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Singh A, Puri S, Dasgupta C. Kinetics of phase separation in polymer mixtures: a molecular dynamics study. J Chem Phys. 2014;140(24):244906doi: 10.1063/1.4884824.
Singh, A., Puri, S., & Dasgupta, C. (2014). Kinetics of phase separation in polymer mixtures: a molecular dynamics study. The Journal of chemical physics, 140(24), 244906. https://doi.org/10.1063/1.4884824
Singh, Awaneesh, et al. "Kinetics of phase separation in polymer mixtures: a molecular dynamics study." The Journal of chemical physics vol. 140,24 (2014): 244906. doi: https://doi.org/10.1063/1.4884824
Singh A, Puri S, Dasgupta C. Kinetics of phase separation in polymer mixtures: a molecular dynamics study. J Chem Phys. 2014 Jun 28;140(24):244906. doi: 10.1063/1.4884824. PMID: 24985677.
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J Chem Phys. 2014 Jun 28;140(24):244906. doi: 10.1063/1.4884824.

Kinetics of phase separation in polymer mixtures: a molecular dynamics study.

The Journal of chemical physics

Awaneesh Singh, Sanjay Puri, Chandan Dasgupta

Affiliations

  1. Department of Physics, Indian Institute of Science, Bangalore - 560012, India.
  2. School of Physical Sciences, Jawaharlal Nehru University, New Delhi - 110067, India.

PMID: 24985677 DOI: 10.1063/1.4884824

Abstract

We present detailed results from a molecular dynamics (MD) simulation of phase-separation kinetics in polymer mixtures. Our MD simulations naturally incorporate hydrodynamic effects. We find that polymeric phase separation (with dynamically symmetric components) is in the same universality class as segregation of simple fluids: the degree of polymerization only slows down the segregation kinetics. For d = 2 polymeric fluids, the domain growth law is L(t) ∼ t(ϕ) with ϕ showing a crossover from 1/3 → 1/2 → 2/3. For d = 3 polymeric fluids, we see the crossover ϕ = 1/3 → 1. Our MD simulations do not yet access the inertial hydrodynamic regime (with L ∼ t(2/3)) of phase separation in 3-d fluids.

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