// multi-utility computation suite · offline · instant · precise
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sci.glass-transition-fox Calculator
Calculates the glass transition temperature of a polymer blend using the Fox equation: 1/Tg = w₁/Tg₁ + w₂/Tg₂. Plasticisers lower Tg by diluting the polymer network — adding 20% dioctyl phthalate to PVC drops Tg from 82 °C to below room temperature, making flexible PVC.
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.
W2 Pct
Body or object weight. For health calculators, usually in kg or lbs.
Tg2 K
Reference formula or conversion factor shown for context.
Results
blend Tg (K)
Sample size or count used in the calculation.
blend Tg (°C)
Sample size or count used in the calculation.
Fox equation: 1/Tg = Σ(wi/Tgi)
The value at the specified point or condition.
component 1 Tg
Sample size or count used in the calculation.
component 2 Tg
Sample size or count used in the calculation.
plasticizer effect
Reference formula or conversion factor shown for context.