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Open AccessArticle

Surface Segregation of Cyclic Chains in Binary Melts of Thin Polymer Films: The Influence of Constituent Concentration

1
School of Chemistry & Physics, University of KwaZulu-Natal, Pietermaritzburg, Private Bag X01, Scottsville 3209, South Africa
2
Department of Polymer Science, University of Akron, Akron, OH 44325, USA
3
National Institute of Theoretical Physics (NITheP) KZN Node, Pietermaritzburg, Private Bag X01, Scottsville 3209, South Africa
*
Author to whom correspondence should be addressed.
Polymers 2018, 10(3), 324; https://doi.org/10.3390/polym10030324
Received: 31 December 2017 / Revised: 21 February 2018 / Accepted: 2 March 2018 / Published: 15 March 2018
(This article belongs to the Special Issue Polymerizations from Surfaces)
We carry out extensive molecular dynamics simulations of thin films of bead-spring models of binary mixtures composed of cyclic and linear polymer chains. We study the equilibrium behavior of the polymer chains for two very different chain lengths, which resemble short (10-mers) and long (100-mers) chains, at different concentrations of the binary mixture. We clearly show how the concentration variable affects the enrichment of either of the two polymer species at the interface, and also how the chain length influences this process. View Full-Text
Keywords: polymer melt; concentration; surface behavior; interface polymer melt; concentration; surface behavior; interface
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Gaitho, F.M.; Tsige, M.; Mola, G.T.; Pellicane, G. Surface Segregation of Cyclic Chains in Binary Melts of Thin Polymer Films: The Influence of Constituent Concentration. Polymers 2018, 10, 324.

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