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Layer-by-layer assembled multilayers of charged polyurethane and graphene oxide platelets for flexible and stretchable gas barrier films

Title
Layer-by-layer assembled multilayers of charged polyurethane and graphene oxide platelets for flexible and stretchable gas barrier films
Authors
Noh, Min JiOh, Min JunChoi, Jae HoYu, Jae ChulKim, Woo-JaePark, JuhyunChang, Young-WookYoo, Pil J.
Ewha Authors
김우재
Issue Date
2018
Journal Title
SOFT MATTER
ISSN
1744-683XJCR Link

1744-6848JCR Link
Citation
SOFT MATTER vol. 14, no. 32, pp. 6708 - 6715
Publisher
ROYAL SOC CHEMISTRY
Indexed
SCI; SCIE; SCOPUS WOS scopus
Document Type
Article
Abstract
With the advent of the era of consumer-oriented displays and mobile devices, the importance of barrier film coatings for securing devices from oxygen or moisture penetration has become more salient. Recently developed approaches to generate gas barrier films in a combination of polyelectrolyte multilayer matrices and incorporated inorganic nanosheets have shown great potential in outperforming conventional gas barrier films. However, these films have the intrinsic drawback of vulnerability to brittleness and inability to stretch for flexible device applications. To overcome this issue, we present a method in which we prepare multilayered films of complementarily charged polyurethane and graphene oxide platelets using spin-assisted, layer-by-layer self-assembly to obtain well-stacked film structures. As a result, the multilayered, thin films deposited on a poly(ethylene terephthalate) (PET) substrate can exhibit significantly reduced oxygen penetration properties (approximate to 30 cc m(-2) day(-1) for the oxygen transmission rate) while still demonstrating large bending or stretching deformations. Therefore, the proposed approach in this study is anticipated to be extensively utilized for surface coating and protection of flexible and stretchable devices under various operating conditions.
DOI
10.1039/c8sm00706c
Appears in Collections:
엘텍공과대학 > 화학신소재공학전공 > Journal papers
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