10/surfactant was in order of PQ-10/C8-M2-C8> PQ-10/C8-M1-C8 > PQ-10/C12-M2-C12. Precipitation appeared at low concentration for Gemini surfactants than their monomeric counterparts, and for the gemini surfactants with shorter spacer or longer hydrocarbon chain. The increase/decrease of the crossover frequency (ωc) (the relaxation time, τc) for PQ-10/C12-M2-C12 indicated the formation/collapse of network structures, while PQ-10/SDS showed no obvious change.

中文翻译：

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阳离子纤维素/双子表面活性剂的溶液和流变性质：烷基链和间隔基长度的影响。

在本文中，三种含磺酸盐的双子表面活性剂1,1'-（4,4'-亚甲基双（4,1-亚苯基））双（1-氧辛烷-2-磺酸钠）（C8-M1-C8） 1,1'-（4,4'-（乙烷-1,2-二基）双（4,1-亚苯基））双（1-氧辛烷-2-磺酸钠）（C8-M2-C8）钠1合成了1,1'-（4,4'-亚甲基双（4,1-亚苯基））-双（1-氧十二烷-2-磺酸酯）（C12-M2-C12），并用FT-IR，1H NMR和多发性硬化症。此外，通过表面张力，浊度，流动性和低振幅振荡流变学分析，研究了阳离子纤维素基聚电解质PQ-10和双子表面活性剂之间的相互作用。为了进行比较，还研究了它们相应的单体对应的十二烷基硫酸钠（SDS），1-辛烷硫酸钠（SOS）的相互作用。结果表明，在T1的浓度值，对于PQ-10 /表面活性剂，定义为临界表面配合物浓度的顺序为PQ-10 / C8-M2-C8> PQ-10 / C8-M1-C8> PQ-10 / C12-M2-C12。Gemini表面活性剂比单体表面活性剂的浓度低，而间隔物较短或烃链较长的Gemini表面活性剂的沉淀量较低。PQ-10 / C12-M2-C12的交叉频率（ωc）（驰豫时间τc）的增加/减少表明网络结构的形成/崩溃，而PQ-10 / SDS没有明显的变化。