Kinetics of microphase separation in block copolymers: A molecular-dynamics study
School of Physical Sciences, Jawaharlal Nehru University - New Delhi-110067, India
Received: 20 October 2014
Accepted: 14 January 2015
We study the kinetics of microphase separation in block copolymers (BCPs) via molecular-dynamics (MD) simulations in d = 3. The BCPs consist of AnBm polymer chains. In the early stages, the BCP segregation is analogous to usual spinodal decomposition in fluid or polymer mixtures. At late times, the BCP evolution freezes into a micro-scale morphology dictated by the n : m ratio, e.g., lamellar, cylindrical, droplet, etc. We investigate the crossovers in a) the scaling forms of the correlation function and structure factor; and b) the domain growth law.
PACS: 64.70.km – Polymers / 64.75.Gh – Phase separation and segregation in model systems (hard spheres, Lennard-Jones, etc.) / 64.75.Va – Phase separation and segregation in polymer blends/polymeric solutions
© EPLA, 2015