Influence of polyvinyl alcohol concentration on microencapsulation by in situ polymerization

In this study Melamine-Formaldehyde microcapsules containing mixture of three oil components were prepared via in situ po lymerization. This research was conducted to investigate the effect of Poly vinyl alcohol concentration on the mean particle si ze, surface morphology and thermal properties of microcapsules. The characteristics of microcapsules were observed using scanning electron microscopy (SEM) and differential scanning calorimetry (DSC). The results indicated that narrow size d istribution and the most microencapsulation efficiency were achieved by 1% Poly vinyl alcohol’s concentration.