Development and characterization of PET/Fish Gelatin–nanoclay composite/LDPE laminate

Abstract

A three-layer laminate fi lm was developed with the following structure: polyethylene terephthalate (PET)/fi sh gelatin (FG)-nanoclay composite/low-density polyethylene (LDPE). The FG-nanoclay composite material functioned as the oxygen barrier layer and demonstrated comparable oxygen barrier properties when compared with a similar laminate utilizing ethylene vinyl alcohol as the barrier layer at a relative humidity (RH) of up to 50%. The introduction of nanometersized fi ller clay into the FG matrix lowered the oxygen permeability (OP) because of the tortuosity effect of the clay particles. In addition, the FG-nanoclay composite fi lm exhibited bond strengths similar to both LDPE and PET. The hydrophilic nature of FG signifi cantly increases OP under high (>50%) RH conditions. However, this new FG laminate fi lm could be a possible alternative for packaging designers desiring a more sustainable packaging material for low-RH (<50%) applications.

Biohybrid barrier films from fluidized pectin and nanoclay

“…Nanoclay delamination with the ultrasonic treatment was used for the reference purposes since this method is widely used for effective clay/water suspension preparation in a laboratory scale (Bae et al, 2009;Chen, Hao, Guo, Song, & Zhang, 2002;Shabeer, Chandrashekhara, & Schuman, 2007;Vaia, Jant, Kramer, & Giannelis, 1996). However, when considering larger scale preparation methods for hybrid materials and more even distribution of inorganic nanoparticles into a gel-like polymeric matrix, the sufficient homogeneity together with nanosized fine structure may not be achieved by ultrasonic treatment only.…”

“…Applications of nanotechnology include improved barrier, mechanical and antimicrobial properties, as well as the incorporation of nanosensors for traceability and the monitoring the condition of foodstuffs during transport and storage (Harrington, 2009). In recent years a lot of effort has been aimed at developing new biobased polymer containing films and nanocomposites which can act as barrier materials in packaging applications (Arora & Padua, 2010;Bae, Park, Darby, Kimmel, & Whiteside, 2009;Lagarón & Fendler, 2009;Maksimov, Lagzdins, Lilichenko, & Plume, 2009;Mangiacapra, Gorrasi, Sorrentino, & Vittoria, 2006;Napierała & Nowotarska, 2006;Plackett et al, 2006;Vartiainen et al, 2010).…”

“…The gas permeability of polysaccharide materials may increase manifold when humidity increases (Hansen & Plackett, 2008). Since most of the food applications demand materials that are resistant to moisture as well, the major challenge is to overcome the inherent hydrophilic behaviour of these biomaterials (Bae et al, 2009).…”

Improving the Barrier Properties of Poly(Lactic Acid) by Blending with Poly(Ethylene-Co-Vinyl Alcohol)

“…The barrier properties to water and oxygen of laminates can be significantly improved. [10] However, the application of this technology in food packaging is still stringently restricted owing to high cost and complicated processing. Moreover, the laminates are generally not available for products with complicated shapes.…”

Properties of low methoxyl pectin‐carboxymethyl cellulose based on montmorillonite nanocomposite films

“…Edible and biodegradable films have been studied for at least 25 years (Guilbert, 1986;Donhowe & Fennema, 1994) and have recently received an increasing amount of research attention (Bae et al, 2009). They have the advantage of being biodegradable, renewable and often edible and are obtained from natural raw materials such as polysaccharide and protein, chemical synthesis of bio-derived monomers or polymers naturally produced by microorganisms (Yoo & Krochta, 2012;Wihodo & Moraru, 2013).…”