investigating on release behavior of ph-responding melamine formaldehyde microcapsules

In this study, microcapsules with melamine formaldehyde as a shell and ethylene glycol as a core were synthesized by in-situ polymerization and the characteristics of these capsules were studied by fourier transform infrared spectroscopy (ftir) and scanning electron microscopy (sem) the ph-triggered release of phenolphthalein from the capsules was evidenced using uv-visible spectroscopy the morphological study showed the microcapsules are of spherical nature with average diameter 5 μm according to the results, with increasing ph value, the releasing rate of phenolphthalein from capsules increases therefore, the capsules are suitable for using in alkaline environments and can be a good candidate for reducing the rate of the corrosion because of a controlled release of a corrosion inhibitor, as demanded by the presence of the cathodic reactions