Download or read book Role of Chemical Surface Preference in Translational and Reorientational Nanoconfinement written by Hao Guo and published by . This book was released on 2018 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: The polymer thin film and colloids has drawn a lot of attention during several decades. Due to the existence of interfaces, chain dynamic could be greatly alternated by nanoconfinement effect. It becomes more interesting when this confinement is employed to polymer chains with side group such as methylene, ester methyl group, and phenyl ring, which will exhibit a chemical segregation preference near interface. Here, we implement molecular dynamics simulations of Kremer-Grest polymer with side group bead to manifest its segregation preference and corresponding gradient relaxation behavior. Besides, by fitting a modified Cosh-form function, we get a decoupling exponent which represents a power law relationship between film dynamics and bulk for high and low temperature regimes. This temperature independent and film thickness dependent exponent will help us understand a deeper meaning of nanoconfinement effect. The onset condition and timescale of this decoupling dynamics is convoluted with glass transition temperature agreement.