High Throughput Bar-Coating Processed Organic–Inorganic Hybrid Multi-Layers for Gas Barrier Thin-Films
Herein, we demonstrate the preparation of a scalable bar-coated nanocomposite organic–inorganic hybrid film and developed robust barrier films for general purpose packaging. Using combinatory printing of polymers and nanocomposites by bar coating, a facile and effective barrier
film fabrication method was developed. Based on a preliminary survey with several material combinations, a rationalized two-fold nanocomposite film was fabricated. The number of layers in the barrier film significantly modified oxygen barrier performance such that, for the 1 wt% ethylene vinyl
alcohol (EVOH) intercalated film, the oxygen transmission rate (OTR) of the 5-layer sample was reduced to 31.69% of the OTR of the 3-layer sample (112.8 vs. 35.75 cc/(m2 · day)). In addition, fine tuning the amount of EVOH polymer enabled further improvement of oxygen barrier
performance. Intercalation of 2 wt% EVOH resulted an OTR improvement from 35.75 in the 1 wt% sample to 11.90 cc/(m2 ·day), which is a 4.25-fold enhancement. Overall barrier characteristics proved that our approach could be used for large-area deposited, oxygen resistant,
general purpose packaging applications.
Keywords: Bar Coating; Barrier Film; Clay; Nanocomposite
Document Type: Research Article
Affiliations: 1: Department of Chemistry, Chung-Ang University, Seoul 06974, Republic of Korea 2: Department of Graphic Arts Information Engineering, Pukyong National University, Busan 48547, Republic of Korea 3: Department of Chemistry Education, Seoul National University, Seoul 08826, Republic of Korea 4: Department of Chemical and Biomolecular Engineering, Sogang University, Seoul 04107, Republic of Korea
Publication date: 01 July 2019
- Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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