Elastic moduli of multiblock copolymers in the lamellar phase

The linear elastic response of multiblock copolymer melts in the lamellar phase, where the molecules were composed of tethered symmetric A B diblock copolymers was studied by using a self-consistent field theory method. A real space approach to calculate the tensile and shear moduli as a function of block number was also presented. It was found that the increase in bridging fraction with block number, that follows the increase in modulus was not responsible for the increase in modulus. It was observed that the change in modulus was due to an increase in mixing of repulsive A and B monomers.