Networklike Pattern Formation in Phase Separating Polymer Solutions: A Molecular Dynamics Study
نویسندگان
چکیده
The dynamics of phase separation of a quenched polymer solution is studied using a stochastic molecular dynamics simulation. At early times, the elastic nature of the polymer chains generates a networklike domain morphology for sufficiently dense polymer solutions. However, at late times, this network structure breaks up into disconnected polymer-rich domains to minimize the interfacial energy. Our simulations explain why different experiments carried out to different time regimes seem to produce contradictory results, and strongly indicate that the true late-time growth kinetics of quenched polymer solutions belong to the same universality class of small molecular mixtures. [S0031-9007(97)04972-7]
منابع مشابه
Network domain structure in phase-separating polymer solutions
Results from molecular dynamics simulations of phase separation in a quenched polymer solution are presented for both twoand three-dimensional systems. Simulations clearly demonstrate the existence of a networklike pattern formation at an early to intermediate time regime for sufficiently dense polymer solutions. This network structure, however, relaxes at late times as the minimization of the ...
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