Water vapor and oxygen-barrier performance of corn–zein coated polypropylene films

Tıhmınlıoğlu, Funda; Atik, İsa Doğan; Özen, Banu

doi:10.1016/j.jfoodeng.2009.08.018

Cited by 119 publications

(77 citation statements)

References 23 publications

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“…Transport properties of coated packaging materials are affected by coating composition (Tihminlioglu et al 2010). Therefore, the detailed study of the water-vaporbarrier properties of the HPMC-coated papers as influenced by coating composition is of great importance for practical and commercial purposes.…”

Section: Water Vapor Permeability (Wvp)mentioning

confidence: 99%

Physical and Mechanical Properties of Hydroxypropyl Methylcellulose–Coated Paper as Affected by Coating Weight and Coating Composition

Khwaldia

2013

BioRes

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Hydroxypropyl methylcellulose (HPMC)-coated papers without plasticizer and plasticized with polyols were prepared, and the effects of coating weight, different plasticizers (glycerol (GLY), sorbitol (SOR), and polyethylene glycol (PEG)), and plasticizer contents (20% to 50%) on the physical and mechanical properties of the resulting biopolymer-coated papers were studied. Coating weight was the most important factor affecting mechanical properties. Conversely, increasing coating weight led to a decrease in gloss and to an increase in tensile strength (TS), elongation at break (%E), and tearing resistance of coated papers. The application of unplasticized HPMC coatings (3 g/m 2 ) on paper reduced water vapor permeability (WVP) and water absorption capacity by 25% as compared with uncoated paper. All plasticizers significantly (p < 0.05) increased WVP and Cobb 60 values of the films. With the exception of PEG, no effect was found with plasticizers on TS and %E of coated papers compared with those without plasticizer. HPMC-coated papers with PEG as a plasticizer showed significantly lower TS and higher %E and tearing resistance than the other plasticized films (p < 0.05). HPMC coating improved tensile properties and tearing resistance of paper and could be regarded as a reinforcement layer.

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Section: Water Vapor Permeability (Wvp)mentioning

confidence: 99%

Physical and Mechanical Properties of Hydroxypropyl Methylcellulose–Coated Paper as Affected by Coating Weight and Coating Composition

Khwaldia

2013

BioRes

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“…The most common quality losses are associated with water vapor and oxygen transfer [1]. The research of barrier properties is very important from a technological point of view [2][3].…”

Section: Introductionmentioning

confidence: 99%

Barrier Properties of Coated and Laminated Polyolefin Films for Food Packaging

et al. 2010

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The food packaging industry demands polymer films possessing a defined barrier against permeation of gases, moisture and flavor. The objective of this study was to assess the differences between the barrier properties of coated and un-coated polyolefine films. Eight types of packaging films are prepared by standard industrial procedure by cast film extrusion processing with chill rollers: biaxially oriented polypropylene (BOPP), BOPP coated by acrylic copolymer, metallized BOPP by aluminum, and low-density polyethylene (LDPE). The influence of lamination and metallization on the gas molecules (CO2, O2 and N2) was determined by Lyssy's method. The moisture transparency was assessed according to the gravimetric method. The substantial differences between the barrier properties of the coated and un-coated films were estimated. It was estimated that the lamination process improves the oxygen barrier but not necessarily the moisture barrier, due to the different mechanisms for oxygen and moisture permeability. The obtained barrier properties data were considered from a practical point of view. It was concluded that films based on metallized BOPP has excellent barrier properties and can be used to over wrap food products.

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“…For example, Tihminlioglu et al (2010) investigated zeincoating polypropylene films and found significant improvements in WVP and oxygen barrier properties. However, zein has been found to be incompatible with natural polymers such as 28 starch and gelatin and synthetic polymers such as poly ε-caprolactone (reviewed by Sessa et al 2011).…”

Section: Blending With Synthetic Polymers or Other Natural Polymersmentioning

confidence: 99%

Developments in the Science of Zein, Kafirin, and Gluten Protein Bioplastic Materials

Anyango

Taylor

2013

Cereal Chem

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Despite much research, there are very few commercial prolamin bio-plastics. The major reason, apart from their high cost, is that they have inferior functional properties compared to synthetic polymer plastics. This is because the prolamins are complex, each consisting of several classes and sub-classes and the functional properties of their bio-plastics are greatly affected by water. Prolamin bio-plastics are produced by protein aggregation from a solvent or by thermoplastic processing. Recent research indicates that protein aggregation occurs by polypeptide self-assembly into nanostructures. Protein secondary structure in terms of α-helical and β-sheet structure seems to play a key, but incompletely understood role in assembly. Also, there is inadequate knowledge as to how these nanostructures further assemble and organize into the various forms of prolamin bio-plastics such as films, fibres, microparticles and scaffolds. Some improvements in bio-plastic functionality have been made by better prolamin solvation, plasticization, physical and chemical cross-linking, derivatization and blending with other polymers. The most promising area of 2 commercialization is the biomedical field where the relative hydrophilicity, compatibility and biodegradability of particularly zein and kafirin are advantageous. With regard to biomedical applications, "supramolecular design" of prolamin bio-plastics through control over interand intramolecular weak interactions and SS/SH interchange between and within polypeptides appears to have considerable potential.

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Water vapor and oxygen-barrier performance of corn–zein coated polypropylene films

Cited by 119 publications

References 23 publications

Physical and Mechanical Properties of Hydroxypropyl Methylcellulose–Coated Paper as Affected by Coating Weight and Coating Composition

Physical and Mechanical Properties of Hydroxypropyl Methylcellulose–Coated Paper as Affected by Coating Weight and Coating Composition

Barrier Properties of Coated and Laminated Polyolefin Films for Food Packaging

Developments in the Science of Zein, Kafirin, and Gluten Protein Bioplastic Materials

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