It was found that TGA provides more accurate measure of the core material mass content than that obtained by DSC. No significant
changes in the surface morphology of RT21MCs have been observed
when nucleating agent was used. The mass loss of RT21 microcapsules
decreased to half when 5 wt. % of Rubitherm®RT58 was
mixed with PCM; indicating that the higher melting RT58 assisted
in sealing the encapsulated PCM to a better extent.