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sci.polymer-molecular-weight Calculator
Calculates polymer molecular weight averages (Mn, Mw, Mz) and polydispersity index PDI = Mw/Mn from GPC or distribution data. PDI = 1 is monodisperse (living polymerisation); free-radical gives PDI ≈ 1.5–2.0; step-growth gives PDI ≈ 2.0 at high conversion.
Inputs
Degree Polymerization N
Reference formula or conversion factor shown for context.
Repeat Unit Mw G Mol
Body or object weight. For health calculators, usually in kg or lbs.
Dispersity D
Reference formula or conversion factor shown for context.
Results
Mn (number-avg MW, g/mol)
Sample size or count used in the calculation.
Mw (weight-avg MW, g/mol)
The computed weight (gravitational force) or mass.
dispersity Mw/Mn
ISP (specific impulse) — rocket engine efficiency in seconds. Higher ISP means more thrust per kilogram of propellant consumed.
estimated Rg (nm)
The value at the specified point or condition.
polystyrene repeat unit
The value at the specified point or condition.
narrow dispersity
ISP (specific impulse) — rocket engine efficiency in seconds. Higher ISP means more thrust per kilogram of propellant consumed.