Abstract
Flow-induced phase separation in binary blends of end-associating polymers is studied analytically. To describe the conformational and orientational properties of a polymer chain a simple dumbbell model is applied. It is demonstrated that the association rate for formation of associated diblock copolymer-like chains decreases with an increase of flow rate. This is due to the extra-stretching of the associated chain compared with the two initial homopolymer chains. The decrease in the fraction of associated diblock copolymer-like chains makes the homogeneous state less stable, so the effect of flow manifests itself in the enhancement of the segregation tendency in these kind of associated polymer blends.
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