Effect of the particulate morphology of resin on the gelation process of PVC plastisols

What is it about?

In this study, the gelation process of the as-prepared PVC plastisol was characterized by measuring the evolution of vibrational viscosity with temperature or time using a vibrational viscometer. Furthermore, the effect of some commercial resins with different particulate morphologieson the gelation process was investigated by synchronously combining scanning election microscopy and laser particle size analyses. This paper explains how the particle size distribution and the aggregation degree of the secondary particles of a resin affect the gelation process.

Featured Image

Why is it important?

The results of this study proved that the particle size distribution and the aggregation degree of the secondary particles of a resin are the key factors affecting the gelation process. For the resin with bimodal particle size distribution, the closer the aggregation of the secondary particles, the slower the gel speed;however,an opposite behavior was observed for the resins with unimodal particle size distribution.