Abstract
Abstract Microscopic theory of smectic ordering in melts of rod-coil copolymers is proposed. It is shown that a second-order phase transition nematic-smectic A or a first-order transition nematic-smectic C may occur in the system as Flory's parameter of incompatibility of the blocks, x is increased. A number of phase transitions between different smectic A and C phases are also predicted. The most stable structure for large x is always SmA2, implying head-to-head arrangement of rigid rods in double lamellar sheets.
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