Synthesis of amphiphilic liquid crystalline multiblock copolymer films and evaluation of their microphase separation structure

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ABA-, A2B-, and A2BA2 type “multi”block copolymers consisting of hydrophobic and liquid crystalline polymethacrylate as A-block and hydrophilic poly(ethylene oxide) as B-block were synthesized to make smaller microphase separation structure with keeping film forming ability of the resulting multiblock copolymers. As a result, ABA triblock copolymers exhibited a half-sized microphase separation structure when the total molecular weight and the molecular weight of B-block in ABA triblock copolymers were same to those in AB diblock copolymers.