| 초록 |
To avoid the threat of chemical warfare agents (CWAs) used in war and terrorism, a membrane that can block CWAs has been studied. Various 2D materials such as MOF, CWNT, and Mexene have been used to improve selectivity that air and moisture can be permeable and CWAs can be impermeable. However, to obtain protection from these materials, complicated processes and specific conditions are required. CWAs have a much larger molecular diameter than air and water. If the channel of the membrane is smaller than the size of the CWA, the permeation of the CWA is reduced without any treatment. Therefore, we prepared graphene oxide (GO) multilayer membrane that reduces the transmittance of CWAs by controlling the spacing between the GO sheets. The protective performance of the membrane was investigated by using dimethyl methylphosphonate (DMMP), a nerve agent simulant, and a vial-in-vial permeation system. The selective protection performance improved as the interlayer distance decreased. |
