Funct. Mater. 2026; 33 (2): 309-327.

Paraffin microcapsules, TAPP/paraffin microcapsules and MUF/paraffin microcapsules (Phase change microcapsules co-modified by hyperbranched carbon nanotubes and aminoporphyrins) were prepared by in-situ polymerization and in-situ-interfacial polymerization using MWNTs-HBP (Hyperbranched carbon nanotubes) and TAPP (Aminoporphyrins) as modifiers and paraffin wax as the capsule core. The experimental results indicate that the initial phase change temperature and the peak phase change temperature of MUF/paraffin microcapsules decreased by approximately 0.50–0.60°C and 0.48–0.84°C, respectively, while the latent heat and phase change coating rate decreased by approximately 10–15 J/g and 6.80–11.70%, respectively. Aminoporphyrin, as a modifying agent, enhances both the latent heat of phase change and the encapsulation efficiency of the microcapsules. The incorporation of carbon nanotubes increases the thermal conductivity; however, it slightly reduces the latent heat and encapsulation efficiency. In contrast, MUF/paraffin microcapsules improve the thermal conductivity of the original formula, while simultaneously enhancing their photosensitizing properties.