Predict the glass transition temperature of a polymer blend or copolymer from the Tg and weight fraction of each component. Add as many monomers or polymer stages as your system needs.
The Fox Equation
1 / Tg=
Predicted Blend Tg
—K
—
Enter Tg in Kelvin or Celsius (type "c" after a value, e.g. 100c, to enter Celsius directly). Enter any quantities in the weight field — parts, grams, percentages, or fractions — the calculator normalises them to unity automatically. Based on T.G. Fox, Bull. Am. Phys. Soc., 1956. For copolymers with strong specific interactions, the Fox equation gives an estimate only — verify with DSC.
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