Production of CaCO3/hyperbranched polyglycidol hybrid films using spray-coating technique

► Hyperbranched polyethers were prepared via efficient one-pot-synthetic route. ► Hyperbranched polymers are functionalized with sulfate, carboxylic or phosphate-esters groups. ► Hyperbranched polymers were employed to control CaCO3 particle morphology. ► Spray-coating technique led to dense vaterite, calcite-vaterite or calcite thin films. ► Mechanical properties of selected composites were compared to neat calcite.