Porosity Control of Suspension PVC Resin by Nano-Buffer Materials
Abbas A Ezzat*
Pharos University, Alexandria, Egypt
*Corresponding Author: Abbas A Ezzat, Pharos University, Alexandria, Egypt.
Published: April 12, 2024
Abstract
One of the important factors for dry blend processes of Suspension Polyvinyl Chloride resin is porosity.
Many parameters have direct and indirect impacts on it.
Direct parameters are operationally controlled and related to the selection of a secondary emulsifier, know as a porisifier.
This parameter is controlled by Reaction Recipe parameters, including agitation intensity, emulsifier ratios, catalyst type, polymerizer temperature, conversion rate, interfacial tension, and PVA degree of polymerization.
On the other hand, the indirect parameters are related to system impurity levels in the reactor. Such impurities are originated from two main sources: namely, Vinyl Chloride monomer, (VCM), and charging water quality.
The application of Nano-Buffer materials in the polymerization phase has revealed the economical improvement of resin porosity.
The results have shown porosity improvements in some applications of around 7%, resulting in operating costs reduction of about 15% in some applications.
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