Showing papers by "Jayanta Mukherjee published in 1940"
TL;DR: In this paper, the conductivity of hydrogen bentonites is calculated from the relation Σ = 1000 (Σc; π Σu)/C, where Σc is the specific conductivity at a concentration of C grams per litre and π u that of its ultra-filtrate; it passes through a minimum if plotted against C or C.
Abstract: A YIELD value is noticeable in hydrogen bentonites at a concentration lower than that at which thixotropy first appears. This seems to happen generally with bentonites. Some natural calcium bentonites show coacervation1. Coacervation of fine sub-fractions of a natural bentonite has been reported2 at concentrations above the thixotropic range. Hydrogen bentonites, however, show coacervation over a wide range and even below the thixotropic range of concentrations. Near about the concentration at which yield value becomes noticeable a sharp ehange in several properties has been observed. The cataphoretic velocity rapidly increases and tends to a maximum. The conductivity, (Σ, per gram of colloid can be calculated from the relation Σ = 1000 (Σc; π Σu)/C, where Σc is the specific conductivity at a concentration of C grams per litre and Σu that of its ultra-filtrate; it passes through a minimum if plotted against C or C.
3 citations