Modification of Tao-Mason equation of state: application to polymer melts

作者：Kiani M^*; Papari M M; Behjatmanesh Ardakani R; Moghadasi J; Boushehri A

来源：Physics and Chemistry of Liquids, 2014, 52(1): 17-25.

DOI：10.1080/00319104.2013.795858

• equation of state
• polymer melts
• statistical mechanics
• surface tension
• volumetric properties

The present work addresses a simplified procedure for the calculation of certain parameters in the Tao-Mason (TM) equation of state (EOS) needed to calculate the volumetric properties of polymer melts using surface tension (f) and liquid density at freezing temperature (f), with scaling parameters at compressed state and in the temperature range of 298.15 to 423.15 K and pressures up to 200 MPa. The polymers in question are polyethylene glycol (PEG), polypropylene glycol (PPG), polypropylene (PP) and polyvinyl choloride (PVC). The calculated densities were in good agreement with the ones obtained from the experimental specific volumes as well as polymer chain-of-rotator (PCOR) EOS. The accuracies were found to be of the order of 1.5%. Finally, the modified TM EOS was further assessed through comparing with the Ihm-Song-Mason (ISM) EOS.

• 出版日期2014-1-2