Slow mode overlap concentration

In other papers (Chu and Nose, 1979) the diffusion between the two diffusional modes seems not so significant, and the coil overlap concentration c. serves as the concentration threshold of their manifestation (Adam and Delsanti, 1977). When c < c, the macro-molecules behave as independent particles, and the characteristic size of the heterogeneous area is h Rh (the slow mode, Chu and Nose, 1979). When c > c., Z. where ( is... 

The non-aqueous system of spherical micelles of poly(styrene)(PS)-poly-(isoprene)(PI) in decane has been investigated by Farago et al. and Kanaya et al. [298,299]. The data were interpreted in terms of corona brush fluctuations that are described by a differential equation formulated by de Gennes for the breathing mode of tethered polymer chains on a surface [300]. A fair description of S(Q,t) with a minimum number of parameters could be achieved. Kanaya et al. [299] extended the investigation to a concentrated (30%, PI volume fraction) PS-PI micelle system and found a significant slowing down of the relaxation. The latter is explained by a reduction of osmotic compressibihty in the corona due to chain overlap. 

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