Encapsulation of ۱-methylimidazole as curing agent of epoxy resin andevaluation of it’s release behaviour

In order to prepare the epoxy resin of the thermal delay curing system, an efficient and economicstrategy for rapid microcapsation of imidazole-based agents was developed through the click reactionof a bismaleimide (BMI) resin and a tetrathiol (SH) within oil/water emulsion systems. The successfulformation of the fully cross-linked BMI shell was confirmed by Fourier transform infrared (FT-IR)spectra, showing relatively full conversions of monomers. Optical microscopy images showed a coreshellstructure with spherical morpholegy for microcapsoules in the range of ۲۰-۱۰۰ μm. Releasebehaviour of the curing agent from microcapsoules was evaluated using UV-Vis spectroscopy andthe results showed that absorption intensity was increased with increasing temperature above theglass transition temperature of shell

کلیدواژه ها:

Synthesis ، Thermal delay system ، Imidazole ، Microcapsoul ، Release