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Abstract: Molecular dynamics simulations are used to study the phase behavior of linearmultiblock copolymers with two types of monomers, A and B, where the length ofthe polymer blocks $N {A}$ and $N {B}$ $N {A}=N {B}=N$, the number of theblocks $n {A}$ and $n {B}$ $n {A}=n {B}=n$, and the solvent quality varies.The fraction $f$ of A-type monomers is kept constant and equal to 0.5. Whereasat high enough temperatures these macromolecules form coil structures, whereeach block A or B forms rather individual clusters, at low enough temperaturesA and B monomers from different blocks can join together forming clusters of Aor B monomers. The dependence of the formation of these clusters on the variedparameters is discussed in detail, providing a full understanding of the phasebehavior of linear multiblock copolymers, at least for this symmetrical case.



Autor: Panagiotis E. Theodorakis, Nikolaos G. Fytas

Fuente: https://arxiv.org/







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