| 초록 |
Ionogels are porous crosslinked polymer network confining ionic liquid (IL) inside and owning combined property of the polymer and IL such as thermo responsiveness, mechanical durability and electric conductivity. Poly(N-isopropylacrylamide-co-N,N’-diethylacrylamide) (PNN) was able to absorb IL and swell upon heating above room temperature (~35 °C), but the weakened mechanical durability has limited its application as stretchable materials. To overcome this difficulty, double network (DN) system of PNN ionogels was fabricated. PNN ionogels were associated with chitosan as the second network (PNNC), by the adjustment of chitosan crosslinking, we were able to enhance mechanical properties such as increasing stretch ability and stress uptake capacity, as well as preserving its thermal responsiveness. Besides that, due to the ionic conductivity property of IL, prepared PNNC ionogels can be used as stretchable conductor which can be applied in electrical sensor. |
