URL: https://www.researchgate.net/profile/Lei-Wang-63/publication/263850240/figure/fig1/AS:614165987213325@1523439990398/Glass-transition-temperature-composition-curves-based-on-the-Kwei-equation-of_Q320.jpg
URL2: https://www.researchgate.net/figure/Glass-transition-temperature-composition-curves-based-on-the-Kwei-equation-of_fig1_263850240
