Thermal composition fluctuations near the isotropic Lifshitz critical point in a ternary mixture of a homopolymer blend and diblock copolymer

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Thermal composition fluctuations near the isotropic Lifshitz critical point in a ternary mixture of a homopolymer blend and diblock copolymer

We have studied thermal composition fluctuations of a ternary symmetric homopolymer/diblock copolymer system of PEE/PDMS/PEE-PDMS @PEE and PDMS being poly~ethyl ethylene! and poly~dimethyl siloxane!, respectively# in its disordered state with small angle neutron scattering for concentration F of diblocks up to 15%. The phase diagram shows three characteristic regimes; ~1! below the Lifshitz con...

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We present results of the study of the non-monotonous behavior of the Lifshitz line as a function of temperature in ternary homopolymer/diblock-copolymer mixtures. The non-monotonous behavior of the Lifshitz line is due to the wave vector dependence of fluctuational corrections, which we treat in the framework of the renormalization group method. Our results are in agreement with the experiment...

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ژورنال

عنوان ژورنال: The Journal of Chemical Physics

سال: 2000

ISSN: 0021-9606,1089-7690

DOI: 10.1063/1.481128