Synthesis of a thermosensitive surface by construction of a thin layer of poly (N-isopropylacrylamide) on maleimide-immobilized polypropylene

► A thin layer of PNIPAAm was constructed on activated polypropylene surface. ► PNIPAAm layer corrected both depressions and fissures of the surfaces. ► Water contact angles of the layered surfaces revealed a transition at 33.5-36.5 °C. ► Modified polypropylene surfaces showed nature both hydrophilic and hydrophobic.