Department of Chemistry, Chung-Ang University, Seoul 06974, Republic of Korea.
Department of Graphic Arts Information Engineering, Pukyong National University, Busan 48547, Republic of Korea.
J Nanosci Nanotechnol. 2019 Jul 1;19(7):4299-4304. doi: 10.1166/jnn.2019.16333.
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.
本文展示了一种可扩展的棒涂纳米复合有机-无机杂化膜的制备方法，并开发了用于通用包装的坚固阻隔膜。通过棒涂组合印刷聚合物和纳米复合材料，开发了一种简便有效的阻隔膜制备方法。基于对几种材料组合的初步调查，制备了一种合理化的双层纳米复合膜。阻隔膜中的层数显著改变了氧气阻隔性能，对于 1wt%乙烯-乙烯醇（EVOH）插层膜，5 层样品的氧气透过率（OTR）降低到 3 层样品的 OTR 的 31.69%（112.8 对 35.75 cc/（m²·天））。此外，精细调整 EVOH 聚合物的用量可以进一步改善氧气阻隔性能。插层 2wt%EVOH 的 OTR 从 1wt%样品的 35.75 提高到 11.90 cc/（m²·天），提高了 4.25 倍。整体阻隔特性证明，我们的方法可用于大面积沉积、耐氧、通用包装应用。
