Theory of microphase separation of homopolymer-oligomer mixtures

Details Theory of microphase separation of homopolymer-oligomer mixtures Theory of microphase separation of homopolymer-oligomer mixtures

2002-10-26

arxiv.org/abs/cond-mat/0210590v1

Physics

Condensed Matter

Statistical Mechanics

4 pages, 5 figures, RevTeX

Scientific paper

Microphase separated structure consisting of the periodic alternation of the layers of stretched homopolymer chains surrounded by perpendicularly oriented oligomeric tails is studied for both, strongly bonded (ionic) systems and weakly (hydrogen) bonded systems. Our approach is based on the fact that the structure period is determined by alternating associations between the head group of the surfactant and the interacting group of the polymer. Oligomer distribution along the homopolymer chain is described by the effective equation of motion with the segment number playing the role of time. As a result, experimentally observed temperature dependence of the structure period, as well as the dependence of the point of order--disorder transition are determined as functions of the oligomeric fraction.

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