We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
SPTA-PVA/CDA-GO/PVDF复合膜的制备与表征.
- Authors
徐悦; 曾正; 袁海宽; 陆杰
- Abstract
Graphene oxide (GO) was modified by 1,4--cyclohexanediamine (CDA), and polyvinyl alcohol (PVA) was crosslinked by 4-sulfoph. thalic acid (SPTA). Hydrophilized polyvinylidene fluoride (PVDF) ultrafiltration membrane as support, SPTA-PVA/CDA-GO/PVDF composite membrane was prepared through vacuum filtration and drop coating. The composite membrane was characterized by ATR--FTIR, SEM and contact angle, and the pervaporation desalination performance of composite membrane was tested. The results show that the modification of CDA extended the interlayer spacing of GO nanosheets, thus improving the water permeability of CDA-GO layer, and the crosslinked PVA layer enhanced the surface hydrophilicity and stability of composite membrane, consequently, improved the water absorption and water transport properties of composite membrane. The composite membrane obtained a flux of 15.6 kg/(m2*h.) and a rejection of 99.99% when treating with concentration of 3.5% NaCl solution at 70 C.
- Subjects
CONTACT angle; POLYVINYL alcohol; SURFACE stability; GRAPHENE oxide; PERVAPORATION; COMPOSITE membranes (Chemistry); POLYVINYLIDENE fluoride; PERMEABILITY
- Publication
Journal of Shanghai University of Engineering Science / Shanghai Gongcheng Jishu Daxue Xuebao, 2022, Vol 36, Issue 4, p341
- ISSN
1009-444X
- Publication type
Article