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The object of this study is to investigate PU/hydrogel composites prepared by γ-ray radiation method.We used nanosized clay solution or powder, Polyurethane (PU), thermo-sensitive N-isopropyl acrylamide (NIPAAm) and acrylic acid (AAc) as starting materials to prepare PU/hydrogel nanocomposite products.The dipping and weighing tests, Material Testing Machine (LLOYD) were utilized to analyze the physical and mechanical properties differentially.