TY - JOUR
TI - Non-stationary heat transfer in gels applied to biotehnology
AU - Pokusaev Boris G
AU - Vyazmin Andrey
AU - Zakharov Nikolay
AU - Karlov Sergey
AU - Nekrasov Dmitry A
AU - Reznik Vyacheslav
AU - Khramtsov Dmitry
JN - Thermal Science
PY - 2017
VL - 21
IS - 5
SP - 2237
EP - 2246
PT - Article
AB - Unsteady heat transfer in agarose gels of various concentrations was studied in order to make a breakthrough in the technology of 3-D additive bioprinting. Data on the kinetics of the phase transformation was obtained using spectroscopy as a function of temperature during the formation of agarose hydrogel. The dynamics of aging was investigated for gels of different densities. The time dependence of the structural changes was obtained. Particular attention was paid to the changes in the structure of the gel due to the processes of evaporation of the liquid during the gel formation and during long-term storage. Experiments were performed to determine the dynamics of the temperature fields simultaneously with heat flux measurements during the formation of agarose gels from different initial concentrations. A technique based on experimental data for the computations of the thermophysical coefficients of agarose gels was developed.