Table 3. Main Results of the DSC Tests on the Neat and PDA-Coated Microcapsulesa.
sample | Tm (°C) | ΔHm (J/g) | Tc (°C) | ΔHc (J/g) | MC (wt %) | PDA (wt %) | Tm,2 (°C) | ΔHm,2 (J/g) |
---|---|---|---|---|---|---|---|---|
MC | 44.7 | 227.2 | 29.0 | 224.1 | 100 | 0 | 44.4 | 224.0 |
MC-PDA | 44.3 | 189.2 | 29.7 | 192.1 | 85.7 | 14.3 | 43.8 | 190.9 |
Tm, ΔHm = melting temperature and enthalpy (first heating scan); MC (wt %), PDA (wt %) = weight fractions of MC and PDA, calculated from the measured melting enthalpy; Tc, ΔHc = crystallization temperature and enthalpy (cooling scan); and Tm,2, ΔHm,2 = melting temperature and enthalpy (second heating scan).