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sci.glass-transition-Tg-Fox Calculator
Calculates glass transition temperature of a copolymer using the Fox equation: 1/Tg = w_A/Tg_A + w_B/Tg_B. Styrene-butadiene copolymer: Tg(PS) = 100 °C, Tg(PB) = −85 °C — 30 wt% butadiene gives Tg ≈ −17 °C, bringing it below room temperature for rubber applications.
Inputs
W1 Pct
Body or object weight. For health calculators, usually in kg or lbs.
Tg1 K
Reference formula or conversion factor shown for context.
Tg2 K
Reference formula or conversion factor shown for context.
Results
Fox equation Tg (K)
The value at the specified point or condition.
Fox equation Tg (°C)
The value at the specified point or condition.
linear mixing rule Tg (K)
Sample size or count used in the calculation.
1/Tg = w₁/Tg₁ + w₂/Tg₂
Reference formula or conversion factor shown for context.
component weight fractions
Mass of this component divided by total vehicle or system mass. Reducing structural weight fraction directly increases payload capacity.