Buckling in Block Copolymers Membranes

PEZZUTTI A; VILLAR MA; VEGA DA

Simposio; V Simposio Binacional de Polímeros Argentino-Chileno, ARCHIPOL´09I, VIII Simposio Argentino de Polímeros, SAP VIII y IX Simposio Chileno de Química y Fisicoquímica de Polímeros, CHIPOL IX; 2009

Asociación de Polímeros Argentino-Chilena

We examined phase separation in a block copolymer membrane using a coupled composition deformation phase field method. In the hexagonal the topological deefcts have a strong effect in both, the shape of membrane and the equilibrium state of the pattern. Defects such as dislocations and disclinations can cause a thin film to spontaneously bend or buckle. While disclinations can cause the film to buckle into either suddle (negative disclinations) or a conical (positive disclinations) shapes, the nature of the bending of the membrane depends on the orientation of the Burgers vector.