The spinnability of viscoelastic solutions of tetradecyl- and hexadecyl-trimethylammonium salicylates

Abstract

Abstract:The spinnability was measured for aqueous viscoelastic solutions of tetradecyland hexadecyltrimethylammonium salicylates (C14TASal, C16TASal) in the absence and presence of sodium salicylate (NaSal) and sodium bromide (NaBr). The spinnability is classified into two types, D and C. While the intrinsic drawing length in type D is proportional to the drawing velocity, the drawing intrinsic length in type C decreases with the drawing velocity or is independent of it. The spinnability changes from type D to C, as the drawing velocity and the surfactant concentration increase, and the temperature lowers. The effect of salt is different between NaSal and NaBr. It can be assumed that a pseudo-network structure composed of rod-like micelles is formed in viscoelastic and spinnable surfactant solutions. Then, the spinnability depends on the balance between the elasticity and the viscosity in which the structure results.

Influence of Surfactant Concentration and Counterion to Surfactant Ratio on Rheology of Wormlike Micelles

“…Rehage and Hoffmann (10), Cressely and Hartmann (11), and Ali and Makhloufi (12) observed that the zero shear viscosity first increased with concentration, reaching a maximum, and then decreased. Other studies, like those of Imae et al (13) and Hu et al (14), have shown the different effects for strongly binding counterions like NaSal and weakly binding counterions like NaBr. Weakly binding salt effects are not included in this study.…”

Fabrication of Uniaxially Aligned Poly(propylene) Nanofibers via Handspinning

“…Furthermore, the formation of “Pele's hair” can be also explained as a spinning process 2. Generally, a spinnable liquid is a non‐Newtonian fluid with viscoelasticity 3…”

Structure of a polymeric cadmium complex containing triply bridging monophenylphosphinate ligands

“…0.8512 (6) 0.3167 (5) -0.1901 (2) 0.071 (2) C(27) 1.0439 (7) 0.3427 (5) -0.1074 (2) 0.067 (2) O(1) 1.3659 (4) 0.3255 (4) -0.1693 (1) 0.094 (1) 0(2) 1.2098 (5) 0.3576 (4) -0.0867 (1) 0.095 (1) 0(3) 0.8959 (5) 0.3419 (4) -0.0838 (1) 0.093 (1) 0(4) 0.7890 (4) 0.3292 (4) 0.0148 (1) 0.087 (1) (2) (1) and (2) were prepared as described by Imae, Hashimoto & Ikeda (1990). Both structures were solved by direct methods and refined anisotropically by full-matrix least squares for all non-H atoms.…”