Journal
COMPUTATIONAL AND THEORETICAL POLYMER SCIENCE
Volume 11, Issue 1, Pages 49-55Publisher
ELSEVIER SCI LTD
DOI: 10.1016/S1089-3156(99)00061-6
Keywords
sorption; Widom's particle-insertion method; polyamides
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The combination of the thermodynamic-integration approach and Widom's particle-insertion method is shown to be appropriate to determine the excess chemical potential of water in dense, amorphous polymer microstructures from MD simulation at an atomistically detailed level. The two-step method is applied to bisphenol-A-polycarbonate (BPA-PC) and polyvinylalcohol (PVA). The results are compared to previously published calculations on water sorption of various polyamides and show the applicability of the two-step method for the calculation of the excess chemical potential of water in a variety of polymer materials to obtain an estimate of their water sorption behavior. (C) 2000 Elsevier Science Ltd. All rights reserved.
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