Convective diffusion near a consolute point

Interface in molten polymer mixtures near the consolute point

2014 The interfacial properties of a system of molten polymers at a temperature just below the critical temperature of demixing are studied in the framework of a mean field theory. The properties of the interface are very specific, the interface is much larger than those of usual binary liquids and the interfacial tension is much smaller so that only optical methods will permit experimental stu...

Pressure behaviour of dielectric permittivity on approaching the near-critical consolute point

– Results are presented of studies on dielectric permittivity (ε) for the isothermal pressure (P ) path of approaching the near-critical consolute point in 1-nitropropane–hexadecane solution. The pretransitional anomaly is well portrayed by the relation isomorphic to that applied in temperature (T ) studies under atmospheric pressure. However, the ε(P ) anomaly is much larger, with almost negli...

Asymptotic Analysis of Buffered Calcium Diffusion near a Point Source

UNSTEADY CONVECTIVE DIFFUSION IN A HERSCHEL–BULKLEY FLUID IN A CONDUIT WITH INTERPHASE MASS TRANSFER

The combined effect of non-Newtonian rheology and irreversible boundary reaction on dispersion in a Herschel-Bulkley fluid through a conduit (pipe/channel) is studied by using generalized dispersion model. The study explains the development of dispersive transport following the injection of a tracer in terms of three effective transport coefficients namely exchange, convective and dispersion co...

Coexistence curve of the n-heptane+nitrobenzene mixture near its consolute point measured by an optical method

We have measured the coexistence curve of the binary liquid mixture n-heptane+nitrobenzene (C7H16+C6H5NO2) near its consolute point using an optical method. In particular, the critical exponent β describing the coexistence curve was measured for this system. Previous experimental values of β for n-heptane+nitrobenzene were higher than the typical theoretically calculated value, an unusual, alth...