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Abstract

When two similar polymers contact in the melt to form a polymer-polymer interface, interdiffusion of random-coil chains occurs. For this case, we determine a set of properties, H, as a function of time, t, and molecular weight, M. They in clude the number of chains, n, number of bridges, p, average monomer inter penetration depth, X, the total monomer depth, X_o, the center of mass diffusion, χ_cm, the average contour interpenetration length, l, the total contour length, L_o, and the average bridge length, l_p. The time dependent, H(t), and equilibrium solutions, H_∞ , can be summarized as

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Properties and Entanglements of Amorphous Polymer Interfaces

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