| 초록 |
Graphene oxide (GO), a highly oxidized graphene sheet, is a distinguished two-dimensional nanosheet. GO membranes exhibit good CO2 separation properties due to its various polar functional groups with oxygen resulting in high CO2 sorption properties. Recently, GO nanosheets have been incorporated into polymer membranes, expecting the synergistic effect of GO and polymer matrix. There is, however, little research on GO as a crosslinker not merely as an additive even though it has high potential due to available functional groups for further reaction. Here, we prepared GO/polymer membranes by crosslinking reactions between polar groups on GO basal plane and bi-functional crosslinking agents at different temperature (100~140oC). Optimum crosslinking condition was found by gas transport, mechanical, chemical properties characterization of samples. Degree of crosslinking in GO/polymer nano-composites affected gas transport through these membranes. |
