The .txt files contains the raw differential scanning calorimetry (DSC) data for the P(DMAA-co-MABP) copolymer foil, measured using a DSC 3 system. The experiment was conducted under a nitrogen atmosphere, with a heating rate of 10 °C/min, covering a temperature range from -50 °C to 300 °C. The dataset includes temperature and heat flow values used to identify the glass transition temperature (Tg) of the material. The Igor file and the image show the processed data.