@article{jpbpc20251311,
author={{D¡¯Amelia, Ronald P. and Nastasi, Julia},
title={Evaluation of the Flory-Fox Equation for the Relationship of Glass Transition Temperature (Tg) vs Molar Mass of Poly (tert-Butyl Methacrylate (PtBMA) Using Differential Scanning Calorimetry (DSC)},
journal={Journal of Polymer and Biopolymer Physics Chemistry},
volume={13},
number={1},
pages={1--7},
year={2025},
url={https://pubs.sciepub.com/jpbpc/13/1/1},
issn={2373-3411},
abstract={<b>  </b>Glass transition temperature (Tg), termed the ¡°softening point of amorphous materials¡± is the temperature at which an amorphous material changes from a hard, glassy state to a soft, rubbery one. As the number-average molecular weight (Mn) of the amorphous material increases, its glass transition temperature also increases, but ultimately levels off asymptotically at a maximum value labeled Tg<SUB>¡Ş</SUB>. Differential scanning calorimetry (DSC) was utilized to evaluate Tg for eight samples of poly t-butyl methacrylate (PtBMA) whose Mn values ranged from approximately 1K to 500K. These values were then plotted against reciprocal Mn, producing a Flory-Fox equation of Tg = 114.7¡ãC ¨C .55 x 10<SUP> 5 </SUP>C.g.mol<SUP>-1</SUP>/Mn, with a correlation coefficient of 0.98. These experiments demonstrate the quantitative applications of DSC in evaluating the Flory-Fox equation for Poly (t-Butyl Methacrylate (PtBMA) as well as its suitability within the undergraduate chemistry laboratory.},
doi={10.12691/jpbpc-13-1-1}
publisher={Science and Education Publishing}
}