Dsc q10

The thermal behavior of the samples was measured using differential scanning calorimetry (DSC). DSC thermograms were recorded using a thermal analysis device (DSC Q10, TA Instruments, New Castle, DE, USA) from room temperature to 300 °C with a heating rate of 10 °C/min under a nitrogen gas atmosphere.

T_g was confirmed using a DSC (DSC-Q10, TA Instruments, New Castle, DE, USA). DSC measurements were performed at temperatures ranging between −100 and 100 °C at a heating rate of 10 °C/min. After the first heating-cooling cycle, T_g was obtained during the second heating.

The glass-transition temperatures (T_g) of the E-LqIRs were measured by differential scanning calorimetry (DSC; DSC-Q10, TA Instruments, New Castle, DE, USA). The E-LqIR samples (3–6 mg) were analyzed from −80 to 100 °C at a heating rate of 10 °C/min.

Differential scanning calorimetry (DSC) model DSCQ-10 by TA instruments (New Castle, Delaware, United States) was used to measure thermal behaviors of the virgin PECoVA, PECoVA/DOL and PECoVA/OMCD composites. The weight of the sample was about 5 mg. Next, the heating rate was set at 10 °C/min and the atmosphere was purged with nitrogen gas, with the gas flow rate of 50 mL/min, in order to get the melting temperature (T_m) and the melting enthalpy (ΔH) of the samples. The samples were then heated from room temperature (30 °C) to 150 °C. The degree of crystallinity of the samples, X_C, was calculated using Equation (2) below: XC %=ΔHfΔH0×100%
where ΔH_f represents the melting enthalpy of the sample, which is obtained by calculating the second heating endothermic peak, and ΔH₀ is the theoretical melting enthalpy of the 100% crystalline polymer. In this case, the ΔH₀ of PECoVA is approximately 23.47 J/g.

The thermal and phase transition characteristics of the unmodified and shell-modified PCM microcapsules, as well as of the textile fabric containing these microcapsules were determined by standard method EN 16806-1 [43 ], using DSC module (DSC Q10, TA Instruments, New Castle, DE, USA) equipment under a nitrogenous atmosphere. The mass of test specimens was about 10 mg. A lid was pressed on the crucible to ensure good contact between the specimen and the bottom of the crucible. The micro-encapsulated PCM samples were dried at 60 °C for 24 h to remove all water. The samples underwent a heating-cooling-heating cycle from −20 °C to +60 °C at a heating and cooling rate of 5 °C/min. Based on the recorded second heating cycle, enthalpy of fusion in J/g was determined by measuring the area under the peak to the baseline constructed, using software of DSC Q10. In the same way, the enthalpy of crystallization in J/g was determined based on the recorded cooling cycle.
The transition temperatures—peak melting and peak crystallization temperatures—extrapolated onset and end melting as well as crystallization temperatures, were also determined based on respectively the recorded second heating or based on the recorded cooling cycle, as defined in EN ISO 11357-3 [44 ].

DSC was used to characterize the thermal properties of the components in the optimized formulations, i.e., unloaded CAP-NCs and CHX-CAP-NCs. The samples were weighed (3–5 mg) directly in hermetic aluminium pans and scanned in a temperature range of 0–400 °C at a heating rate of 10 °C/min under a nitrogen flux of 50 mL/min utilizing a previously calibrated and adjusted calorimeter (DSC Q10, TA Instruments, New Castle, DE, USA).

The determination of glass-transition temperature (T_g) was carried out on a differential scanning calorimeter (DSC-Q10, TA Instruments, Delaware, USA). The curves for samples (3–6 mg) were obtained by heating sample from −120 to −20 °C at a heating rate of 10 °C/min under nitrogen atmosphere.