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Ordering and Reverse Ordering Mechanisms of Triblock Copolymers in the Presence of Solvent
Theoretical Division and Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA
Department of Physics & Astronomy, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
* Author to whom correspondence should be addressed.
Received: 21 January 2009; in revised form: 24 February 2009 / Accepted: 24 February 2009 / Published: 27 February 2009
Abstract: Self-consistent field theory is used to study the self-assembly of a triblock copolymer melt. Two different external factors (temperature and solvent) are shown to affect the self-assembly. Either one or two-step self-assembly can be found as a function of temperature in the case of a neat triblock melt, or as a function of increasing solvent content (for non-selective solvents) in the case of a triblock-solvent mixture. For selective solvents, it is shown that increasing the solvent content leads to more complicated self-assembly mechanisms, including a reversed transition where order is found to increase instead of decreasing as expected, and re-entrant behavior where order is found to increase at first, and then decrease to a previous state of disorder.
Keywords: Triblock copolymers; self-assembly; self-consistent field theory
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Maniadis, P.; Rasmussen, K.O.; Thompson, R.B.; Kober, E.M. Ordering and Reverse Ordering Mechanisms of Triblock Copolymers in the Presence of Solvent. Int. J. Mol. Sci. 2009, 10, 805-816.
Maniadis P, Rasmussen KO, Thompson RB, Kober EM. Ordering and Reverse Ordering Mechanisms of Triblock Copolymers in the Presence of Solvent. International Journal of Molecular Sciences. 2009; 10(3):805-816.
Maniadis, Panagiotis; Rasmussen, Kim O.; Thompson, Russell B.; Kober, Edward M. 2009. "Ordering and Reverse Ordering Mechanisms of Triblock Copolymers in the Presence of Solvent." Int. J. Mol. Sci. 10, no. 3: 805-816.