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Quasi-elastic light scattering from ternary mixtures of poly(methyl methacrylate)/poly(dimethylsiloxane) in tetrahydrofuran

In the semidilute range at one total polymer concentration C T higher than the overlap concentration and far from the «cloud point», two distinct modes are observed in the autocorrelation function. The variation of the amplitudes and of the frequencies of these two relaxation processes is studied as a function of the relative composition of the «visible» polymer (PMMA) and the scattering vector