Aluminum Oxide Barrier Coatings on Polymer Films for Food Packaging Applications

Barrier coatings are used in applications including food packaging, dry goods, and consumer products to prevent transport of different compounds either through or into paper and paperboard substrates. These coatings are useful in packaging to contain active ingredients, such as fragrances, or to protect contents from detrimental substances, such as oxygen, water, grease, or other chemicals of concern. They also are used to prevent visual changes or mechanical degradation that might occur if the paper becomes saturated. The performance and underlying mechanism depends on the barrier coating type and, in particular, on whether the barrier coating is designed to prevent diffusive or capillary transport. Estimates on the basis of fundamental transport phenomena and data from a broad screening of different barrier materials can be used to understand the limits of various approaches to construct barrier coatings. These estimates also can be used to create basic design rules for general classes of barrier coatings.

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Caprolactone Ring-Opening Molecular Layer Deposition of Organic-Aluminum Oxide Polymer Films

ECS Journal of Solid State Science and Technology ◽

10.1149/2.023204jss ◽

2012 ◽

Vol 1 (4) ◽

pp. P210-P215 ◽

Cited By ~ 6

Author(s):

Bo Gong ◽

Gregory N. Parsons

Keyword(s):

Aluminum Oxide ◽

Polymer Films ◽

Ring Opening ◽

Molecular Layer ◽

Molecular Layer Deposition ◽

Layer Deposition

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Food Packaging Polymer Films as Aroma Vapor Barriers at Different Relative Humidities

Journal of Food Science ◽

10.1111/j.1365-2621.1994.tb14708.x ◽

1994 ◽

Vol 59 (6) ◽

pp. 1328-1331 ◽

Cited By ~ 27

Author(s):

F. JOHANSSON ◽

A. LEUFVEN

Keyword(s):

Polymer Films ◽

Food Packaging

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Adhesion and Stability of Nanocellulose Coatings on Flat Polymer Films and Textiles

10.20944/preprints202007.0213.v1 ◽

2020 ◽

Author(s):

Raha Saremi ◽

Nikolay Borodinov ◽

Amine Mohamed Laradji ◽

Suraj Sharma ◽

Igor Luzinov ◽

...

Keyword(s):

Polymer Films ◽

Food Packaging ◽

Mechanical Stability ◽

Polymer Coatings ◽

High Specific Surface Area ◽

Force Microscopy ◽

Polycarboxylic Acids ◽

Composition And Structure ◽

Filtration Properties ◽

Physical And Chemical

Renewable nanocellulose materials received increased attention owing to their small dimensions, high specific surface area, high mechanical characteristics, biocompatibility, and compostability. Nanocellulose coatings are among many interesting applications of these materials to functionalize different by composition and structure surfaces, including plastics, polymer coatings, and textiles with broader applications from food packaging to smart textiles. Variations in porosity and thickness of nanocellulose coatings are used to adjust a load of functional molecules and particles into the coatings, their permeability, and filtration properties. Mechanical stability of nanocellulose coatings in a wet and dry state are critical characteristics for many applications. In this work, nanofibrillated and nanocrystalline cellulose coatings deposited on the surface of polymer films and textiles made of cellulose, polyester, and nylon are studied using atomic force microscopy, ellipsometry, and T-peel adhesion tests. Methods to improve coatings adhesion and stability using physical and chemical cross-linking with added polymers and polycarboxylic acids are analyzed in this study. The paper reports on the effect of the substrate structure and ability of nanocellulose particles to intercalate into the substrate on the coating adhesion.

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Conducting tip atomic force microscopy analysis of aluminum oxide barrier defects decorated by electrodeposition

Applied Physics Letters ◽

10.1063/1.1415775 ◽

2001 ◽

Vol 79 (19) ◽

pp. 3158-3160 ◽

Cited By ~ 3

Author(s):

J. Carrey ◽

K. Bouzehouane ◽

J.-M. George ◽

C. Ceneray ◽

A. Fert ◽

...

Keyword(s):

Atomic Force Microscopy ◽

Aluminum Oxide ◽

Atomic Force Microscopy Analysis ◽

Force Microscopy ◽

Atomic Force ◽

Microscopy Analysis ◽

Oxide Barrier

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Enhanced Aluminum Properties by Means of Precise Droplet Deposition

Journal of Manufacturing Science and Engineering ◽

10.1115/1.1285914 ◽

1999 ◽

Vol 122 (3) ◽

pp. 484-493 ◽

Cited By ~ 60

Author(s):

Melissa Orme ◽

Robert F. Smith

Keyword(s):

Grain Size ◽

Aluminum Oxide ◽

Molten Aluminum ◽

Mechanical Analysis ◽

Droplet Deposition ◽

Average Grain Size ◽

Aluminum Droplets ◽

Integrated Operation ◽

Oxide Barrier ◽

Droplet Stream

The use of molten aluminum droplets is investigated for potential application to precision droplet-based net-form manufacturing (PDM). In the proposed application, final structural components are made from the raw stock in one integrated operation by depositing molten metal droplets, layer after layer, via computer information. This work investigates the feasibility of the proposed technology by investigating the issues associated with generating molten aluminum droplets from capillary stream break-up, and examining the mechanical characteristics of the fabricated aluminum components. New results are presented which illustrate the generation of stable streams of molten aluminum droplets at rates of 24,000 droplets/second for a droplet stream speed of 10.9 m/s, corresponding to throughput rates of 2.3×10−4 kg/s (1.85 lb./hour). The droplets travel 2,500 droplet diameters in an inert environment before impingement with the substrate. Microstructural images are completely devoid of splat boundaries, which have been removed by remelting, and the grain size is approximately uniform throughout the field of view of the image that, in most cases presented, contains easily upwards of 30 splats. Also, it has been found that the presence of aluminum oxide in the melt does not influence the average grain size of the component. An oxide barrier however will encapsulate each grain if the oxides are not removed by filtration in the pre-jetting stage. The presence of aluminum oxide in the melt does not prohibit the removal of the splat boundaries. Mechanical analysis shows that fabrication with molten aluminum droplet deposition results in a 30 percent increase in ultimate tensile strength compared to the raw ingot stock. [S1087-1357(00)02402-3]

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