Super‐hydrophobic (SH) surfaces have garnered significant attention due to their potentially diverse range of applications (e.g., self‐cleaning surfaces, waterproof fabrics, non‐stick containers, and microfluidics). The manufacturing methods of SH surfaces are generally expensive and often require specialized tools. In this study, we employed simplified production methods, and we focused on cheap chemical modification of common polymers using nanocomposites to create SH surfaces. Polymer nanocomposites have many advantages as a coating by increasing volume/area of nanoparticles. Coating clarity, surface hydrophobicity, roughness, electrical properties, and crystallinity are some unique behaviors of nanocomposites. We studied the physical properties of these chemically modified polymers to explore the acquired SH property. We investigated SH films using many techniques such as size‐exclusion chromatography (SEC), X‐ray diffraction (XRD), differential scanning calorimetry (DSC), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and dynamic light scattering (DLS). Our goal was to verify that these materials could be used as SH films that acted as cleaned, solid surfaces in direct contact with packaging surfaces. POLYM. COMPOS., 38:E147–E156, 2017. © 2016 Society of Plastics Engineers

A facile synthetic strategy for well‐defined poly(ethyleneimine)‐polystyrene (PEI‐PS) block copolymers utilizing controlled radical polymerization through the macroinitiator approach is presented. Poly(2‐methyl‐2‐oxazoline) containing an alkoxyamine initiating unit at the chain end was prepared by ring opening cationic polymerization of 2‐methyl‐2‐oxazoline through a nitroxide containing initiator. Polymerization of styrene with the poly(2‐methyl‐2‐oxazoline) macroinitiator was carried out under nitroxide‐mediated radical polymerization (NMRP) conditions. GPC and NMR revealed that the polymerization was accurately controlled and well‐defined polystyrene chains were attached to the chain end of the macroinitiator to give the poly(2‐methyl‐2‐oxazoline‐b‐styrene) block copolymers. Hydrolysis of the poly(2‐methyl‐2‐oxazoline) block resulted effectively in poly(ethyleneimine‐b‐styrene) block copolymers.

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