Collapse of a polymer chain in a melt of incompatible polymer chains

Abstract
We study the conformation of a linear polymer chain A in a melt of linear polymeric chains B of a different chemical species in the temperature domain where A and B chains are incompatible. We are lead to a strong contraction of the A chain similar to the usual collapse of a single chain in a poor solvent. However, the transition between the ideal and the collapsed state of the coils is more abrupt than for a single chain in a poor solvent

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