.1. Computational models
Determination of the right chain length is critically important for the
MD simulation of a polymer, since short chains might lead to end effects
and cannot represent the real systems accurately, while long chains may
lead to difficulties for computer simulations [20]. Thus, as the first step,
PVA and PAA chains with n = 10, 20, 30, 40, 50, and 60 were constructed
using the Materials Studio (MS) [21]. And the carbon atoms of end
groups were hydrogenated to reach saturation. Then, they were