Achieving optimal micro-explosions in stable emulsions by adding
The emulsified feedstock technique is to improve the performance of
products by using the micro-explosion phenomenon of emulsion. However,
an obstacle to some applications of this technology is the contradiction
between emulsion stability and micro-explosion intensity. For the first
time, adding water-soluble polymers was proposed to solve this problem.
Two polymers of xanthan gum (XG) and nonionic polyacrylamide (NPAM) were
investigated and the results show that micro-explosions have five forms.
As one of these five forms, the intensity of optimal micro-explosion is
three orders of magnitude higher than other forms, and adding 0.5% XG
increases the probability of optimal micro-explosion from 0% to 60%
due to the low surface activity, strong thickening and pseudoplasticity
of XG solutions. By contrast, NPAM does not promote micro-explosion
because of its strong surface activity. Finally, a new mechanism for
micro-explosions related to surface tension, interfacial tension and
viscosity is proposed.