Abstract
The effect of polydispersity on the width of the interphase between an end-tethered polymer and a polymeric matrix has been investigated using a computer program which solves a self-consistent field model of a polymer chain distributed on a cubic lattice. This model was used to calculate an average volume fraction of each species along the this perpendicular to the grafting plane. A Flory-Huggins-type expression, generalize to a multicomponent system, was used to model the free-energy change of mixing. The logarithmic-normal molecular weight distribution function was employed to generate the desired molecular weight distribution for the end-tethered polymer while the matrix was assumed to be monodisperse
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