Compression-Induced Phase Transitions in Water-Soluble Polymer Brushes: The n-Cluster Model
نویسنده
چکیده
We describe the compression of a water-soluble polymer brush which undergoes compressioninduced phase transitions. The solution behavior of the polymer comprising the brush is described using the de Gennes “n-cluster” model which predicts a region of coexistence between dense and dilute phases. We show that compression of the brush can induce the formation of a dense coexisting phase or the elimination of a dilute phase. These compression-induced transitions give rise to discontinuites in compression force profiles, which can be measured experimentally using the surface force apparatus or the atomic force microscope.
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