Conclusion
The interactions between quartz surface and two types of polymer materials (PMMA and PVA) were studied by means of all-atoms molecular dynamics simulation. An apparently adsorption process could be observed by the examination of trajectories of both molecules. To assess the detailed structural and thermodynamical aspects of adsorption process, the density profile of differentatom species in polymers, hydrogen bonds, radius of gyration and adsorption energy were calculated. The results of density profileand hydrogen bonds both indicated that carbonyl group playeda crucial role in the adsorption process. In addition, there weremore hydrogen bonds formed in PVA/quartz system than PMMA. The radius of gyration verified the molecular configuration changesin the adsorption process. In conclusion, two polymer molecules both had strong adsorption onto quartz surface, but there wasno significant difference in the adsorption energies for these two polymers.This study was done in the vacuum and dry condition. How-ever, the effect of water in the adsorption process could not beignored. More work focusing on the interaction between polymer molecules and quartz surface in aqueous condition will be carried out in further studies.