| 초록 |
Poly-N-isopropylacrylamide (PNIPAm) is a temperature-sensitive hydrogel, polymer that generally represents the LCST (lower critical solution temperature) behavior around 32℃. This LCST is used in many applications such as drug delivery, wound dressings, capacitor, smart coating and mask packs. Hydrogel is a material with a 3D network structure and has advantage of acting like a living body tissue when absorbing water. In this study, PNIPAm was fabricated by E-beam irradiation with hydrophilic polymer of Polyvinylpyrrolidone (PVP). E-beam is eco-friendly, ecnomical and not affected by temperature. PVP was added to NIPAAm to increase cross-linking degree of the hydrogel. The irradiation dose was 25~100 kGy, and the effect of temperature on the swelling of NIPAAm/PVP hydrogel in deionized water and the change in swelling ratio according to the irradiation dose was measured. Properties of hydrogel were characterized by various instruments. |
