| 초록 |
TEMPO-oxidized cellulose nanofibrils (TOCNF) with excellent transparency, flexibility, and gas barrier properties is an attractive biodegradable material. Here, layered double hydroxide (LDH) was used to prevent cellulose from deteriorating its properties by moisture. LDH was exfoliated in TOCNF dispersion containing NaCl, MgCl2, and CaCl2 salts of various concentrations, and LDH provided tortuous path to cellulose matrix. The TOCNF/LDH dispersion was sprayed on top of oxygen plasma treated PP film, and the layer had a thickness of about 500nm after drying. The TOCNF coated films showed superior oxygen barrier properties to uncoated films. In particular, the addition of LDH allowed oxygen barrier properties to be maintained even under high humidity. Therefore, this work provides a strategy for improving existing packaging films in an eco-friendly manner based on cellulose. |
