Hydrogen gas barrier property of polyelectrolyte/GO layer-by-layer films

被引：17
作者：
Zhao, Lili [1 ]
Sun, Haixiang [1 ]
Kim, Namhoon [2 ]
Lee, Joonghee [2 ]
Kong, Ying [1 ]
Li, Peng [1 ]
机构：
[1] China Univ Petr, Coll Chem Engn, State Key Lab Heavy Oil Proc, Qingdao 266580, Peoples R China
[2] Chonbuk Natl Univ, Dept Polymer & Nano Engn, BIN Fus Res Team, Jeonju 561756, Jeonbuk, South Korea
来源：
JOURNAL OF APPLIED POLYMER SCIENCE | 2015年 / 132卷 / 20期
基金：
中国国家自然科学基金;
关键词：
films; packaging; self-assembly; EPITAXIAL GRAPHENE; GRAPHITE OXIDE; OXYGEN BARRIER; NANOCOMPOSITES; CONDUCTIVITY; SHEETS;
D O I：
10.1002/app.41973
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Different types of ultrathin multilayer composite membranes adsorbed on polyethylene terephthalate (PET) substrates are fabricated by the layer-by-layer (LBL) self-assembly technique. The hydrogen gas barrier performances of these membranes are measured using a pressure permeation instrument. Polyethylenimines/graphene oxide (PEI/GO) are chosen as the optimal system; the multilayer film reduces the hydrogen transmission rate of the uncoated PET film from 1357 to 24 cm(3)/(m(2) 24 h 0.1 MPa). The membrane assembly process for the PEI/GO system is analyzed with UV-Visible spectroscopy, and the flat morphology of the ultrathin film is observed by scanning electron and atomic force microscopies. Moreover, in order to fully characterize the PEI/GO multilayer film system, we investigate the effects of multiple variables on the hydrogen resistance performance. These include the molecular weight of PEI, concentrations of PEI and GO, number of bilayers, soaking time, and drying methods. The film thickness is found to increase linearly during the LBL assembly process. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41973.
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页数：9
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