Self-organization of patterned CaCO3/polymer composite films:: Tuning of their morphologies by the change of molecular weights of acidic polymers

Calcium carbonate (CaCO3) thin films with periodic surface patterns are formed on thin film matrices of a polysaccharide derivative from a solution containing poly(acrylic acid) (PAA). The morphologies of the patterned films have been tuned by the change of molecular weights of the PAA.