Our parameter set was further tested by modeling amorphous PET. Structural properties of our amorphous model reveald a slight underestimation of PET density, but a very good agreement of gauche and trans populations in relation to experimental data. By further studying the electronic properties of a PET amorphous slab, we demonstrated the electronic polarization response of PET residues as a function of their exposure to aqueous solvent. We observed an average induced dipole moment of ∼1 D per residue for the areas most exposed to the solvent, with a maximum value of ∼3 D being sampled.