MECHANICAL PROPERTIES OF A COLLOIDAL BODY
IN THE PROCESS OF ITS TRANSFORMATION INTO
A CAPILLARY-POROUS ONE AS A RESULT OF DRYING

V. A. Mansurov, V. A. Bilyk,
and G. P. Gorodkin

UDC 666.9.017:665.939.22

The changes in the mechanical properties of a colloidal 
body in the process of its transformation into a capillary-porous 
one as a result of drying have been investigated by the example of 
casein. The rheological properties of casein were experimentally investigated 
by the method of mechanical Fourier spectroscopy. The mass loss and 
the shrinkage of this biopolymer were measured at different rates 
of conductive drying determined by the drying temperature. A macrokinetic 
model has been constructed. As the kinetic parameter, the relative 
mass loss was selected.

A. V. Luikov Heat and Mass Transfer Institute, National Academy 
of Sciences of Belarus, 15 P. Brovka Str., Minsk, 220072, Belarus; 
email: mansurov@tut.by, snowsoft@tut.by. 
Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 81, No. 3, 
pp. 442-449, May-June, 2008. Original article submitted November 20, 2006.