Water activity in polyol / water systems : new UNIFAC parameterization

  title={Water activity in polyol / water systems : new UNIFAC parameterization},
  author={Claudia Marcolli and Th. Peter},
Water activities of a series of polyol/water systems were measured with an AquaLab dew point water activity meter at 298 K. The investigated polyols with carbon numbers fromn=2–7 are all in liquid state at room temperature and miscible at any molar ratio with water. In aqueous solutions with the same molar concentration, the diols with lower molecular weight lead to lower water activities than those with higher molecular weights. For diols with four or more carbon atoms, the hydrophilicity… CONTINUE READING