Complete set of source data for PLA and PLA/PHA blends including DSC, TGA, XRD, DMTA, and SEM Measurements

This dataset contains source data obtained during research under the project OPUS-26 2023/51/B/ST8/00775 "Development of a new approach to the production and compatibility of polyester blends using hybrid organic–inorganic additives", relating to research results described in the publication "Evaluation of Thermomechanical Properties of Polymer Blends Intended for Additive Manufacturing Processing: Comparative Study of Poly(Lactic Acid) and Poly(Lactic Acid)/Polyhydroxyalkanoate Blends", DOI: 10.3390/polym17182454 As part of the research work carried out, measurements were carried out using the following methods: differential scanning calorimetry DSC/ abbreviation: DSC thermogravimetry TGA/ abbreviation: TGA wide-angle X-ray diffraction measurements/ abbreviation: XRD dynamic mechanical thermal analysis/ abbreviation: DMTA scanning electron microscopy observations/ abbreviation SEM The thermal properties and phase region changes were investigated using the differential scanning calorimetry method (DSC). The small 5 mg specimens were placed inside the pierced aluminum crucibles. The heating/cooling rate was set to 10 °C/min, while the scanning range was set to 20–225 °C. The standard heating/cooling/heating procedure was applied. The oven chamber was purged with a protective nitrogen atmosphere, flow rate 20 mL/min. The thermal stability of the used filaments was evaluated using the thermogravimetric (TGA) method. Tests were performed using standardized methodology, where a small sample of 10 mg was placed inside the ceramic crucible and apparatus chamber. Tests were conducted from the room temperature to 700 °C, where the heating rate was set to 10 °C/min. The procedure was performed under a protective nitrogen atmosphere, with a gas flow of 20 mL/min. The thermomechanical evaluation of material properties was performed using dynamic mechanical thermal analysis (DMTA), where basic viscoelastic properties were recorded during the temperature scan. For all of the tested materials, the test temperature ranged from 30 °C to 150 °C, while the heating rate was 2 °C/min. The deformation of 0.01% was applied with a frequency of 1 Hz. The tests were conducted using a torsion mode clamp system. The structural studies will be supplemented by wide-angle X-ray diffraction measurements. During the measurements, monochromatic X-ray diffraction with a wavelength of λ = 1.5406 Å (CuKα) was used in the 2θ angle range from 10° to 75° with a step size of 0.05. The internal structure of the manufactured materials was investigated using the scanning electron microscopy method (SEM). For this purpose, the fractured surface of the impact test specimen was covered with a thin layer of gold using a plasma sputtering machine. Sample assignments correspond to the polymer matrix type (PLA or PLA/PHA) and the 3D printing process temperature. In selected cases, such as DSC and XRD tests, the top and bottom markings identify the location where the measurement sample was taken. File designation consists of:measurement type_material name and/or processing temperature