Solution and rheological properties of cationic cellulose/gemini surfactant: Effect of the alkyl chain and spacer length. (15th June 2020)

• Record Type: Journal Article
• Authors: Pan, Hong; Bu, Ya-nan; Lian, Wen-Jing; Zhang, Shu-lin; Sun, Shu-hong; Han, Jing
• Is Part Of: Carbohydrate polymers. Volume 238(2020)
• Publication Date: 2020-06-15
• Subjects: Interaction -- Gemini surfactant -- Polyelectrolyte -- Rheological properties; Polysaccharides -- Periodicals; Polysaccharides -- Periodicals; Polysaccharides -- Périodiques; Electronic journals; 547.78
• DOI: 10.1016/j.carbpol.2020.116200
• Languages: English
• ISSNs: 0144-8617

Abstract

Highlights: Interaction between PQ-10 and different gemini surfactant was first reported. The effect of the structure of gemini surfactants on interaction were first investigated. The experimental data and theoretical model is correlated. Abstract: 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, 1 H 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.