Theta-polymers in crowded media under the stretching force
Abstract
We study the peculiarities of stretching of globular polymer macromolecules in a disordered (crowded) environment, using the model of self-attracting self-avoiding walks on site-diluted percolative lattices in space dimensions d=3. Applying the pruned-enriched Rosenbluth chain-growth method (PERM), we construct the phase diagram of collapsed-extended state coexistence when varying temperature and stretching force. The change in shape characteristics of globular polymers under stretching is analyzed as well.
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