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Behavior of a polymer chain in a critical binary solvent

M. Stapper·T. A. Vilgis
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Abstract

We present a field-theoretic renormalization group analysis of a polymer chain immersed in a binary good solvent close to its critical demixing point. We first show that this problem can be mapped on a bicritical field theory, i.e. a $(Φ^{2})^{2}$-model with a mass anisotropy. This implies that the end-to-end distance of the polymer is now controlled by a new critical exponent $ν_{B}$ related to the quadratic mass anisotropy operator $B$. To show this we solve the RG equation and calculate explicitly the exponents and the mean end-to-end length of the chain.

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BibTeXRIS

M. Stapper, T. A. Vilgis. 1998-02-12. Behavior of a polymer chain in a critical binary solvent. https://doi.org/10.1209/epl%2Fi1998-00542-5

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