| 초록 |
Recently, cooling systems become more and more important for effective heat release in various applications. The cooling systems using poly (N-isopropylacrylamide) (PNIPAm) has been investigated as effective future solutions for large-area buildings or plants. The previous studies on the composites of PNIPAm and polydimethylsiloxane (PDMS) have shown a unique lower critical solution temperature (LCST) behavior of rapid deswelling. In this study, we improved the thermal conduction and the content of PNIPAm in the composite systems for cooling applications. Therefore, polyurethane (PU) was used instead of PDMS to control evaporation and long-life cooling system. Well aligned pores of PU were successfully prepared by melt crystallization of solvent and subsequent sublimation of crystals. The infiltration of NIPAm solution into the pores could prepare a novel hydrogel composite. This strategy could find a promising application in the development of future cooling systems. |
