Hydrolyzed hexagonal boron nitride/polymer nanocomposites for transparent gas barrier film

Tan Young Kim, Eun Ho Song, Byung Hyun Kang, Se Jung Kim, Yun-Hi Lee, Byeong Kwon Ju

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

A flexible thin gas barrier film formed by layer-by-layer (LBL) assembly has been studied. We propose for the first time that hexagonal boron nitride (h-BN) can be used in LBL assembly. When dispersed in water through sonication-assisted hydrolysis, h-BN develops hydroxyl groups that electrostatically couple with the cationic polymer polydiallyldimethylammonium chloride (PDDA). This process produces hydroxyl-functional h-BN/PDDA nanocomposites. The nanocomposites exhibit well exfoliated and highly ordered h-BN nanosheets, which results in an extremely high visual clarity, with an average transmittance of 99% in the visible spectrum. Moreover, well aligned nanocomposites extend gas diffusion path that reduce water vapor transmission rate to 1.3 ×10-2 g m-2 d-1. The simple and fast LBL process demonstrated here can be applied in many gas barrier applications.

Original languageEnglish
Article number12LT01
JournalNanotechnology
Volume28
Issue number12
DOIs
Publication statusPublished - 2017 Feb 21

Keywords

  • gas barrier
  • hydroxyl-functional hexagonal boron nitride nanosheets (OH-BNNS)
  • layer by layer
  • oxygen transmission rate (OTR)
  • transparency
  • water vapor transmission rate (WVTR)

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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