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Issue 9, 2018
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Adsorption of amphiphilic graft copolymers in solvents selective for the grafts on a lyophobic surface: a coarse-grained simulation study

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Abstract

The sorption of graft copolymers on surfaces attractive only for the backbone and its effect on the conformational behavior of adsorbed/desorbed chains in solvents good for the grafts and poor for the backbone was studied by coarse-grained computer simulations. It was found that the sorption and conformational behavior are very complex and are results of an intricate interplay of solvent quality (polymer–solvent interactions) and solvent strength (polymer–surface vs. solvent–surface interactions). Increasing grafting density and length of grafts protect the backbone against adsorption, but the behavior is non-trivial. A decrease in solvent quality promotes the adsorption, because it lowers the overall solubility, but the backbone collapses and the probability of backbone–surface contacts decreases, which simultaneously hinders the adsorption. The results of simulations are presented in the form of phase diagrams depicting the decisive features of the conformational and sorption behavior.

Graphical abstract: Adsorption of amphiphilic graft copolymers in solvents selective for the grafts on a lyophobic surface: a coarse-grained simulation study

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Publication details

The article was received on 12 Dec 2017, accepted on 27 Jan 2018 and first published on 29 Jan 2018


Article type: Paper
DOI: 10.1039/C7CP08327K
Citation: Phys. Chem. Chem. Phys., 2018,20, 6533-6547
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    Adsorption of amphiphilic graft copolymers in solvents selective for the grafts on a lyophobic surface: a coarse-grained simulation study

    Z. Posel, M. Svoboda, Z. Limpouchová, M. Lísal and K. Procházka, Phys. Chem. Chem. Phys., 2018, 20, 6533
    DOI: 10.1039/C7CP08327K

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