Block Copolymers Containing Liquid Crystalline Segments

4 Block Copolymers Containing Liquid Crystalline Segments 

Flory-Huggins x parameter, and the volume fraction of the A block, Z. The structure-property relationship for coil-coil diblock copolymer systems is relatively well understood both experimentally [14-19] and theoretically [20-23]. Chain stretching normal to the interface leads to a positive deviation of the scaling exponent [14]. For example, scaling behavior for a conven- 

Liquid crystal block copolymers are a recently explored group of polymers which combine microphase separation and liquid crystallinity. Yet, as early as 1963, Gratzer and Doty [37] reported the first block copolymers containing two polypeptide blocks in which one of the blocks, poly(y-benzyl-L-glutamate) (PBLG), was already well known to be liquid crystalline. In principle, all the LCP structures shown in Fig. 1 can be incorporated into block copolymer structures with a second flexible coil or LC block. Some of the possible LC-BCP structures are shown in Fig. 2. Due to the limited nature of this review, structures such as the grafted LC copolymers [38] and various multiblock LC copolymers [39] will not be covered. 

---

Mao, G., and C.K. Ober. 1997. Block copolymers containing liquid crystalline segments. Acta... 

---