Effect of confinement on coil-globule transition

Mishra, P. K. ; Kumar, Sanjay (2004) Effect of confinement on coil-globule transition The Journal of Chemical Physics, 121 (17). Article ID 8642. ISSN 0021-9606

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Official URL: http://aip.scitation.org/doi/abs/10.1063/1.1796233

Related URL: http://dx.doi.org/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 nonmonotonic behavior with inter wall 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 transition occurs at higher temperature as compared to its bulk value of 2d and 3d. The variation of θ-temperature with D shows a reentrance behavior. We also calculate the force of compression exerted by the walls (lines) on the polymer.

Item Type:Article
Source:Copyright of this article belongs to American Institute of Physics.
Keywords:Polymers; Thermal Analysis; Thermodynamic Properties; Solvents
ID Code:102640
Deposited On:02 Feb 2018 04:13
Last Modified:02 Feb 2018 04:13

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