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Fabrication of cellulose triacetate/graphene oxide porous membrane
Author(s) -
Ionita Mariana,
Crica Livia Elena,
Voicu Stefan Ioan,
Pandele Andreea Madalina,
Iovu Horia
Publication year - 2016
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.3646
Subject(s) - cellulose triacetate , membrane , materials science , scanning electron microscope , phase inversion , oxide , chemical engineering , transmission electron microscopy , graphene , cellulose , cellulose acetate , sonication , composite number , nanotechnology , composite material , chemistry , engineering , metallurgy , biochemistry
Cellulose triacetate (AC)/graphene oxide (GO) porous membranes were successfully fabricated by combining ultrasonication and phase inversion method. The structures and morphologies of the resultant composite membranes were investigated by X‐ray diffraction (XRD), scanning electron microscopy, and transmission electron microscopy, respectively. Microscopic and X‐ray diffraction measurements revealed that GO sheets were uniformly dispersed within the AC matrix. The pore size and structure were modulated by changing GO concentration from 0.25 to 1 wt%. Membrane thermal properties were also studied. Among all tested membranes, the most favorable GO amount was 1 wt%, giving Td 3% of 274°C, which represents a 22°C enhancement compared with AC. Conversely, the membranes showed improved barrier properties against water and ethanol. The decrease of both ethanol and water fluxes was assigned to the stabilization of composite membrane structure, as a result of GO progressive addition. Bovine serum albumin rejection assay indicated an increasing from 78% in the case of CA membrane to 99% in the case of CA/GO 1 wt% of the rejection degree after 90 min. Copyright © 2015 John Wiley & Sons, Ltd.