Effect of confinement on coil-globule transition

Details Effect of confinement on coil-globule transition Effect of confinement on coil-globule transition

2004-06-15

arxiv.org/abs/cond-mat/0406331v1

J. Chem. Phys. Vol. 121 (17) (2004) 8642.

Physics

Condensed Matter

Statistical Mechanics

11 pages with 7 eps figures

Scientific paper

10.1063/1.1796233

The equilibrium thermodynamic properties of a linear polymer chain confined to a space between two impenetrable walls (lines) at a distance $D$ under various solvent conditions have been studied using series analysis and exact enumeration technique. We have calculated the end to end distance of polymer chain, which shows a non-monotonic behaviour with inter wall ^M separation $D$. The density distribution profile shows a maxima at a particular value of ${(D=)}D^*$. Around this $D^*$, our results show that the collapse^M transition occurs at higher temperature as compared to its bulk value of 2d and 3d. The variation of $\theta-$ temperature with $D$ shows a re-entrance behaviour. We also calculate the force of compression exerted by the walls (lines) on the polymer.

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