Layer-by-layer assembled multilayers of charged polyurethane and graphene oxide platelets for flexible and stretchable gas barrier films
- 주제(기타) Chemistry, Physical; Materials Science, Multidisciplinary; Physics, Multidisciplinary; Polymer Science
- 설명문(일반) [Noh, Min Ji; Oh, Min Jun; Choi, Jae Ho; Yoo, Pil J.] Sungkyunkwan Univ SKKU, Sch Chem Engn, Suwon 16419, South Korea; [Yu, Jae Chul; Chang, Young-Wook] Hanyang Univ, Dept Chem Engn, Ansan 15588, South Korea; [Kim, Woo-Jae] Ewha Womans Univ, Dept Chem Engn & Mat Sci, Seoul 03760, South Korea; [Park, Juhyun] Chung Ang Univ, Sch Chem Engn & Mat Sci, Seoul 06974, South Korea; [Yoo, Pil J.] Sungkyunkwan Univ SKKU, SKKU Adv Inst Nanotechnol SAINT, Suwon 16419, South Korea
- 관리정보기술 faculty
- 등재 SCIE, SCOPUS
- 발행기관 ROYAL SOC CHEMISTRY
- 발행년도 2018
- URI http://www.dcollection.net/handler/ewha/000000156956
- 본문언어 영어
- Published As http://dx.doi.org/10.1039/c8sm00706c
초록/요약
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.
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