Abstracts Book - IMRC 2018

• SB2-P049
RHEOLOGICAL EFFECT OF THE CONCENTRATION OF
NANOPARTICLES IN STARCH MANIOC
Cesar de Jesús Alarcón Hernández 1 , Esteban Alberto González García 1,2 , Luis Medina Torres 3 ,
Patricio Morales Pacheco 1
1
Instituto Tecnologico Superior de Poza Rica, Ingeniería en Nanotecnología, Mexico. 2 Instituto
Tecnologico Superior de Poza Rica, Ingeniería en Gestión empresarial, Mexico. 3 Universidad
Nacional Autónoma de México, departamento de Farmacia, Mexico.
In the present study, a biodegradable material was elaborated from manioc
starch in combination with zinc oxide nanoparticles (ZnO). The starch was
obtained by crushing 200g of mianioc in a mortar, after that, 500ml of water
was adding to obtain a pasty solution which were precipitated in a liter beaker,
so that it completely covered the manioc pieces and then centrifuged to obtain
the starch. The preparation of the zinc oxide nanoparticles was done from 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 time and temperature of calcination
of the product obtained from 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 and non-toxic properties, biosecure and
biocompatible in many daily biological applications. Glycerin was adding to
starch, varying the concentrations of 10, 20 and 30% w/w in order to obtain more
elastic materials. The different samples were subjected to a thermomechanical
study through a hybrid rheometer AR-G2, using a geometry of parallel plates 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.
Acknowledgment:
In the present study, a biodegradable material was elaborated manioc starch in
combination with zinc oxide nanoparticles (ZnO). The starch was obtained by
crushing 200g of mianioc in a mortar, after that, 500ml of water was adding to
obtain a pasty solution which were precipitated in a liter beaker, so that it
completely covered the manioc pieces and then centrifuged to obtain the starch.