Oxygen transmission of transparent diamond-like carbon films

Influence of film structure on gas barrier properties of SiOxNy films

“…In this range, the minimum OTR was 0.71 cc/m 2 day atm obtained at a N 2 / (N 2 + Ar) value of 0.04. This value is equivalent to or better than those reported for films which show good barrier properties such as PET/SiO x [6], PET/DLC [13,14] and PET/AlO x [4]. However, the OTR rapidly increased with increasing nitrogen gas ratio above N 2 / (N 2 + Ar) of 0.12.…”

“…Recent applications demand higher gas barrier performance from the packaging, for instance for longer shelf life; however, it is difficult to realize the required higher performance by using oxide films. For better gas barrier performance, two film materials, DLC [11][12][13][14][15] and silicon oxynitride (SiO x N y ) [16][17][18], appear to be promising. In particular, SiO x N y films clearly show higher gas barrier performance compared to SiO x films [18].…”

Barrier properties to surrogates of hydrogenated carbon nano-films deposited on PET by plasma-enhanced chemical vapour deposition

“…Poly(ethylene terephthalate) (PET) is considered one of the most important polymers in the packaging market because it has excellent tensile and impact strength, chemical resistance, optical transparency, processability, lightweight and is also recyclable (Awaja & Pavel 2005;Yamamoto et al 2005;Dimitrov et al 2013). However, the massive use of PET bottles has contributed to the accumulation of more and more PET in rubbish tips and elsewhere, and has maximised its participation in plastic solid waste (PSW) (Rosca & Vergnaud 2006;Al-Salem et al 2009;Hopewell et al 2009).…”

Recent Progress in Gas Barrier Thin Film Coatings on PET Bottles in Food and Beverage Applications

“…The current commercial carbon thin films have a slight, brownish to golden, tint [26]. Although this may restrict applicable product categories of carbon coated PET bottles, from the viewpoint of the visual quality of products, the degree of the tint appears to position within the scope of consumer acceptance, based on the commercial products of white wine ( Figure 4) and edible oil categories in the Japanese market.…”

“…ERDA (Elastic Recoil Detection Analysis) analyses showed oxygen components up to 10% may be present in the carbon thin films [4,28], which is considered to be mainly derived from water vapor from PET substrates. The advantage of the use of acetylene lies in high deposition rates and economics, while CH4 (methane) is used in many studies [4,26]. At least carbon thin films derived from acetylene contain the carbon bonding of sp 3 , sp 2 , and sp 1 , based on XPS and FTIR studies [22].…”