Deformation of a single polymer chain in two dimensions above and below the Theta temperature - A Monte Carlo study

Wittkop, Markus and Kreitmeier, Stefan and Göritz, Dietmar (1995) Deformation of a single polymer chain in two dimensions above and below the Theta temperature - A Monte Carlo study. COMPUTATIONAL POLYMER SCIENCE, 5 (4). pp. 187-196. ISSN 1052-0643

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Abstract

The deformation behavior of a single two-dimensional polymer chain above and below the Theta-temperature was studied using the bond-fluctuation model, Above the Theta-temperature, the deformation behavior was found to be similar to that in the athermal (infinite temperature) limit. The entropy is the dominating part of the deformation. Below the Theta-temperature, the deformation is completely different, After a short linear force regime the total force becomes independent of the extension. In this regime the deformation is represented by a coil-strand coexistence, and therefore, inhomogeneous. At low temperatures, the energy dominates the deformation pattern. At large strains, the coil-strand system becomes unstable. Several properties were evaluated to monitor this behavior.

Item Type: Article
Uncontrolled Keywords: BOND FLUCTUATION METHOD; 2 DIMENSIONS; COLLAPSE TRANSITION; COMPUTER-SIMULATION; SQUARE LATTICE; MODELS; MOLECULES; POINT; EXPONENTS; BEHAVIOR; Monte Carlo simulation; single chains; deformation behavior; temperature dependence; inhomogeneous deformation
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Dietmar Göritz
Depositing User: Dr. Gernot Deinzer
Date Deposited: 15 Nov 2023 11:01
Last Modified: 15 Nov 2023 11:01
URI: https://pred.uni-regensburg.de/id/eprint/52174

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