MODE-COUPLING THEORY OF DIFFUSION IN BLOCK COPOLYMER MELTS - INFLUENCE OF CONCENTRATION FLUCTUATIONS

摘要

The polymer mode-coupling theory is extended to describe diffusion in block copolymer melts. Concentration fluctuations are shown to significantly slow down the diffusion near or below the order-disorder transition temperature. These effects are stronger for longer tracers, and for homopolymer tracers compared with block copolymer tracers. Quantitative agreement is obtained between our theory and recent experiments. (C) 1995 American Institute of Physics. [References: 39]