Thermodynamic and hydrodynamic properties of aliphatic polyesters, 1. Solubility, intrinsic viscosity, and molecular weight of poly(β‐propiolactone)

Absolute molecular weight, intrinsic viscosity, refractive index increment, refractive index, partial specific density, solubility and molecular weight distribution of poly(β‐propiolactone) is studied. The measured molecular weights range from 40000 up to nearly 1000000. The relationship between intrinsic viscosity and molecular weight [η] = 0,0259 · M ml/g (CHCl3, 30,0°C) shows that the polymer molecule is a linear flexible chain.