Water Interaction with Poly (methyl methacrylate) and Polyethylene Films

We present herein the water desorption from the dipole oriented poly (methyl methacrylate) PMMA and from polyethylene. We analyze the desorption peaks for the ice and the bulk species. And if the water desorption is coverage dependent or not. Hyperchem calculations of molecular orbitals for both polymers are also discussed. The energy of desorption is obtained by employing the Arrhenius and Polany-Wigner equations.