Do nonionic surfactants increase viscosity?

Nonionic surfactants with very short ethoxylate chains (and limited solubility) effect only small viscosity increases in HMHEC,22 and with larger hydrophobes and longer (EO) units in 100 HASE23,24 thickener solutions.

What factors affect a polymer solution viscosity?

These correlations account for the individual as well as combined effects of four major parameters; namely, shear rate, concentration, molecular weight and degree of hydrolysis, on polymer solution viscosities. Viscosities of various polymers solutions have been measured.

Does ICI viscosity affect acrylic paint?

High ICI viscosities, approaching 3.0 poise, can affect the behavior of acrylic paint. We would expect paints with similar ICI viscosities to behave similarly upon application, but the acrylic system developed unusual application properties in this case.

Why do latex particles increase viscosity?

With large particle latexes, vis-cosity increases arise primarily from the network built through the interaction of HEURs with surfactants in the aqueous phase. Fluorescence is used to verify the mechanism by which surfac-tants enhance associative thickener viscosities.

Why does high permeability affect the viscosity of polymer solution?

This is because when the polymer solution passes through the high permeability zone or flow at high rates, the mechanical degradation may occur, thereby decreasing the viscosity of polymer solution.

Does a Heur thickener increase viscosity compared to a nonionic surfactant?

We have recently observed that the effective termi-nal size of an HEUR thickener is synergistic with the nonionic surfactant and can result in a dramatic in-crease in viscosity compared with the increase ob-served with the anionic SDS surfactant (Figure 3).