Abstracts Book - IMRC 2018

The preparation of the zinc oxide nanoparticles was done zinc nitrate (50 mL of
a 0.1 M solution) and sodium hydroxide (50 mL of a 0.2 M solution), the variables
of the process were the times and temperatures of calcination of the product
obtained the nanoparticles chemical synthesis, it is sought to combine the
manioc starch and the zinc oxide nanoparticles to give the antimicrobial
property to the material apart the fact that they are considered non-toxic,
biosecure and biocompatible in many daily biological applications, glycerin is
also added, varying only the concentrations of this (10%, 20%, 30%). The
different samples were subjected to a thermomechanical study through a
hybrid rheometer AR-G2, using a geometry of parallel planes of 20 mm, in
oscillatory flow tests of small amplitude that were made at temperatures of 20,
60 and 90 ºC In order to apply the principle of time temperature superposition
in the zone of linear viscoelasticity, showing a mainly solid behavior, in the
modules of storage and loss in section when a greater amount of glycerin is
added, on the other hand it is observed that the concentration of zinc oxide
nanoparticles does not impact on the mechanical behavior of the material.
Keywords: starch, rheology, nanoparticles
Presenting authors email: cesar-jesus@hotmail.com