6533b7d9fe1ef96bd126c064

RESEARCH PRODUCT

Evidence for the time-temperature superposition principle from Monte-Carlo simulations of the glass transition in two-dimensional polymer melts

Kurt BinderKurt KremerHans-peter Wittmann

subject

Quantitative Biology::BiomoleculesSuperposition principleTime–temperature superpositionChemistryMonte Carlo methodRelaxation (physics)ThermodynamicsRadiusGlass transitionGyrationMolecular physicsLattice model (physics)

description

The bond fluctuation model on a square lattice with a bond-length dependent potential exhibits in simulations of slow cooling a kinetic glass transition where the system falls out of equilibrium. Extending previous work, the relaxation functions of gyration radius and end-to-end distance, and the bond autocorrelation function of the polymers are presented and related to the time-dependent displacements of inner monomeric units and center of gravity of the whole chains, respectively. Over a wide temperature range the data can be collapsed on master curves satisfying the time-temperature superposition principle for Rouse dynamics.

https://doi.org/10.1002/mats.1992.040010501