Liu, Hongyu Bandyopadhyay, Parthasarathi Kshetri, Tolendra Kim, Nam Hoon Ku, Bon-Cheol Moon, Bongho Lee, Joong Hee 2024-01-20T01:34:30Z 2024-01-20T01:34:30Z 2021-09-01 2017-04-01 1359-8368 https://pubs.kist.re.kr/handle/201004/122862 A facile approach for the fabrication of chemically-modified reduced graphene oxide (RGO) based multilayer films was developed for gas barrier applications. Polyethyleneimine (PEI) and poly(sodium 4-styrenesulfonate) (PSS) were utilized as surface modifiers to yield water-dispersible RGO with opposite charges. Altering the deposition pH of PEI-RGO layer resulted in different phase morphology and bonding of the multilayer films. PEI-RGO and PSS-RGO were assembled into multilayer films via a layer-by-layer (LbL) assembly method through electrostatic and hydrogen bonding interactions, respectively. The LBL assembly of polymer-decorated RGO based multilayer films were characterized by various characterization techniques. Hydrogen gas transmission rate (H(2)GTR) of the hydrogen bonding interaction based LbL film with 24 bilayers was 5.8 cc/m(2).d . atm; and H(2)GTR value was 46.2 cc/m(2).d . atm for the corresponding LbL film based on electrostatic interactions. Hydrogen bonding interaction based multilayer films exhibited very low H(2)GTR values compared to electrostatic interaction based multilayer and bare polyethylene terephthalate films. (C) 2017 Elsevier Ltd. All rights reserved. English ELSEVIER SCI LTD OXYGEN BARRIER THIN-FILMS MECHANICAL-PROPERTIES OXIDE NANOCOMPOSITE COMPOSITE FILM TRANSPARENT PROPERTY DISPERSIONS REDUCTION HYBRIDS Layer-by-layer assembled polyelectrolyte-decorated graphene multilayer film for hydrogen gas barrier application Article 10.1016/j.compositesb.2017.02.007 1 COMPOSITES PART B-ENGINEERING, v.114, pp.339 - 347 COMPOSITES PART B-ENGINEERING 114 339 347 scie scopus 000401382600032 2-s2.0-85013124244 Engineering, Multidisciplinary Materials Science, Composites Engineering Materials Science Article OXYGEN BARRIER THIN-FILMS MECHANICAL-PROPERTIES OXIDE NANOCOMPOSITE COMPOSITE FILM TRANSPARENT PROPERTY DISPERSIONS REDUCTION HYBRIDS Thin films Thermal properties Surface analysis Assembly