Highly oriented gold/nanoclay-polymer nanocomposites for flexible gas barrier films

Eun Ho Song, Byung Hyun Kang, Tan Young Kim, Hyun Jun Lee, Young Wook Park, Young Cho Kim, Byeong Kwon Ju

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Layer-by-layer (LBL) assembly, which uses electronic and ionic intermolecular bonding under nonvacuum conditions, is a promising technology for fabricating gas barrier films owing to its simple processing and easy formation of a multilayer structure. In this research, nanoclay-polymer multilayers of Na+-montmorillonite (Na-MMT) were fabricated. Particularly, the addition of AuCl3 on fabricated MMT layers caused a reaction with the surface silanol functional groups (Si-O-H) of the MMT platelets, resulting in the formation of Au2O3 on the MMT-polymer multilayers. The Au2O3 filled the vacancies between the MMT platelets and linked the MMT platelets together, thus forming a gas barrier film that reduced the water vapor transmission rate (WVTR) to 3.2 × 10-3 g m-2 day-1. AuCl3-treated MMT-polymer multilayers thus have the potential to be utilized for manufacturing gas barrier films for flexible electronics on a large scale.

Original languageEnglish
Pages (from-to)4778-4783
Number of pages6
JournalACS Applied Materials and Interfaces
Volume7
Issue number8
DOIs
Publication statusPublished - 2015 Mar 4
Externally publishedYes

Keywords

  • 2D materials
  • flexible gas barrier films
  • gold complex
  • nanoclay
  • water vapor transmission rate

ASJC Scopus subject areas

  • Materials Science(all)

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