Rheological characterization of a gel produced using human blood plasma and alginate mixtures
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2014-06
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Abstract
Human blood plasma is a material used to generate tissue equivalents due to presence of
fibrinogen. However, gels formed using human blood plasma has weak mechanical properties. In this study, different mixtures of sodium alginate and blood plasma were performed
and evaluated. By determining ζ potential can be established the stability of the plasma–
alginate mixture and by dynamic rheology can determine the most suitable parameters for
the gelation of the above mixtures, when calcium chloride is used as a crosslinker.
Experimental results evidence an increment in ζ potential at alginate concentrations of
0.8% and 1.6% with a resulting pseudoplastic behavior of evaluated mixtures, which
described the homogenization of the mixture. On the other hand, mixtures were gelled by
using aspersion of calcium chloride and characterized by dynamic rheology. Solid behavior
is dominant in all range of frequency sweep test between 0.1 Hz and 100 Hz. Finally, the
ultimate tensile strength of a gel reach 6.3693870.24320 kPa, which is enough for manual
handling of the gel. Between the tasks of the gel would be used for cell entrapment, for
controlled release of drugs or in the manufacture of wound dressings.
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Atribución-NoComercial-CompartirIgual 2.5 Colombia